indexo.dev

feynmanlectures.info

.info crawl

First seen 2026-04-15 · Last seen 2026-05-13 · error HTTP 403 crawled 2026-05-10 5 attempts

US · 188.114.97.3 · AS13335 Cloudflare, Inc.

Reputation 82/100 crawl error no dmarc policy

http 403

Registration

Registrar
Cloudflare, Inc
Created
2005-04-30
Expires
2027-04-30 345 days left
Updated
2026-04-11
Name servers
  • achiel.ns.cloudflare.com
  • marissa.ns.cloudflare.com

DNS records live

NS
  • achiel.ns.cloudflare.com
  • marissa.ns.cloudflare.com
MX
  • 0 feynmanlectures-info.mail.protection.outlook.com
TXT
  • NETORGFT13918865.onmicrosoft.com
  • google-site-verification=PmibesI-JAAkGHSivHv8zJnOE358uYRY4IXxLYfYiSA

Email authentication weak

SPF
v=spf1 include:secureserver.net -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

E7
from 2026-04-06 to 2026-07-05
Expires in 47 days

Full certificate history on crt.sh ↗

Linked from (2)