New TLDs: Not Bad, Actually

The Top Level Domain (TLD) is the final label in a fully-qualified domain name: The most common TLD you’ll see is com, but you may be surprised to learn that there are 1479 registered TLDs today. This list can be subdivided into categories: Some TLD owners will rent domain names under the TLD to anyContinue reading “New TLDs: Not Bad, Actually”

Chromium’s DNS Cache

From the mailbag: Q: How long does Chromium cache hostnames? I know a user can clear the hostname cache using the Clear host cache button on about://net-internals/#dns, but how long it will take for the cache to be removed if no manual action is taken? After changing DNS records on my server, nslookup from aContinue reading “Chromium’s DNS Cache”

Thoughts on DNS-over-HTTPS

Updated November 30, 2020 with new information about DoH in Edge, ECH, and HTTPSSVC records, and January 25, 2021 with a few remarks about Edge’s implementation. Type in your web browser’s address bar and hit enter. What happens? Before connecting to the server, your browser must convert “” to the network address atContinue reading “Thoughts on DNS-over-HTTPS”