urlcv

Subdomain peek

Curious what hangs off a domain? We list subdomains and see which ones answer on the web.

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Root domain only — e.g. your site or a demo, not a full URL.

Subdomain peek

Type a root domain (like example.com). Behind the scenes we use subfinder to fish up subdomains, then httpx to poke them and grab status codes, page titles, and the odd server hint.

Heads up: runs are async — grab a coffee on big domains; the result page updates when it is done.

We cap how many names we collect per go so nobody’s afternoon disappears into a mega-corp DNS rabbit hole. Anything that does not answer the poke shows up as “quiet” (could be offline, shy, or just not HTTP-friendly).

Fair use: the host app applies per-IP rate limits and a daily cap on runs. Internal-style zones (e.g. .local, .internal) are blocked; by default, domains that resolve only to private IPs are rejected.

Please only point this at things you are happy to prod.

(Server needs subfinder and httpx installed — see the package README for env knobs.)