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We’re making Bunny DNS free
24 Jun 2026
bunny.net

Your DNS bill shouldn't scale with your traffic. So we removed query fees from Bunny DNS entirely. No per-request billing and no query limits.

dig Cheatsheet
13 Jun 2026
linuxize.com

Quick reference for querying DNS records, tracing resolution, and debugging name resolution with dig

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Whois command in linux
25 May 2026
linuxize.com

The whois command looks up domain registration, registrar, name server, expiry, IP allocation, and AS number details from Linux.

nslookup Cheatsheet
11 Apr 2026
linuxize.com

Quick reference for querying DNS records and checking name resolution with nslookup

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What caused the large AWS outage?
23 Oct 2025
open.substack.com

On Monday, a major AWS outage hit thousands of sites & apps, and even a Premier League soccer game. An overview of what caused this high-profile, global outage

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Useful utilities and toys over DNS
11 Jun 2022
dns.toys

Free and useful services over DNS accessible on command line

Some ways DNS can break
17 Jan 2022
jvns.ca
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DNS, or the Domain Name System, is an integral part of how the internet functions today. However, the way that DNS works is often quite mysterious for new a…

New tool: Mess with DNS!
16 Dec 2021
jvns.ca
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What is a Domain Name? - Learn web development | MDN
11 Dec 2021
developer.mozilla.org

Domain names are a key part of the Internet infrastructure. They provide a human-readable address for any web server available on the Internet.

DNS doesn't "propagate"
6 Dec 2021
jvns.ca
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Custom domains for websites, web apps, and email

Use our WHOIS lookup tool to search available domain names or current domain owners. Start your search today!

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Domain names provide the internet much more user-friendly way of referencing servers, but have you ever wondered how it works under the covers?

Every website, large or small, started with an idea, rapidly followed by registering a domain. Most registrars offer promotions for your initial domain registration and then quietly hike the price with each renewal.

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Certificates for localhost
15 Jul 2018
letsencrypt.org

Sometimes people want to get a certificate for the hostname “localhost”, either for use in local development, or for distribution with a native application that needs to communicate with a web application. Let’s Encrypt can’t provide certificates for “localhost” because nobody uniquely owns it, and it’s not rooted in a top level domain like “.com” or “.net”. It’s possible to set up your own domain name that happens to resolve to 127.

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Linux / UNIX: DNS Lookup Command
24 Sep 2013
cyberciti.biz

Explains how to use host or dig command to query DNS name servers, dns lookup under UNIX or Linux for troubleshooting purpose.