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Domain Reconnaissance: What Your DNS Records Reveal

Domain Reconnaissance: What Your DNS Records Reveal

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6 min read
Day 1 — ইন্টারনেট আসলে কীভাবে কাজ করে

Day 1 — ইন্টারনেট আসলে কীভাবে কাজ করে

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2 min read
issued.live: Certificate Transparency, ICANN Registrations and DNS in One API

issued.live: Certificate Transparency, ICANN Registrations and DNS in One API

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4 min read
issued.live is live

issued.live is live

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2 min read
Find your own dangling subdomains before someone else does

Find your own dangling subdomains before someone else does

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3 min read
Build a Practical Domain Research Workflow with REST APIs and MCP

Build a Practical Domain Research Workflow with REST APIs and MCP

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5 min read
I scanned 500 domains to test my SPF checker. It found four bugs in the checker.

I scanned 500 domains to test my SPF checker. It found four bugs in the checker.

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6 min read
Understanding `dig`: How to Actually Read DNS Query Output

Understanding `dig`: How to Actually Read DNS Query Output

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3 min read
The SPF redirect trap: why -all can make redirect= useless

The SPF redirect trap: why -all can make redirect= useless

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4 min read
ISC BIND 9.18.42 Released: Major Milestone for DNS Security

ISC BIND 9.18.42 Released: Major Milestone for DNS Security

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3 min read
I let a domain expire once. Now I check them all with a script.

I let a domain expire once. Now I check them all with a script.

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2 min read
Understanding DNS by building dig

Understanding DNS by building dig

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10 min read
Pushgateway Heartbeat Gotcha: When ndots and NetworkPolicy Silently Eat Your Alerts

Pushgateway Heartbeat Gotcha: When ndots and NetworkPolicy Silently Eat Your Alerts

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8 min read
SPF record hygiene: the security debt nobody logs

SPF record hygiene: the security debt nobody logs

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5 min read
How BIMI Inspection Actually Works: DNS Records, Selectors, SVG Logos and DMARC

How BIMI Inspection Actually Works: DNS Records, Selectors, SVG Logos and DMARC

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4 min read
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