Domain Extensions / .ac

.ac domains

The .ac domain is the country-code extension for Ascension Island, but it is registered and used worldwide with no local-presence requirement. The two letters are widely read as an abbreviation for academic or academy, which has made .ac popular with educational projects, courses, and institutions outside the formal national academic namespaces, as well as with technology projects that like its brevity. It is managed by the same registry family as .io and .sh, with standard registration terms. For a short, meaningful address that carries an academic connotation or simply reads well as part of a two-letter word ending, .ac offers a concise, globally available option that stands apart from the common generic extensions.

.ac domain details

Register .ac domains with an AI agent

OSIR is an AI-native registrar. Every .ac domain can be registered, renewed, and managed through natural language using Claude, ChatGPT, or any agent that supports the Model Context Protocol (MCP).

Frequently asked questions

How do I register a .ac domain?

Search for the .ac name you want, confirm it is available, and complete checkout - or ask an MCP-compatible AI assistant to do it for you. Registration through OSIR starts at $45.00/yr and includes free WHOIS privacy, DNSSEC, and anycast DNS.

Can I register a .ac domain with Claude or ChatGPT?

Yes. OSIR supports the Model Context Protocol (MCP) with 82 tools, so any MCP-compatible AI assistant - including Claude Desktop, Cursor, and Copilot - can search, register, and manage .ac domains on your behalf.

What is included with a .ac domain registration?

Every .ac domain registered through OSIR includes anycast DNS, DNSSEC support, free WHOIS privacy protection, registrar lock, and full API and MCP access. Registration starts at $45.00/yr.

How much does it cost to renew a .ac domain?

.ac renewal is $45.00/yr through OSIR. Prices include ICANN fees and a 3% or $0.30 processing fee (whichever is greater). There are no hidden fees.