gzip.org

Technologies

Found on any of its indexed pages. Each one lists every other site that uses it.

Web servers

Apache

Tracking IDs

Analytics, ad and verification IDs in its source. Sites sharing one are usually run by the same people.

None found.

Contacts

Email addresses, phone links and social profiles it publishes.

None found on its indexed pages.

Server

From the response headers and meta tags of its homepage.

Server

Apache

X-Powered-By

–

Generator

–

IP address

85.187.148.2

Infrastructure

DNS, certificate and favicon, with when each was seen. Shared ones lead to the other sites behind them.

Addresses

85.187.148.21 other site

Mail (MX)

gzip.orgonly this site

Name servers

ns1.a2hosting.com1 other site

ns2.a2hosting.com1 other site

ns3.a2hosting.com1 other site

ns4.a2hosting.com1 other site

Certificate issuer

C = US, O = Let's Encrypt, CN = YR2

Valid until

Dec 15, 2026

Certificate

069cf960181dce05de4baf236f716151137d1 other site

Names it covers

*.adler.me*.gzip.org*.madler.net*.zlib.netadler.megzip.orgwww.adler.madler.netwww.gzip.madler.netwww.zlib.madler.netzlib.net

TXT records

v=spf1 +mx +a +ip4:68.66.224.49 ~all

Ad sellers

Who its ads.txt and app-ads.txt let sell its ad space directly. Sites sharing a seller account usually share an owner.

No ads.txt or app-ads.txt with direct sellers.

Published files

What it publishes for machines. Every version is archived.

• ads.txtnone (HTTP 404)
• app-ads.txtnone (HTTP 404)
• Faviconnone (HTTP 404)
• robots.txt1 version · checked Oct 18, 2026View
• security.txtnone (HTTP 404)
• Sitemapnone (HTTP 404)

History

What the archive holds about it.

Fetched 1 time since Oct 18, 2026, 1 successfully. The archive holds 1 distinct version of 1 page: every change is kept.

Linked from 1 indexed site

The most popular first.

• zlib.net

Links to

Other sites its pages link to, by how many of its pages do.

• gnu.org1 page
• harvard.edu1 page
• ietf.org1 page
• stackoverflow.com1 page
• wikipedia.org1 page
• zlib.net1 page