indexo.dev

rfr-holding.de

.de crawl

First seen 2026-04-23 · Last seen 2026-04-23 · ok HTTP 200 20209 ms crawled 2026-05-17

DE · 217.160.0.76 · AS8560 IONOS SE

Reputation 87/100 weak security headers no dmarc policy

Registration

Updated
2018-08-13
Name servers
  • ns1085.ui-dns.biz.
  • ns1085.ui-dns.com.
  • ns1085.ui-dns.de.
  • ns1085.ui-dns.org.

DNS records live

NS
  • ns1085.ui-dns.biz
  • ns1085.ui-dns.com
  • ns1085.ui-dns.de
  • ns1085.ui-dns.org
MX
  • 0 rfrholding-de0i.mail.protection.outlook.com
TXT
  • v=verifydomain MS=7311157
  • 0DimYL5ZLACweqapbhJslGh+FBBoBDwu9/EokMTzwoW9yyaioYs5kUYEemUzzEvaLSAYJiWjll2fFvEcXdbF9w==

Email authentication weak

SPF
v=spf1 a mx include:spf.protection.outlook.com include:spf.emailsignatures365.com ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

Sectigo Public Server Authentication CA DV R36
from 2025-09-11 to 2026-09-26
Expires in 129 days

Full certificate history on crt.sh ↗

Linked from (1)