indexo.dev

dbredu.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 2238 ms crawled 2026-05-18

KR · 218.50.7.248 · AS9318 SK Broadband Co Ltd

Reputation 64/100 wrong cert weak security headers dmarc monitor-only

Classifying

Technology

Server
Apache

Registration

Registrar
HANGANG Systems, Inc. dba Doregi.com
Created
2014-08-07
Expires
2027-08-07 443 days left
Updated
2026-02-02
Name servers
  • ns1.dunet.co.kr
  • ns2.dunet.co.kr

DNS records live

NS
  • ns.dunet.co.kr
  • ns1.dunet.co.kr
MX
  • 10 mail.dbredu.com

Email authentication partial

SPF
v=spf1 include:_spf.google.com ip4:218.50.7.248 ~all
softfail (~all)
DMARC
v=DMARC1; p=none; aspf=r; adkim=r;
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current) wrong cert

Sectigo Public Server Authentication CA DV R36
from 2026-03-10 to 2027-04-10
Expires in 324 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked over plain HTTP: http://dbredu.com/

findings
  • checked over plain HTTP
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Linked from (1)