indexo.dev

zx2c4.com

.com crawl dns

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 2052 ms crawled 2026-05-18

DE · 192.248.189.215 · AS20473 The Constant Company, LLC

Reputation 100/100

Classifying

HTML metadata

Title
ZX2C4
Description
The portal for geek projects of Jason A. Donenfeld, also known as ZX2C4.
Language
en

Technology

Server
ZX2C4

Registration

Registrar
Squarespace Domains II LLC
Created
2000-04-21
Expires
2032-04-21 2164 days left
Updated
2024-07-02
Name servers
  • ns1.zx2c4.com
  • ns2.zx2c4.com

DNS records live

NS
  • ns1.zx2c4.com
  • ns2.zx2c4.com
MX
  • 10 mxa.mailgun.org
  • 10 mxb.mailgun.org
TXT
  • google-site-verification=YpE7u8b4O44Oei3OX6NMuWcev6blXl13OZ0ik-HgSVw

Email authentication strong

SPF
v=spf1 a:mail.zx2c4.com include:_spf.kernel.org include:mailgun.org ~all
softfail (~all)
DMARC
v=DMARC1; p=quarantine;
policy: quarantine
DKIM
no key found at common selectors

Certificate (current)

E7
from 2026-04-25 to 2026-07-24
Expires in 66 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://www.zx2c4.com/

present
  • strict-transport-security
  • x-frame-options
  • x-content-type-options
findings
  • missing Content Security Policy
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
sameorigin
x-content-type-options
nosniff
strict-transport-security
max-age=15768020; preload

Links to (2)

Linked from (4)