Websites on .io

cl0q’s independent crawler has indexed 83,458 live pages on .io domains, making it the #24 most common top-level domain in the index.

83.5k
Pages indexed
#24
Rank by size
0.53%
of indexed web

Notable .io sites

Ranked apex-first by popularity signal, from cl0q’s index — not an endorsement. Click any site for its crawl profile.

Top hosting networks for .io

Networks hosting the most .io sites in cl0q’s index — click a network to see everything it hosts.

Languages on .io

en60.1k
vi2.2k
de1.5k
fr1.2k
es919
pt434
zh374
ru359

Page languages most used on .io sites — click to explore that language across the whole index.

What serves .io

nginx8.6k
vercel6.3k
apache3.3k

Server software behind .io sites — click to see that software everywhere else.

Related top-level domains

.cz (100.4k).eu (91.2k).se (90.7k).co (76.7k).at (74k).in (70.5k) All →
Search the whole index — recon operators like ip:, org:, favicon: let you pivot across infrastructure.

📡 This page as open data: GET /api/tld/io — no API key, CORS open. Docs.