Add perimeterlens to Domain Name > Subdomains - #774
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Zero-dependency Node.js CLI: passive CT-log subdomain discovery, email spoofability (SPF/DMARC/DKIM/BIMI/MTA-STS), and TLS certificate health, rolled into one composite score. MIT licensed, no telemetry, 73 passing tests. https://github.com/NicklasSandin/perimeterlens
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Adds perimeterlens under
Domain Name > Subdomains, alongside the other CT-log/subdomain-discovery entries in that category (crt.sh, certgraph, etc.).What it is: a free, MIT-licensed, zero-runtime-dependency Node.js CLI that gives a passive exposure read on a domain you own — certificate-transparency-log subdomain discovery, email spoofability (SPF/DMARC/DKIM/BIMI/MTA-STS), and TLS certificate health (expiry, chain trust, protocol), rolled into one composite 0-100 score.
Why this category: its subdomain-discovery mechanism (CT-log search) is the same technique as
crt.sh/certgraph, already listed here — the local-install(T)marker andopsec: passivematch that pattern.Honesty note (per the guidelines in this repo's README): it does not do HTTP security-header grading — that's explicitly out of scope, and the tool's own README points users to Mozilla HTTP Observatory / SecurityHeaders.com for that instead of duplicating it.
I'm the maintainer of this tool, flagging that per the framework's own contribution note ("you don't have to be the author of the tool" implies authorship should be disclosed when it applies).