Domain registration APIs

Q: Which domain API can I start using today with no contract and no deposit?

- Porkbun, NameSilo, Name.com, Dynadot, Internet.bs and Gandi issue a key from a normal account at zero cost - Route 53 and Vercel need only an existing AWS or Vercel account - Namecheap issues a free sandbox key but gates production behind US$50 or twenty domains - GoDaddy now requires ten domains under management or a paid Discount Domain Club membership

Q: Can I register a .com.au domain through an API?

- Yes, but the list is short - Synergy Wholesale is strongest, modelling the auDA eligibility fields (ABN or ACN, registrant ID type, eligibility reason) in the call - OpenSRS carries them too; Route 53 accepts .com.au with eligibility data on the contact - Porkbun, Namecheap and Vercel do not sell .au at all

Q: Do I need to be an ICANN-accredited registrar to register domains from code?

- No - Every provider here is accredited itself or resells someone who is, and the API is the point of that - Self-accreditation costs US$3,500 to apply plus US$4,000 a year, before registry deposits, insurance and an EPP client - Only worth it above roughly a hundred thousand names under management

Q: Which registrar APIs have a real sandbox?

- Namecheap runs a sandbox host, GoDaddy an OTE environment, Name.com a development host - Gandi, OpenSRS and Hexonet all run proper OT&E systems with free, fake registrations - Route 53, Vercel Domains, Porkbun and Synergy Wholesale have none - Against those, test with a cheap TLD and delete inside the grace window

Q: How do I retrieve a domain's EPP or auth code through an API?

- Name.com, Route 53, Hexonet, OpenSRS, Internet.bs and Synergy Wholesale return the code to an API call - NameSilo has a retrieval endpoint but emails the code to the admin contact - Namecheap, Porkbun, GoDaddy and Vercel expect a human in a dashboard or inbox - Treat this as blocking if you hand domains back to customers

Q: Do these APIs expose renewal prices, or only registration prices?

- Wholesale platforms expose renewal separately: OpenSRS, Hexonet, Synergy Wholesale and Netim return per-TLD registration, renewal and transfer at your tier - Porkbun's pricing endpoint is public and unauthenticated - NameSilo, Name.com, Namecheap, Gandi and Route 53 all return renewal figures - GoDaddy and Vercel are the notable gaps

Q: What rate limits should I expect on availability checks?

- Assume they are the binding constraint - Namecheap documents roughly twenty calls a minute, 700 an hour and 8,000 a day - Porkbun throttles domain checks to about one every ten seconds; Route 53 throttles too hard to sweep a list - Only GoDaddy, Hexonet and Name.com make bulk or streaming search practical

Porkbun, Name.com and NameSilo hand you a working key for free, while wholesale platforms and higher-priced Route 53 and Vercel demand contracts or deposits first.

Providers: 15
Fields compared: 26
Source confidence: 31%
Last verified: 2026-07-23 (2mo ago)
Re-verified: every 30 days

Data confidence0% of 364 figures verified in the last 30d

57sourced of 36457stale, oldest 2mo ago

All comparisons

Comparison	Tools	Verified
Sandbox providers	20	2026-07-23
Coding agents	17	2026-01-15
LLM APIs	18	2026-07-30
Browser APIs	13	2026-07-01
S3-compatible storage	12	2026-07-23
Vercel alternatives	13	2026-06-15
Convex alternatives	11	2026-07-20
Email APIs	13	2026-06-05
Database engines	5	2026-07-01
Domain registrars	15	2026-06-30
Domain APIs	15	2026-07-23
AU SMS APIs	13	2026-07-20

Providers

15 compared

HexonetRegistering unusual ccTLDs through one integration

80.4score

GandiEuropean teams wanting an EU-based registrar with a modern API

77.8score

Name.comProducts with a domain search box in the onboarding flow

76.7score

NetimPortfolios needing ccTLDs with local-presence requirements

75.4score

OpenSRSHosting platforms reselling domains at volume

74.1score

Internet.bsEvaluating a registrar API before creating an account

72.9score

NameSiloRegistering on behalf of customers without a reseller contract

72.2score

AWS Route 53 DomainsDomains that belong to infrastructure and should be governed by IAM

71.4score

DynadotBulk registration and portfolio automation

68.7score

Synergy WholesaleAustralian platforms registering .com.au for customers

65.2score

GoDaddyAccounts already holding ten or more domains

64.7score

Direct EPP (own accreditation)Operators already carrying six figures of domains under management

63.3score

NamecheapTeams that must test registration flows against a real sandbox

56.5score

Vercel DomainsOnboarding flows that end with a live site on a custom domain

51.0score

PorkbunAutomating DNS records for domains you bought by hand

48.1score

Differences only

15 tools · verified 2mo ago

Domain registration APIs, 15 tools compared across 26 of 26 fields.
Tool	Weighted
		w10	w8	w7	w6	w4	w5	w6	w7	w9	w6	w4	w6	w6	w7	w5	w5	w6	w4	w5	w7	w8	w7	w3	w4	w1
HexonetWholesale platform with 1,000+ TLDs, bulk checks and a free OT&E on signup	80.4	$0 up front	Yes	Yes	·	Yes	user-password	1,000 TLDs	Yes	Yes	Yes	Partial	Yes	Yes	Yes	Yes	Partial	reusable-handles	paid-addon	·	wholesale	Yes	$11.3/yr	No	Partial	1999	High-coverage wholesale platform within Team Internet, aimed at resellers and registries.
GandiEuropean registrar with huge TLD breadth and post-2023 premium pricing.	77.8	$0 up front	Yes	No	$0 float	Yes	bearer-token	750 TLDs	Partial	Yes	Partial	Partial	Yes	Yes	Yes	Yes	No	reusable-handles	free-and-default	·	retail	Yes	$24/yr	No	Partial	2007	European registrar with a genuinely modern REST API and premium pricing to match.
Name.comClean REST API with streaming search, a dev environment and auth-code retrieval	76.7	$0 up front	Yes	No	$0 float	Yes	basic-auth	500 TLDs	Unknown	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	inline-per-order	paid-addon	·	retail	Yes	$14.99/yr	No	Partial	2015	Developer-facing retail registrar; the API is treated as a product, not a support burden.
NetimFrench registrar with unusually deep ccTLD coverage and corporate controls.	75.4	–	Unknown	Partial	·	Yes	api-key	1,000 TLDs	Partial	Yes	Yes	Unknown	Yes	Yes	Yes	Yes	No	reusable-handles	paid-addon	·	wholesale-tiered	Yes	$12/yr	No	Partial	2010	French registrar selling breadth of extensions, including ccTLDs needing local presence.
OpenSRSTucows' wholesale platform, deep API, real OT&E, signed contract required	74.1	$500 up front	Yes	Yes	–	Yes	api-key-ip-allowlist	800 TLDs	Yes	Yes	Partial	Yes	Yes	Yes	Yes	Yes	Partial	reusable-handles	paid-addon	·	wholesale-tiered	Yes	$11.5/yr	No	No	1999	The incumbent wholesale platform for hosts and platforms reselling domains at scale.
Internet.bsOld-school reseller API with published test credentials and no onboarding gate	72.9	$0 up front	Yes	No	$0 float	Yes	api-key	400 TLDs	Unknown	Yes	Partial	No	Yes	Yes	Yes	Yes	No	inline-per-order	free-and-default	·	retail	Unknown	$12.5/yr	No	No	2008	Long-running reseller-oriented registrar with an open, evaluate-before-you-sign API.
NameSiloFlat renewals, free privacy and portfolio tooling for people holding hundreds.	72.2	$0 up front	Yes	No	$0 float	Yes	api-key	500 TLDs	No	Yes	Yes	No	Yes	Yes	Partial	Yes	No	reusable-handles	free-and-default	·	retail	Yes	$13.95/yr	No	No	2012	Low-margin retail registrar that treats API access and free privacy as table stakes.
AWS Route 53 DomainsSigV4 domain registration inside AWS, with no sandbox and hard throttling	71.4	$0 up front	No	No	$0 float	Partial	sigv4	180 TLDs	Partial	Yes	No	Yes	Yes	Yes	Yes	Yes	Partial	inline-per-order	free-toggle-api	–	retail	Yes	$13/yr	Partial	Yes	2014	Domain registration as an AWS service, IAM, CloudTrail and one bill, not a registrar product.
DynadotDomainer-oriented registrar with strong bulk tools and a built-in marketplace.	68.7	$0 up front	No	No	–	Yes	api-key	550 TLDs	Unknown	Yes	Yes	No	Yes	Partial	Yes	Yes	No	reusable-handles	free-toggle-api	·	retail	Yes	$12.99/yr	No	No	2008	Value registrar with a long-lived, unglamorous API aimed at bulk domain investors.
Synergy WholesaleAustralian wholesale registrar, near-cost .au if you can open an account.	65.2	$0 up front	No	Yes	–	Partial	api-key-ip-allowlist	300 TLDs	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	No	inline-per-order	paid-addon	·	wholesale	Yes	$11/yr	No	No	2011	Australian wholesale provider for hosts and agencies reselling .au and hosting together.
GoDaddyThe default registrar for people who have never compared registrars.	64.7	$30 up front	Yes	Partial	$0 float	Yes	api-key	400 TLDs	Partial	Yes	Yes	Yes	Yes	Yes	No	Yes	No	inline-per-order	paid-addon	60 req/min	retail-premium	Partial	$21.99/yr	No	Yes	2015	Mass-market registrar whose API is now positioned as a benefit for larger customers.
Direct EPP (own accreditation)baseline · Become the registrar: ICANN accreditation plus an EPP client per registry	63.3	$7,500 up front	Yes	No	–	Yes	epp-xml	–	Yes	Yes	Partial	No	Yes	No	Yes	Yes	Partial	reusable-handles	not-in-api	600 req/min	wholesale	No	$10.98/yr	No	No	2004	The reference point: registry cost with no margin, in exchange for becoming a regulated party.
NamecheapThe mainstream cheap registrar: heavy first-year discounts, higher renewals.	56.5	$50 up front	Yes	No	$50 float	Yes	api-key-ip-allowlist	400 TLDs	No	Yes	Yes	No	Yes	Partial	No	Partial	No	inline-per-order	free-toggle-api	20 req/min	retail	Yes	$15.98/yr	No	No	2008	Retail registrar with a long-standing reseller-flavoured API and a hard IP allowlist.
Vercel DomainsBuy a domain with the token that runs your deploys, narrow list, high prices	51.0	$0 up front	No	No	$0 float	No	bearer-token	50 TLDs	No	Yes	No	No	Partial	Yes	No	Partial	Partial	account-default	free-and-default	·	retail-premium	Partial	$20/yr	Yes	Yes	2018	Domain purchase as a convenience inside a deployment platform, not a registrar business.
PorkbunNear-cost pricing with free privacy, SSL and forwarding, and a clean exit.	48.1	$0 up front	No	No	$0 float	Yes	api-key	500 TLDs	No	Unknown	No	No	No	Yes	No	No	No	account-default	free-and-default	6 req/min	retail	Yes	$11.06/yr	No	No	2019	Cheap retail registrar whose API exists mainly so developers can automate DNS.

HexonetWholesale platform with 1,000+ TLDs, bulk checks and a free OT&E on signup80.4

Access & onboarding

Spend to first call ( up front): $0 up front
Sandbox / OTE: Yes
Reseller contract: Yes
Min prepaid balance ( float): ·
ICANN accredited: Yes
API auth: user-password

API surface

TLDs offered ( TLDs): 1,000 TLDs
.au support: Yes
Register endpoint: Yes
Bulk availability: Yes
Suggestion API: Partial
Transfer in/out: Yes
DNS record API: Yes
EPP code via API: Yes
Auto-renew control: Yes
Webhooks / events: Partial
Contact model: reusable-handles
Privacy via API: paid-addon
Rate limit ( req/min): ·

Pricing

Pricing basis: wholesale
Renewal price in API: Yes
.com renewal (/yr): $11.3/yr

Agentic

MCP server: No
Machine-readable spec: Partial

Traction

API since: 1999

Positioning

Positioning: High-coverage wholesale platform within Team Internet, aimed at resellers and registries.

GandiEuropean registrar with huge TLD breadth and post-2023 premium pricing.77.8

Access & onboarding

Spend to first call ( up front): $0 up front
Sandbox / OTE: Yes
Reseller contract: No
Min prepaid balance ( float): $0 float
ICANN accredited: Yes
API auth: bearer-token

API surface

TLDs offered ( TLDs): 750 TLDs
.au support: Partial
Register endpoint: Yes
Bulk availability: Partial
Suggestion API: Partial
Transfer in/out: Yes
DNS record API: Yes
EPP code via API: Yes
Auto-renew control: Yes
Webhooks / events: No
Contact model: reusable-handles
Privacy via API: free-and-default
Rate limit ( req/min): ·

Pricing

Pricing basis: retail
Renewal price in API: Yes
.com renewal (/yr): $24/yr

Agentic

MCP server: No
Machine-readable spec: Partial

Traction

API since: 2007

Positioning

Positioning: European registrar with a genuinely modern REST API and premium pricing to match.

Name.comClean REST API with streaming search, a dev environment and auth-code retrieval76.7

Access & onboarding

Spend to first call ( up front): $0 up front
Sandbox / OTE: Yes
Reseller contract: No
Min prepaid balance ( float): $0 float
ICANN accredited: Yes
API auth: basic-auth

API surface

TLDs offered ( TLDs): 500 TLDs
.au support: Unknown
Register endpoint: Yes
Bulk availability: Yes
Suggestion API: Yes
Transfer in/out: Yes
DNS record API: Yes
EPP code via API: Yes
Auto-renew control: Yes
Webhooks / events: No
Contact model: inline-per-order
Privacy via API: paid-addon
Rate limit ( req/min): ·

Pricing

Pricing basis: retail
Renewal price in API: Yes
.com renewal (/yr): $14.99/yr

Agentic

MCP server: No
Machine-readable spec: Partial

Traction

API since: 2015

Positioning

Positioning: Developer-facing retail registrar; the API is treated as a product, not a support burden.

NetimFrench registrar with unusually deep ccTLD coverage and corporate controls.75.4

Access & onboarding

Spend to first call ( up front): –
Sandbox / OTE: Unknown
Reseller contract: Partial
Min prepaid balance ( float): ·
ICANN accredited: Yes
API auth: api-key

API surface

TLDs offered ( TLDs): 1,000 TLDs
.au support: Partial
Register endpoint: Yes
Bulk availability: Yes
Suggestion API: Unknown
Transfer in/out: Yes
DNS record API: Yes
EPP code via API: Yes
Auto-renew control: Yes
Webhooks / events: No
Contact model: reusable-handles
Privacy via API: paid-addon
Rate limit ( req/min): ·

Pricing

Pricing basis: wholesale-tiered
Renewal price in API: Yes
.com renewal (/yr): $12/yr

Agentic

MCP server: No
Machine-readable spec: Partial

Traction

API since: 2010

Positioning

Positioning: French registrar selling breadth of extensions, including ccTLDs needing local presence.

OpenSRSTucows' wholesale platform, deep API, real OT&E, signed contract required74.1

Access & onboarding

Spend to first call ( up front): $500 up front
Sandbox / OTE: Yes
Reseller contract: Yes
Min prepaid balance ( float): –
ICANN accredited: Yes
API auth: api-key-ip-allowlist

API surface

TLDs offered ( TLDs): 800 TLDs
.au support: Yes
Register endpoint: Yes
Bulk availability: Partial
Suggestion API: Yes
Transfer in/out: Yes
DNS record API: Yes
EPP code via API: Yes
Auto-renew control: Yes
Webhooks / events: Partial
Contact model: reusable-handles
Privacy via API: paid-addon
Rate limit ( req/min): ·

Pricing

Pricing basis: wholesale-tiered
Renewal price in API: Yes
.com renewal (/yr): $11.5/yr

Agentic

MCP server: No
Machine-readable spec: No

Traction

API since: 1999

Positioning

Positioning: The incumbent wholesale platform for hosts and platforms reselling domains at scale.

Internet.bsOld-school reseller API with published test credentials and no onboarding gate72.9

Access & onboarding

Spend to first call ( up front): $0 up front
Sandbox / OTE: Yes
Reseller contract: No
Min prepaid balance ( float): $0 float
ICANN accredited: Yes
API auth: api-key

API surface

TLDs offered ( TLDs): 400 TLDs
.au support: Unknown
Register endpoint: Yes
Bulk availability: Partial
Suggestion API: No
Transfer in/out: Yes
DNS record API: Yes
EPP code via API: Yes
Auto-renew control: Yes
Webhooks / events: No
Contact model: inline-per-order
Privacy via API: free-and-default
Rate limit ( req/min): ·

Pricing

Pricing basis: retail
Renewal price in API: Unknown
.com renewal (/yr): $12.5/yr

Agentic

MCP server: No
Machine-readable spec: No

Traction

API since: 2008

Positioning

Positioning: Long-running reseller-oriented registrar with an open, evaluate-before-you-sign API.

NameSiloFlat renewals, free privacy and portfolio tooling for people holding hundreds.72.2

Access & onboarding

Spend to first call ( up front): $0 up front
Sandbox / OTE: Yes
Reseller contract: No
Min prepaid balance ( float): $0 float
ICANN accredited: Yes
API auth: api-key

API surface

TLDs offered ( TLDs): 500 TLDs
.au support: No
Register endpoint: Yes
Bulk availability: Yes
Suggestion API: No
Transfer in/out: Yes
DNS record API: Yes
EPP code via API: Partial
Auto-renew control: Yes
Webhooks / events: No
Contact model: reusable-handles
Privacy via API: free-and-default
Rate limit ( req/min): ·

Pricing

Pricing basis: retail
Renewal price in API: Yes
.com renewal (/yr): $13.95/yr

Agentic

MCP server: No
Machine-readable spec: No

Traction

API since: 2012

Positioning

Positioning: Low-margin retail registrar that treats API access and free privacy as table stakes.

AWS Route 53 DomainsSigV4 domain registration inside AWS, with no sandbox and hard throttling71.4

Access & onboarding

Spend to first call ( up front): $0 up front
Sandbox / OTE: No
Reseller contract: No
Min prepaid balance ( float): $0 float
ICANN accredited: Partial
API auth: sigv4

API surface

TLDs offered ( TLDs): 180 TLDs
.au support: Partial
Register endpoint: Yes
Bulk availability: No
Suggestion API: Yes
Transfer in/out: Yes
DNS record API: Yes
EPP code via API: Yes
Auto-renew control: Yes
Webhooks / events: Partial
Contact model: inline-per-order
Privacy via API: free-toggle-api
Rate limit ( req/min): –

Pricing

Pricing basis: retail
Renewal price in API: Yes
.com renewal (/yr): $13/yr

Agentic

MCP server: Partial
Machine-readable spec: Yes

Traction

API since: 2014

Positioning

Positioning: Domain registration as an AWS service, IAM, CloudTrail and one bill, not a registrar product.

DynadotDomainer-oriented registrar with strong bulk tools and a built-in marketplace.68.7

Access & onboarding

Spend to first call ( up front): $0 up front
Sandbox / OTE: No
Reseller contract: No
Min prepaid balance ( float): –
ICANN accredited: Yes
API auth: api-key

API surface

TLDs offered ( TLDs): 550 TLDs
.au support: Unknown
Register endpoint: Yes
Bulk availability: Yes
Suggestion API: No
Transfer in/out: Yes
DNS record API: Partial
EPP code via API: Yes
Auto-renew control: Yes
Webhooks / events: No
Contact model: reusable-handles
Privacy via API: free-toggle-api
Rate limit ( req/min): ·

Pricing

Pricing basis: retail
Renewal price in API: Yes
.com renewal (/yr): $12.99/yr

Agentic

MCP server: No
Machine-readable spec: No

Traction

API since: 2008

Positioning

Positioning: Value registrar with a long-lived, unglamorous API aimed at bulk domain investors.

Synergy WholesaleAustralian wholesale registrar, near-cost .au if you can open an account.65.2

Access & onboarding

Spend to first call ( up front): $0 up front
Sandbox / OTE: No
Reseller contract: Yes
Min prepaid balance ( float): –
ICANN accredited: Partial
API auth: api-key-ip-allowlist

API surface

TLDs offered ( TLDs): 300 TLDs
.au support: Yes
Register endpoint: Yes
Bulk availability: Yes
Suggestion API: No
Transfer in/out: Yes
DNS record API: Yes
EPP code via API: Yes
Auto-renew control: Yes
Webhooks / events: No
Contact model: inline-per-order
Privacy via API: paid-addon
Rate limit ( req/min): ·

Pricing

Pricing basis: wholesale
Renewal price in API: Yes
.com renewal (/yr): $11/yr

Agentic

MCP server: No
Machine-readable spec: No

Traction

API since: 2011

Positioning

Positioning: Australian wholesale provider for hosts and agencies reselling .au and hosting together.

GoDaddyThe default registrar for people who have never compared registrars.64.7

Access & onboarding

Spend to first call ( up front): $30 up front
Sandbox / OTE: Yes
Reseller contract: Partial
Min prepaid balance ( float): $0 float
ICANN accredited: Yes
API auth: api-key

API surface

TLDs offered ( TLDs): 400 TLDs
.au support: Partial
Register endpoint: Yes
Bulk availability: Yes
Suggestion API: Yes
Transfer in/out: Yes
DNS record API: Yes
EPP code via API: No
Auto-renew control: Yes
Webhooks / events: No
Contact model: inline-per-order
Privacy via API: paid-addon
Rate limit ( req/min): 60 req/min

Pricing

Pricing basis: retail-premium
Renewal price in API: Partial
.com renewal (/yr): $21.99/yr

Agentic

MCP server: No
Machine-readable spec: Yes

Traction

API since: 2015

Positioning

Positioning: Mass-market registrar whose API is now positioned as a benefit for larger customers.

Direct EPP (own accreditation)Become the registrar: ICANN accreditation plus an EPP client per registry63.3

Access & onboarding

Spend to first call ( up front): $7,500 up front
Sandbox / OTE: Yes
Reseller contract: No
Min prepaid balance ( float): –
ICANN accredited: Yes
API auth: epp-xml

API surface

TLDs offered ( TLDs): –
.au support: Yes
Register endpoint: Yes
Bulk availability: Partial
Suggestion API: No
Transfer in/out: Yes
DNS record API: No
EPP code via API: Yes
Auto-renew control: Yes
Webhooks / events: Partial
Contact model: reusable-handles
Privacy via API: not-in-api
Rate limit ( req/min): 600 req/min

Pricing

Pricing basis: wholesale
Renewal price in API: No
.com renewal (/yr): $10.98/yr

Agentic

MCP server: No
Machine-readable spec: No

Traction

API since: 2004

Positioning

Positioning: The reference point: registry cost with no margin, in exchange for becoming a regulated party.

NamecheapThe mainstream cheap registrar: heavy first-year discounts, higher renewals.56.5

Access & onboarding

Spend to first call ( up front): $50 up front
Sandbox / OTE: Yes
Reseller contract: No
Min prepaid balance ( float): $50 float
ICANN accredited: Yes
API auth: api-key-ip-allowlist

API surface

TLDs offered ( TLDs): 400 TLDs
.au support: No
Register endpoint: Yes
Bulk availability: Yes
Suggestion API: No
Transfer in/out: Yes
DNS record API: Partial
EPP code via API: No
Auto-renew control: Partial
Webhooks / events: No
Contact model: inline-per-order
Privacy via API: free-toggle-api
Rate limit ( req/min): 20 req/min

Pricing

Pricing basis: retail
Renewal price in API: Yes
.com renewal (/yr): $15.98/yr

Agentic

MCP server: No
Machine-readable spec: No

Traction

API since: 2008

Positioning

Positioning: Retail registrar with a long-standing reseller-flavoured API and a hard IP allowlist.

Vercel DomainsBuy a domain with the token that runs your deploys, narrow list, high prices51.0

Access & onboarding

Spend to first call ( up front): $0 up front
Sandbox / OTE: No
Reseller contract: No
Min prepaid balance ( float): $0 float
ICANN accredited: No
API auth: bearer-token

API surface

TLDs offered ( TLDs): 50 TLDs
.au support: No
Register endpoint: Yes
Bulk availability: No
Suggestion API: No
Transfer in/out: Partial
DNS record API: Yes
EPP code via API: No
Auto-renew control: Partial
Webhooks / events: Partial
Contact model: account-default
Privacy via API: free-and-default
Rate limit ( req/min): ·

Pricing

Pricing basis: retail-premium
Renewal price in API: Partial
.com renewal (/yr): $20/yr

Agentic

MCP server: Yes
Machine-readable spec: Yes

Traction

API since: 2018

Positioning

Positioning: Domain purchase as a convenience inside a deployment platform, not a registrar business.

PorkbunNear-cost pricing with free privacy, SSL and forwarding, and a clean exit.48.1

Access & onboarding

Spend to first call ( up front): $0 up front
Sandbox / OTE: No
Reseller contract: No
Min prepaid balance ( float): $0 float
ICANN accredited: Yes
API auth: api-key

API surface

TLDs offered ( TLDs): 500 TLDs
.au support: No
Register endpoint: Unknown
Bulk availability: No
Suggestion API: No
Transfer in/out: No
DNS record API: Yes
EPP code via API: No
Auto-renew control: No
Webhooks / events: No
Contact model: account-default
Privacy via API: free-and-default
Rate limit ( req/min): 6 req/min

Pricing

Pricing basis: retail
Renewal price in API: Yes
.com renewal (/yr): $11.06/yr

Agentic

MCP server: No
Machine-readable spec: No

Traction

API since: 2019

Positioning

Positioning: Cheap retail registrar whose API exists mainly so developers can automate DNS.

yespartialnounknown

Sources shown beside each value · Learn how sourcing works

measured vendor-claimed community inferredExpand any row for the source, verification date, and caveat behind every cell.

Domain registration APIs compared pricing, compared line by line

Where each one wins

Hexonet

80.4

Registering unusual ccTLDs through one integration
Evaluating a wholesale platform before signing anything
Teams that want official SDKs rather than hand-rolled clients

The widest TLD coverage and lowest-friction way into wholesale, via an idiosyncratic command-and-parameter API.

Gandi

77.8

European teams wanting an EU-based registrar with a modern API
Zone-heavy workloads that benefit from LiveDNS
Small portfolios where per-name price is not the deciding factor

The nicest European REST surface, but 2023 price rises put .com renewals near the top of this table.

Name.com

76.7

Products with a domain search box in the onboarding flow
Teams needing auth-code retrieval without a reseller contract
Prototyping before committing to a wholesale platform

The best free-tier developer experience here, paid for in retail pricing once domains become the margin.

Netim

75.4

Portfolios needing ccTLDs with local-presence requirements
European teams wanting one contract across many registries
Trustee-backed registrations you would otherwise handle manually

Chosen for reach and trustee-backed ccTLDs, not developer experience; documentation and transparency lag the wholesale majors.

OpenSRS

74.1

Hosting platforms reselling domains at volume
Products needing .com.au alongside broad international coverage
Teams that must test transfers and renewals before launch

The serious choice when domains are your product, despite a dated XML surface and an opaque opening deposit.

Internet.bs

72.9

Evaluating a registrar API before creating an account
Auth-code retrieval without a reseller contract
Free privacy on a prepaid, no-minimum account

Published test credentials let you evaluate in minutes, but everything else about the platform feels its age.

NameSilo

72.2

Registering on behalf of customers without a reseller contract
Cost-sensitive bulk portfolios
Teams that want free WHOIS privacy applied automatically

The most complete no-contract API here, held back by a query-string key and email-only auth codes.

AWS Route 53 Domains

71.4

Domains that belong to infrastructure and should be governed by IAM
Teams needing auth-code retrieval and audit logs in one place
Small numbers of registrations where throttling never bites

Worth it only for domains inside IAM and your AWS bill; wrong for a customer-facing search box.

Dynadot

68.7

Bulk registration and portfolio automation
Teams that want a hard spending ceiling via prepaid credit
Scripts where a query-string API is a feature, not a flaw

Built for domainers: strong bulk and contact handling, weak DNS granularity, no sandbox, keen prepaid pricing.

Synergy Wholesale

65.2

Australian platforms registering .com.au for customers
Agencies bundling AU domains, DNS and hosting
Anyone needing eligibility fields inside the registration call

The answer for .com.au or direct .au from code with an ABN; the missing test environment is the real cost.

GoDaddy

64.7

Accounts already holding ten or more domains
High-volume availability search and name suggestions
Teams that want a generated client from a published schema

Technically strong surface undermined by the least trustworthy access policy here and the worst pricing.

Direct EPP (own accreditation)

63.3

Operators already carrying six figures of domains under management
Registries and large hosts building their own registrar
Understanding what the margin above actually pays for

A reference point, not a recommendation; below roughly a hundred thousand names the compliance load outweighs every reseller margin.

Namecheap

56.5

Teams that must test registration flows against a real sandbox
Workloads with a stable egress IP or NAT gateway
Bulk availability search at moderate volume

Good sandbox and docs, but whole-zone DNS, no auth-code retrieval and a mandatory IP allowlist hurt.

Vercel Domains

51.0

Onboarding flows that end with a live site on a custom domain
Agent-driven workflows already holding a Vercel token
Teams that value one bill over per-name price

Buying a domain in the deploy flow is a real advantage, offset by a narrow catalogue and premium pricing.

Porkbun

48.1

Automating DNS records for domains you bought by hand
A free, unauthenticated source of TLD pricing data
Small projects where one registration a month can be manual

Superb free pricing and DNS API, but verify a registration endpoint exists before building a signup flow.

Which registrar has the best API for registering domains programmatically?

The category splits in two, contractually rather than technically
Retail registrars (Porkbun, NameSilo, Name.com, Dynadot, Namecheap, Internet.bs) bolt an API onto a consumer account
Sign up, toggle, get a key, call the registration endpoint the same afternoon
Wholesale platforms (OpenSRS, Hexonet, Synergy Wholesale, Netim) need an application, agreement and funded balance first
Wholesale APIs are markedly better: reusable contact handles, per-TLD per-tier pricing, event queues, inline auth codes
You pay for that in onboarding weeks
The .au question decides this page for many Australian teams
Registering .com.au or direct .au needs auDA accreditation plus eligibility data (ABN or ACN, registrant ID type, declared connection)
Synergy Wholesale models it all properly, the default if AU-based with an ABN
Tucows' OpenSRS is the credible international alternative
GoDaddy sells .au retail but its documented Domains API schema omits the eligibility fields
Porkbun, Namecheap and Vercel do not sell .au at all
Register one AU name by hand through a provider's API before designing around it
Sandboxes are scarcer than the marketing suggests
Namecheap, GoDaddy, Name.com, Gandi, OpenSRS and Hexonet run genuine, free test environments
Route 53, Vercel, Porkbun and Synergy Wholesale do not; every test is a real registration
Only a registry grace period saves you if you notice fast
Budget roughly a hundred dollars of throwaway names without an OTE
For most signup flows, use Name.com or NameSilo: free key, availability and pricing endpoints, retrievable auth codes
Both support registering on someone else's behalf
If domains are the product, go wholesale; margin and the pricing API repay the contract within a few hundred registrations
Use Route 53 only when the domains are yours, few, and everything lives in AWS
Use Vercel Domains only when the point is a customer never leaving onboarding

The gate is the contract, not the code

Every one of these APIs is an afternoon's work
Reading docs, writing a client, handling the create-and-poll dance for async registrations, none of it is hard
Half the providers ship an SDK; what takes weeks is being allowed to call it in production
The retail tier gates on money already spent
Namecheap wants US$50 in the account, or twenty domains, before flipping production access on
Cheap, but it catches teams that built against the sandbox then watched identical code fail live
GoDaddy's mid-2024 change was sharper: ten domains or a paid Discount Domain Club membership
Applied to long-open endpoints, it killed many small integrations overnight
The wholesale tier gates on a signature
OpenSRS, Hexonet and Synergy Wholesale want an application, a countersigned reseller agreement, and a funded prepaid balance
None publish the opening deposit; sales quotes it, it varies by market, routinely three or four figures
Synergy's real barrier is an ABN rather than a cheque; Australian businesses are often approved same-day
Budget calendar time, and start the paperwork on day one, not the week before launch

Testing without burning money

A registration is irreversible in a way most API calls are not
No DELETE gives your money back, only a registry grace period some providers honour and some quietly do not
Where an OT&E exists, use it properly
Namecheap, GoDaddy, Name.com, Gandi, OpenSRS and Hexonet let you register nonsense against a fake registry
OpenSRS and Hexonet also let you exercise transfers and renewals, where the real bugs live
Sandbox pricing usually does not mirror production, so never assert on prices from a test host
Where no OT&E exists (Route 53, Vercel, Porkbun, Synergy Wholesale), your test plan is real money
Register short-lived names in the cheapest TLD, in a dedicated account, and confirm the grace window first
Test failure paths deliberately: an unavailable name, a rejected contact, a registry timeout leaving the operation pending
Those are the 3am branches, and exactly what an OT&E reproduces well

Availability search is the part that does not scale

Almost every integration starts as a search box and hits a rate limit before a product decision
The registration endpoint is called rarely; availability is called on every keystroke unless you stop it
The spread is enormous
GoDaddy accepts arrays of names in one availability POST and ships a separate suggestion endpoint
Name.com streams search results, genuinely the nicest developer experience here
Hexonet and OpenSRS both do bulk checks with premium and suggestion data attached
Porkbun allows roughly one check every ten seconds
Route 53 checks one name per call and throttles the caller aggressively
Vercel exposes a single-name status endpoint with nothing bulk behind it
The usual fix is to stop asking the registrar
Keep a local zone-file or RDAP-backed first pass for obvious rejections, cache negatives briefly, spend a call only near commitment
That decouples you from the provider: availability logic is what you keep when you switch registrars for price

This page is about the API, not the shopfront

Everything ranked above is measured through the developer surface: endpoints, auth, sandboxes, rate limits, wholesale cost, contract terms
Nothing here reflects the control panel, the checkout, or what one name costs a person buying by hand
Those are different questions with different winners
A provider scoring badly here can be a perfectly good place to park your own domains
Just buying a domain by hand? → /compare/domain-registrars

What is domain registration apis compared?

Domain registration APIs compared: On toolweight, Domain registration APIs compared means the 15 tools benchmarked on this page, Porkbun, Namecheap, Name.com, Dynadot, GoDaddy, NameSilo, OpenSRS, Hexonet, Internet.bs, Gandi, AWS Route 53 Domains, Vercel Domains, Synergy Wholesale, Netim, Direct EPP (own accreditation), judged on the same 26 fields, from the same sources, on the same date. The question it exists to answer: Which registrar has the best API for registering domains programmatically?

How does toolweight compare these?

Every cell read off the provider's own developer docs, reseller onboarding pages, or consistent integrator reports
Values are dated and carry a confidence marker
Anything we could not stand behind is null and renders as an em dash, not a guess
That covers most published rate limits and several undisclosed opening deposits, quoted by sales only
The killer field, minimum spend to a working key, is the lowest total US-dollar outlay to an accepted authenticated call
It counts account-balance minimums, opening deposits, mandatory memberships and accreditation fees
It excludes the price of the domain itself
Where a free sandbox gates production, the production figure is reported and the sandbox noted
Every vendor buries this number, and it reorders the table completely

Full methodology and sourcing policy →

Cite this comparisonCC-BY-4.0 · verified 2026-07-23

Porkbun, Name.com and NameSilo hand you a working key for free, while wholesale platforms and higher-priced Route 53 and Vercel demand contracts or deposits first. — toolweight, https://toolweight.com/compare/domain-api-providers, verified 2026-07-23. Data from toolweight (https://toolweight.com), licensed CC-BY-4.0.

Frequently asked questions

Which domain API can I start using today with no contract and no deposit?

Porkbun, NameSilo, Name.com, Dynadot, Internet.bs and Gandi issue a key from a normal account at zero cost
Route 53 and Vercel need only an existing AWS or Vercel account
Namecheap issues a free sandbox key but gates production behind US$50 or twenty domains
GoDaddy now requires ten domains under management or a paid Discount Domain Club membership

Can I register a .com.au domain through an API?

Yes, but the list is short
Synergy Wholesale is strongest, modelling the auDA eligibility fields (ABN or ACN, registrant ID type, eligibility reason) in the call
OpenSRS carries them too; Route 53 accepts .com.au with eligibility data on the contact
Porkbun, Namecheap and Vercel do not sell .au at all

Do I need to be an ICANN-accredited registrar to register domains from code?

No
Every provider here is accredited itself or resells someone who is, and the API is the point of that
Self-accreditation costs US$3,500 to apply plus US$4,000 a year, before registry deposits, insurance and an EPP client
Only worth it above roughly a hundred thousand names under management

Which registrar APIs have a real sandbox?

Namecheap runs a sandbox host, GoDaddy an OTE environment, Name.com a development host
Gandi, OpenSRS and Hexonet all run proper OT&E systems with free, fake registrations
Route 53, Vercel Domains, Porkbun and Synergy Wholesale have none
Against those, test with a cheap TLD and delete inside the grace window

How do I retrieve a domain's EPP or auth code through an API?

Name.com, Route 53, Hexonet, OpenSRS, Internet.bs and Synergy Wholesale return the code to an API call
NameSilo has a retrieval endpoint but emails the code to the admin contact
Namecheap, Porkbun, GoDaddy and Vercel expect a human in a dashboard or inbox
Treat this as blocking if you hand domains back to customers

Do these APIs expose renewal prices, or only registration prices?

Wholesale platforms expose renewal separately: OpenSRS, Hexonet, Synergy Wholesale and Netim return per-TLD registration, renewal and transfer at your tier
Porkbun's pricing endpoint is public and unauthenticated
NameSilo, Name.com, Namecheap, Gandi and Route 53 all return renewal figures
GoDaddy and Vercel are the notable gaps

What rate limits should I expect on availability checks?

Assume they are the binding constraint
Namecheap documents roughly twenty calls a minute, 700 an hour and 8,000 a day
Porkbun throttles domain checks to about one every ten seconds; Route 53 throttles too hard to sweep a list
Only GoDaddy, Hexonet and Name.com make bulk or streaming search practical

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