cl0q

21.dev

21.dev is a live English-language website hosted on Cloudflare, Inc. (AS13335) in the United States, served by Cloudflare. cl0q first saw it on 2026-08-13 and last crawled it on 2026-08-13. It resolves to 172.67.216.166 and has mail (MX) records set up. Its favicon is fingerprinted by SHA-256, so you can find every other site that serves the same icon.

How the site describes itself:

Build Bitcoin Apps in Swift with Open-Source Tools | 21.dev

Build Bitcoin apps in Swift with 21.dev—open-source libsecp256k1 wrapper, SPM tools, and docs to ship faster.

Status200 OK — live & indexed by cl0q
First seen2026-08-13
Last crawled2026-08-13
IPv4172.67.216.166
IPv62606:4700:3031::6815:2da4
NetworkAS13335 Cloudflare, Inc. · United States
Mail (MX)route3.mx.cloudflare.net,route2.mx.cloudflare.net,route1.mx.cloudflare.net
Languageen
Servercloudflare
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