NSLookup.io
A fast, cleanly designed DNS lookup tool that shows a domain's records and nameservers, plus related network utilities for checking how a site is set up.
No account needed · sign in to keep your taste everywhere
More like this
Pages that share NSLookup.io's themes. Or browse all of Tech.
How DNS Works
A charming comic strip that explains step by step what happens when you type a website address and press enter.
DNS Checker
A free tool that checks DNS record propagation across servers around the world, showing at a glance whether a domain or…
A Day in the Life: The Global BGP Table
A data-driven look at how the internet's global routing table changes over a single day, with charts of announcements, w…
Traceroute Visualizer
An interactive tool that maps network traceroute paths, showing each hop, its latency and geographic location so you can…
ifconfig.co
A no-frills lookup tool that shows your public IP address and information about it, such as location and network provide…
Let's Code a TCP/IP Stack, 5: TCP Retransmission
A hands-on tutorial in a series building a TCP/IP stack from scratch, this installment covering how TCP retransmission d…
Stumble onto more like this
One click takes you to a page you didn't know you were looking for. Rate it and the next one lands closer to your taste.
Add to Browser — it's freeWorks in Chrome, Edge and Brave. No account needed.