.foo domains

The .foo domain is a generic extension from Google Registry aimed squarely at developers. In programming, foo is the classic placeholder name used in examples and tutorials, so the extension carries instant meaning for a technical audience. Like Google's .dev and .app, the entire .foo namespace is on the HSTS preload list, which means browsers connect only over HTTPS and a valid TLS certificate is required for the site to load, making every .foo domain secure by default. Registration is open to anyone. Developers use it for coding tutorials, documentation, demos, personal projects, and tools where an insider reference and enforced security both fit. For a technical project that wants a playful nod to programming culture with modern security built in, .foo is a natural pick.

.foo domain details

Type	Generic Top-Level Domain
Registry	Google Registry
Registration	$11.00/yr
Renewal	$11.00/yr
WHOIS privacy	Free
DNSSEC	Supported
Registration period	1 to 10 years

Register .foo domains with an AI agent

OSIR is an AI-native registrar. Every .foo 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 .foo domain?: Search for the .foo 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 $11.00/yr and includes free WHOIS privacy, DNSSEC, and anycast DNS.
Can I register a .foo 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 .foo domains on your behalf.
What is included with a .foo domain registration?: Every .foo domain registered through OSIR includes anycast DNS, DNSSEC support, free WHOIS privacy protection, registrar lock, and full API and MCP access. Registration starts at $11.00/yr.
How much does it cost to renew a .foo domain?: .foo renewal is $11.00/yr through OSIR. Prices include ICANN fees and a 3% or $0.30 processing fee (whichever is greater). There are no hidden fees.