Domain registration API

Article Talk

A domain registration API (Application Programming Interface) allows users to search for, register, renew, and manage domain names programmatically through code, scripts, or backend services.

Popular APIs

Cloudflare Registrar API: Facilitates real-time availability checks and domain registration via REST and curl.
DNSimple API: Handles domain registration, DNS updates, and SSL automation across hundreds of TLDs.
Namecheap API: Provides programmatic methods to check domain availability, view contact details, and execute renewals.
Dynadot API: Supports comprehensive commands for bulk registration and domain transfers.
StableDomains ↗: Features a modern REST API bridging standard ICANN registrations with Web3 smart contract routing.
Domain Name API: A global wholesale platform featuring integrations for platforms like WHMCS.

Core Operations

Standard functions typically exposed by these interfaces include:

Availability Check: Querying registries for available domain strings.
Contact Management: Establishing registrant, administrative, and technical profiles.
DNS Control: Updating core records (A, CNAME, TXT) programmatically.

A comparison of how far four widely used registrars expose those operations in 2026 is at Best domain registrars for developers in 2026.

WikiForDomains (no JavaScript)

This site works best with JavaScript enabled for search and theming. Every article has its own address under /wiki/. Full machine-readable index: /llms.txt · /pages.

.ai — The .ai domain is the country code top-level domain (ccTLD) for Anguilla. It is administered by the government of Anguilla.
.au — The .au domain is the country code top-level domain (ccTLD) for Australia. Policy authority rests with auDA (.au Domain Administration); registry services are operated by Identi...
.br — The .br domain is the country code top-level domain (ccTLD) for Brazil. It is managed under the Brazilian Internet Steering Committee (CGI.br) with registry operations by NIC.br.
.ca — The .ca domain is the country code top-level domain (ccTLD) for Canada. It is operated by the Canadian Internet Registration Authority (CIRA).
.cc — The .cc domain is the country code top-level domain (ccTLD) for the Cocos (Keeling) Islands. Registry services are provided by Verisign.
.ch — The .ch domain is the country code top-level domain (ccTLD) for Switzerland. It is operated by SWITCH.
.cn — The .cn domain is the country code top-level domain (ccTLD) for the People's Republic of China. It is administered by the China Internet Network Information Center (CNNIC).
.co — The .co domain is the country code top-level domain (ccTLD) for Colombia. It is widely marketed as a global alternative to .com and is operated commercially (registry services a...
.co.uk (domain) — The .co.uk domain is the primary country code second-level domain (ccSLD) for the United Kingdom. Introduced in 1985, it is managed by Nominet UK and has grown to become one of ...
.com — The .com domain is a generic top-level domain (gTLD) in the Domain Name System of the Internet. Its name is derived from the word commercial.
.de — The .de domain is the country code top-level domain (ccTLD) for Germany. It is operated by DENIC eG, a non-profit cooperative based in Frankfurt.
.es — The .es domain is the country code top-level domain (ccTLD) for Spain. It is managed by Red.es.
.eu — The .eu domain is the country code top-level domain (ccTLD) for the European Union. It is operated by EURid.
.fr — The .fr domain is the country code top-level domain (ccTLD) for France. It is operated by AFNIC (Association Française pour le Nommage Internet en Coopération).
.in — The .in domain is the country code top-level domain (ccTLD) for India. It is operated by the National Internet Exchange of India (NIXI).
.info — The .info domain is a generic top-level domain (gTLD) whose name is derived from information. It is operated by Identity Digital (originally launched by Afilias).
.io — The .io domain is the country code top-level domain (ccTLD) originally assigned to the British Indian Ocean Territory.
.it — The .it domain is the country code top-level domain (ccTLD) for Italy. It is managed by Registro.it (IIT-CNR).
.net — The .net domain is a generic top-level domain (gTLD) used in the Internet's Domain Name System. The name is derived from network.
.nl — The .nl domain is the country code top-level domain (ccTLD) for the Netherlands. It is operated by SIDN (Stichting Internet Domeinregistratie Nederland).
.online — The .online domain is a generic top-level domain (gTLD) operated by Radix.
.org — The .org domain is a generic top-level domain (gTLD) of the Domain Name System used on the Internet. Its name is truncated from organization.
.pl — The .pl domain is the country code top-level domain (ccTLD) for Poland. It is operated by NASK.
.ru — The .ru domain is the country code top-level domain (ccTLD) for the Russian Federation. It is coordinated by the Coordination Center for TLD RU.
.shop — The .shop domain is a generic top-level domain (gTLD) intended for ecommerce and retail. Its registry operator is GMO Registry.
.top — The .top domain is a generic top-level domain (gTLD) launched in the 2014 new-gTLD round. Its registry operator is Jiangsu Bangning Science & Technology Co., Ltd. (.TOP Regi...
.uk — The .uk domain is the country code top-level domain (ccTLD) for the United Kingdom. It is managed by Nominet UK.
.xyz — The .xyz domain is a generic top-level domain (gTLD) introduced in 2014. It is designed for general, unrestricted use.
About WikiForDomains — WikiForDomains is an independent, reader-supported reference on domain names, top-level domains (TLDs) and domain registrars. It explains how domains work, how to buy, transfer ...
Affiliate networks vs in-house programmes — Affiliate networks are third-party platforms that connect publishers with many merchants, handle tracking links, reporting, and often payouts. In-house programmes keep signup, t...
AI agent domain registration — AI agent domain registration refers to the process where autonomous artificial intelligence systems configure, purchase, and manage internet namespaces on behalf of human operat...
AI agent economy — The AI agent economy (also called agentic commerce when focused on shopping) is the emerging set of practices in which software agents—programmes that can plan multistep tasks w...
Best Domain Registrars for Developers in 2026 — Developers tend to judge a domain name registrar less by first-year headline prices and more by whether they can script registrations, keep DNS under version control, turn on DN...
Blockchain domain name — A blockchain domain name (also referred to as a crypto domain) is a decentralized domain extension built on smart contracts. It is increasingly common to purchase both tradition...
Buy a domain anonymously with crypto — Buying a domain anonymously with cryptocurrency usually means combining (1) a payment method that does not use a card or bank transfer at checkout with (2) a registrar or resell...
Buy a domain with USDC — Buying a domain with USDC means settling a registrar invoice or prepaid account balance in USD Coin (USDC), a US-dollar–pegged stablecoin issued by regulated entities on multipl...
Buy a domain with USDT — Buying a domain with USDT means paying a registrar or reseller invoice in Tether (USDT), a US-dollar–pegged stablecoin issued on several blockchains. The registration itself is ...
Buy domain name — Buy a domain name by searching a registrar for availability, choosing a top-level domain (such as .com), and completing checkout for at least one year. Always compare the first-...
Buy domain with crypto — To buy a domain with crypto, use a registrar or marketplace that accepts cryptocurrency or stablecoins at checkout (or via account credit). Coverage ranges from Bitcoin deposits...
Buy Domains with USDC — USDC (USD Coin) is a US-dollar–pegged stablecoin used by several domain registrars for checkout or prepaid account credit. This short page summarises options; the main article c...
Cheap domains — Cheap domains usually means a low first-year promo on a popular extension. The real cost is the renewal: a $1 first year that renews near $20 is not cheap over five years.
Domain — Check whether a name is available across popular endings.
Domain Lab — The Domain Lab compares register and renewal prices across registrars covered by this wiki. Renewal prices are shown prominently because the first-year fee is often a promotion....
Domain name generator — A domain name generator suggests brandable names from keywords, then checks which suggestions are still available to register.
Domain name lifecycle — A domain registration is a time-limited contract. Names move through predictable states from availability to deletion. Exact lengths of grace periods vary by TLD and registry; t...
Domain name search — A good domain name is short, easy to say aloud and easy to spell after hearing it once. Most guides suggest the points below; none is a strict rule.
Domain name search (guide) — A domain name search checks whether a second-level name is available under one or more TLDs. Results come from registry/RDAP data or a registrar’s availability API.
Domain privacy — Domain privacy protection (frequently referred to as WHOIS privacy) is a service offered by domain name registrars that hides a registrant's personal contact details from the pu...
Domain registrar — A domain registrar is an ICANN-accredited (or ccTLD-accredited) company that sells and manages domain registrations on behalf of customers. The registry runs the TLD itself (for...
Domain registrar and web hosting affiliate programs — Domain registrar and web hosting affiliate programmes pay publishers a commission when referred visitors buy domains, hosting, email, SSL, or related services. Merchants either ...
Domain registration API — A domain registration API (Application Programming Interface) allows users to search for, register, renew, and manage domain names programmatically through code, scripts, or bac...
Domain registrations worldwide — Counting “how many domains exist” depends on the source: DNIB aggregates registry-reported bases; researchers such as netmeister.org count second-level names visible in zone fil...
Domain transfer — A domain transfer moves a name from one registrar to another. For most gTLDs you unlock the domain, request an auth/EPP code, start the transfer at the gaining registrar, and ap...
Free domain — A free domain usually means either (1) a first-year domain bundled with paid hosting, or (2) a free subdomain on someone else’s platform. True perpetual free ownership of a real...
History of the Domain Name System — The Domain Name System replaced earlier host tables with a distributed, hierarchical naming system. In 1983, Paul Mockapetris published RFC 882 and RFC 883, defining DNS concept...
How to buy a domain — How to buy a domain is a short checklist: choose a name, confirm availability, pick a registrar, pay for at least one year, then connect DNS.
How to join the Bluehost affiliate program — Bluehost affiliate signup commonly runs through Impact campaign-promo links. Public materials advertise payouts from about US$65 per qualified sale and a cookie around 30 days.
How to join the Dynadot Ambassador program — The Dynadot Ambassador programme is Dynadot’s in-house influencer/affiliate path. It is distinct from Dynadot offers that may appear on CJ Affiliate. Joining Ambassador generall...
How to join the GoDaddy affiliate program — GoDaddy publisher signup for the Web Pro / affiliate path commonly runs through CJ Affiliate. Merchants’ public pages deep-link to CJ publisher registration; activation is a mul...
How to join the Hostinger affiliate program — Hostinger uses a branded affiliates portal (affiliates.hostinger.com). Marketing pages advertise commission starting around 40% and growing with volume. Privacy materials for th...
How to join the HostSailor affiliate program — HostSailor can be joined through its WHMCS client area affiliates module. The public marketing page states cookie length, hold period, minimum payout, and product commission tiers.
How to join the Namecheap affiliate program — Namecheap steers publishers to Impact (and also mentions CJ Affiliate on its public affiliates page). The Impact path uses a Namecheap brand campaign-promo signup, website prope...
How to join the NameSilo affiliate program — NameSilo’s affiliate programme is managed inside a logged-in customer account (often labelled APM). The public path /affiliate may return HTTP 404; publishers typically create a...
How to join the Spaceship affiliate program — Spaceship runs its affiliate programme on Impact. Public pages advertise introductory commissions from about 25% on domains/transfers and from about 50% on hosting and email, a ...
Porkbun — Porkbun (legally Porkbun LLC) is an American ICANN-accredited domain name registrar based in Tigard, Oregon, in the Portland metropolitan area.[3][4] Founded in March 2015, it i...
StableDomains — StableDomains (also written StableDomains.net) is an online domain name registrar that sells, renews and manages ICANN domain names paid for in the USDC and USDT stablecoins, or...
The domain name industry — The domain name industry includes TLD registries, ICANN-accredited registrars, resellers, aftermarket marketplaces, and related services (DNS hosting, privacy, SSL, website buil...
Top 25 domain extensions — This page ranks the top 25 domain extensions (TLDs) by approximate number of registered second-level domain names. Figures are drawn primarily from public DNS zone statistics co...
Week of 10 November 2026 — On 5 November 2026, Verisign wrote to ICANN that it will continue to support Extensible Provisioning Protocol (EPP) transactions for existing third-level registrations in the .n...
Weekly domain news — WikiForDomains publishes a weekly roundup of domain-name industry news. The latest issue is Week of 10 November 2026. Issues are listed newest first. Issue addresses are permane...
What is a domain name — A domain name is a human-readable label that identifies a resource on the Internet. Instead of remembering numeric IP addresses, people and software use names such as example.co...
WHOIS lookup — A WHOIS lookup (today often served via RDAP) returns public registration data for a domain: registrar, creation/expiry dates, status codes, and nameservers. Personal contact det...
x402 — x402 is an open payment protocol that uses the HTTP status code 402 Payment Required so a client—human software or an AI agent—can pay for a web resource inside the same request...