man7.org

.org toplist crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 799 ms crawled 2026-05-18

DE · 45.84.74.9 · AS8767 M-net Telekommunikations GmbH

Reputation 89/100 weak security headers dmarc monitor-only

sector tech type homepage

HTML metadata

Title
Michael Kerrisk - man7.org
Language
en-US

Technology

Server
Apache
Analytics
  • Statcounter

Third-party hosts loaded (2)

  • c.statcounter.com×1
  • www.statcounter.com×1

Registration

Registrar
Gandi SAS
Created
2005-12-15
Expires
2029-12-15 1306 days left
Updated
2025-06-03
Name servers
  • ns-102-a.gandi.net
  • ns-203-b.gandi.net
  • ns-24-c.gandi.net

DNS records live

NS
  • ns-102-a.gandi.net
  • ns-203-b.gandi.net
  • ns-24-c.gandi.net
MX
  • 1 aspmx.l.google.com
  • 10 alt3.aspmx.l.google.com
  • 10 alt4.aspmx.l.google.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
  • google-site-verification=6yqdzWtjBD9BVkrXEriCj0oCiw6p0kAOdZs09mcRoeg

Email authentication partial

SPF
v=spf1 include:_spf.google.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none
policy: none (monitoring only)
DKIM
  • google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxggA9R1rd8A0oJKPGvH5lavQxABEW0GJ7m1KScnXuFJ+cB0o4dSQBV2MEZQdtqDQvC8yXjQyET2hiI…
selectors probed

Certificate (current)

R13
from 2026-04-22 to 2026-07-21
Expires in 63 days

HTTP security headers

Header hygiene 30/100 Checked live page: https://man7.org/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (2)

Linked from (7)