Tell HN: DNS record "hn.algolia.com" was gone(nslookup.io)

240 points by gslin 3 years ago | 92 comments

No DNS address record found for repo.maven.apache.org(nslookup.io)

64 points by mfiguiere 3 years ago | 18 comments

About dn42(dn42.dev)

13 points by immibis 2 years ago | 5 comments

MaraDNS: A small open-source DNS server(github.com)

52 points by axiomdata316 3 years ago | 22 comments

Another simple online DNS query tool(nstoolbox.com)

36 points by sckn 1 year ago | 15 comments

Free, fast diagnostic tools for DNS, email authentication, and network security(mrdns.com)

52 points by dogsnews 6 months ago | 4 comments

Shutting down our public encrypted DNS(mullvad.net)

432 points by mywacaday 1 month ago | 213 comments

Mullvad blog post announcing it is shutting down its public encrypted DNS (DoH) servers and will sponsor Quad9 instead.

What's happening inside the NIH and NSF(science.org)

861 points by rrock 1 year ago | 1303 comments

Derek Lowe's In the Pipeline blog post on Science.org about current events and turmoil inside the NIH and NSF, dated February 4, 2025.

We’re making Bunny DNS free(bunny.net)

856 points by dabinat 4 months ago | 256 comments

Bunny.net blog post announcing that its Bunny DNS service is becoming free.

Implement DNS in a Weekend(implement-dns.wizardzines.com)

594 points by asicsp 3 years ago | 68 comments

Julia Evans's blog post announcing a free guide to implementing a DNS resolver from scratch in about 200 lines of Python.

Humiliating IIS servers for fun and jail time(mll.sh)

338 points by denysvitali 4 months ago | 82 comments

A blog post on finding and exploiting common misconfigurations in Microsoft IIS web servers, starting from the default IIS splash page.

How to set up SPF, DKIM, and DMARC for your sending domain(mailfully.com)

49 points by spy888 25 days ago | 20 comments

A blog guide from Mailfully explaining how to configure SPF, DKIM, and DMARC DNS records for an email sending domain.