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Daniel JSep 3, 2026 • 4 min read
issued.live: Certificate Transparency, ICANN Registrations and DNS in One API
issued.live reads Certificate Transparency logs continuously, joins them to ICANN zone-file registra...
#issuedlive#certificatetransparency#ssl#dns
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LisaSep 2, 2026 • 6 min read
I scanned 500 domains to test my SPF checker. It found four bugs in the checker.
SPF has a limit almost nobody hits on purpose and plenty of people hit by accident: a receiver is...
#go#dns#webdev
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Mayank JainSep 2, 2026 • 3 min read
Find your own dangling subdomains before someone else does
Here's a bug that costs an attacker nothing to find and costs you your domain's reputation. Someon...
#security#devops#dns#tutorial
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Daniel JSep 3, 2026 • 2 min read
issued.live is live
issued.live is open to the public: 334 million domains, continuous Certificate Transparency ingest, ...
#launch#certificatetransparency#dns#api
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DevOps DailySep 1, 2026 • 6 min read
DNS Detective: an Agent That Diagnoses Your Domain by Actually Probing It
Ask an LLM "why does mail to my domain bounce?" and you get a plausible list of everything that has....
#ai#dns#digitalocean#agents
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Esteve CastellsAug 30, 2026 • 5 min read
Build a Practical Domain Research Workflow with REST APIs and MCP
Disclosure: I’m Esteve Castells, the maker of DomScan. This tutorial uses DomScan because I can...
#webdev#api#dns#security
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301STSep 2, 2026 • 6 min read
The zone limit your API token hits and your Global API Key does not
Cloudflare documents a fifty domain threshold before pending zones block new ones. A scoped token hi...
#limits#dns#browser#cloudflare
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Devil ScrapesSep 1, 2026 • 4 min read
rdap.org answers 302, and a client that doesn't follow it sees nothing
Quick answer WHOIS is a 1980s text protocol with no schema — every registrar formats it...
#python#webscraping#dns#api
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MehmetAug 31, 2026 • 7 min read
I measured how many websites actually publish a contact address
Every contact scraper on the market says roughly the same thing: it finds contact details on "almost...
#webscraping#programming#webdev#dns
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