See what powers
a website.
Explore hosting and technology observations from a public web sample.
Domains
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Explore observed websites Companies
Technologies
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Explore technologies 
SMALL ENDINGS. BIG POSSIBILITIES.
Find your corner of the web.
Explore extensions in the IANA catalog.
Public website counts appear where we have observations.
Browse all extensions
About this catalog
Version 2026102400, Last Updated Sat Oct 24 07:07:01 2026 UTC. Catalog entries do not mean their zone files have been imported.
SMALL TOOLS. USEFUL ANSWERS.
A better website starts here.
Free, practical tools. One clear next step.
A LITTLE KNOW-HOW GOES A LONG WAY.
All guides Less jargon. More clarity.
ONE SMALL STEP. A CLEARER PICTURE.Good things start
Good things start
with a closer look.
Find out what powers a website.
Then see what could make it better.