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DNS Scavenging Not Working: A Read-First Server, Zone Aging, Record Timestamp, and Replication Triage

DNS Scavenging Not Working: A Read-First Server, Zone Aging, Record Timestamp, and Replication Triage

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33 min read
How to Read dig Output When DNS Looks Wrong

How to Read dig Output When DNS Looks Wrong

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8 min read
Stuck on 'DNS Check in Progress'? Unblocking GitHub Pages Custom Domains for Faster Delivery

Stuck on 'DNS Check in Progress'? Unblocking GitHub Pages Custom Domains for Faster Delivery

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4 min read
Which email provider and CMS does a company use? Check 1,000 domains in one run

Which email provider and CMS does a company use? Check 1,000 domains in one run

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2 min read
Collecting DNS Lookups on macOS with osquery

Collecting DNS Lookups on macOS with osquery

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7 min read
My self-hosted ad blocker poisoned Apple's push servers and killed iMessage

My self-hosted ad blocker poisoned Apple's push servers and killed iMessage

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4 min read
Debugging DNS Propagation When Records Just Don't Show Up

Debugging DNS Propagation When Records Just Don't Show Up

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3 min read
Migrations don't fail on the big stuff. They fail on SPF counts and expiring certs.

Migrations don't fail on the big stuff. They fail on SPF counts and expiring certs.

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4 min read
Fintech Apex Domain Support in Node.js: 3 Customer Record Cutover Rules

Fintech Apex Domain Support in Node.js: 3 Customer Record Cutover Rules

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6 min read
A ccTLD Hijack Turns Authoritative DNS Into Certificate Evidence

A ccTLD Hijack Turns Authoritative DNS Into Certificate Evidence

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8 min read
Checking ccTLD availability without trusting one source (and what .si actually sells for)

Checking ccTLD availability without trusting one source (and what .si actually sells for)

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4 min read
pit.world: private search, and a doorway to the Moshpit network

pit.world: private search, and a doorway to the Moshpit network

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2 min read
NextDNS + Firefox: DNS-Level Ad Blocking with DoH and Custom Profiles

NextDNS + Firefox: DNS-Level Ad Blocking with DoH and Custom Profiles

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3 min read
Stopping 4 DNS Record Mistakes (TXT, CNAME, MX, and A)

Stopping 4 DNS Record Mistakes (TXT, CNAME, MX, and A)

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7 min read
The DNS Drift That Wasn't DHCP: How Proxmox Cloud-Init Silently Injects Search Domains

The DNS Drift That Wasn't DHCP: How Proxmox Cloud-Init Silently Injects Search Domains

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4 min read
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