indexo.dev

sitesforteachers.com

.com crawl

First seen 2026-06-01 · Last seen 2026-06-03 · error HTTP 403 crawled 2026-06-04 5 attempts

US · 12.233.124.174 · AS7018 AT&T Enterprises, LLC

Reputation 65/100 wrong cert crawl error

cloudflare bot challenge

Registration

Registrar
MarkMonitor Inc.
Created
2000-03-21
Expires
2029-03-21 1020 days left
Updated
2025-07-08
Name servers
  • ns1.cambiumlearning.com
  • ns2.cambiumlearning.com

DNS records live

NS
  • ns1.cambiumlearning.com
  • ns2.cambiumlearning.com
MX
  • 10 us-smtp-inbound-1.mimecast.com
  • 10 us-smtp-inbound-2.mimecast.com

Email authentication strong

SPF
v=spf1 -all
strict (-all)
DMARC
v=DMARC1; p=reject; rua=mailto:2e7f13de7e6b838@rep.dmarcanalyzer.com; ruf=mailto:2e7f13de7e6b838@for.dmarcanalyzer.com; fo=1;
policy: reject (enforced)
DKIM
no key found at common selectors

Certificate (current) wrong cert

Sectigo Public Server Authentication CA OV R36
from 2025-07-16 to 2026-07-17
Expires in 42 days

Full certificate history on crt.sh ↗

Linked from (2)