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DNS, Routing & BGP
Resolvers, DNSSEC, anycast, BGP hijacks/leaks, and routing security (RPKI).
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How to Change the DNS Server on Linux So It Survives a Reboot
2+ hour, 22+ min ago (1834+ words) Changing the DNS server on Linux sticks only when the command lands where the component that owns the setting reads it. On Ubuntu, Fedora, Debian, and Arch that component is systemd-resolved, and /etc/resolv.conf is a symlink it rebuilds....
ShortDot Reveals 80 Short, Memorable gTLD Strings Across 40 ICANN Applications
17+ hour, 36+ min ago (408+ words) ShortDot Registry enters its first ICANN application round with a portfolio built around short, generic, and meaningful names. DUBLIN, September 15, 2026 (Newswire.com) - ShortDot (Ireland) Limited, the applicant entity within the ShortDot group, announced that it submitted 40 applications to ICANN's 2026 New…...
│ Stop Stitching WHOIS, DNS, and BGP by Hand
7+ hour, 43+ min ago (38+ words) One domain is often all you get. Turning it into an operator means WHOIS in one tab, DNS in another, a BGP looker for the network, a spreadsheet to join …...
Separate DNS Zone vs Subdomain — Non-Production Write Boundary Trade-Offs
11+ hour, 58+ min ago (180+ words) I start an incident review by asking who held the credential, because a DNS provider can validate a record's syntax but cannot recover the deployment's intended environment. A 15-second client timeout and three retry attempts are useful limits in a…...
Node.js API Domain Retirement Explained with 3 Shared Zone Risk Controls
15+ hour, 58+ min ago (355+ words) Short answer: during domain offboarding, delete only the SPF, DKIM, and DMARC records owned by that customer-support mail domain; remove the whole zone only when an ownership check proves that the zone is dedicated, empty of unrelated records, and explicitly…...
Industry Pioneer Dan Rubin Returns to the Domain Drop Catching Arena With a Completely Rebuilt Version of an Old Favorite - Just Dropped.com
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Checking your browser before redirecting.
1+ day, 5+ hour ago (42+ words) Prince Harry And Meghan Markle Move Kids From UK School Over Security Concerns News Mobile Checking your browser before redirecting. You are seeing this because the administrator of this website has set up a firewall to protect the server against…...
DNS Troubleshooting
1+ day, 9+ hour ago (108+ words) The system admins team of xFusionCorp Industries has noticed intermittent issues with DNS resolution in several apps. App Server 2 in Stratos Datacenter is having some DNS resolution issues, so we want to add some additional DNS nameservers on this server....
The hostname you visit over HTTPS is sent in plain text
1+ day, 10+ hour ago (638+ words) So I captured the first thing my machine sends when it opens an HTTPS connection, the TLS ClientHello, and went looking for the hostname in the bytes. It was not hard to find. Here is the ClientHello openssl sent when…...
4 Failure Modes of TXT Record Domain Ownership Verification in FastAPI Onboarding
1+ day, 12+ hour ago (419+ words) Four failure modes account for most of the damage, and none of them are exotic. Every standard that had to solve this landed in the same place. DMARC publishes policy in a TXT record at _dmarc under the domain precisely because…...