indexo.dev

erschools.com

.com crawl

First seen 2026-05-28 · Last seen 2026-05-28 · error HTTP 403 crawled 2026-06-03 5 attempts

US · 104.21.83.2 · AS13335 Cloudflare, Inc.

Reputation 84/100 crawl error dmarc monitor-only

cloudflare bot challenge

Registration

Registrar
Cloudflare, Inc.
Created
2000-03-21
Expires
2027-03-20 289 days left
Updated
2026-02-18
Name servers
  • fay.ns.cloudflare.com
  • ian.ns.cloudflare.com

DNS records live

NS
  • fay.ns.cloudflare.com
  • ian.ns.cloudflare.com
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
Verified for
  • Adobe
  • Apple
  • Google
  • Microsoft 365
  • OpenAI

Email authentication partial

SPF
v=spf1 ip4:136.228.36.30 ip4:136.228.36.32 include:_spf.google.com include:customerspf.schoolmessenger.com include:servers.mcsv.net -all
strict (-all)
DMARC
v=DMARC1;p=none;rua=mailto:a98b5cbaed624eb9986825b6b0b4eef0@dmarc-reports.cloudflare.net,mailto:re+umztm8ppv6k@dmarc.postmarkapp.com; sp=none; aspf=r;
policy: none (monitoring only) · sp=none
DKIM
  • google: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCewkvw+YsR2a5Ap5msaWbA1/Eupnsk8eFuR8dSHN10JXUf7kugWxsu+RkvW0DbF1ahwseON3bOb7kyAPJ5iC…
  • k1: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i89sA2guU0ta4UX1Xzm06XIU6iBP41VwmPwBGRNofhBVR+e6WHUo…
selectors probed

Certificate (current)

WE1
from 2026-05-14 to 2026-08-12
Expires in 69 days

Full certificate history on crt.sh ↗

Linked from (1)