indexo.dev

optimal-systems.com

.com crawl

First seen 2026-04-14 · Last seen 2026-05-12 · ok HTTP 200 1536 ms crawled 2026-05-07

DE · 195.201.31.128 · AS24940 Hetzner Online GmbH

Reputation 94/100 dmarc monitor-only

Registration

Registrar
Amazon Registrar, Inc.
Created
1996-09-09
Expires
2026-09-08 112 days left
Updated
2026-04-22
Name servers
  • ns-1059.awsdns-04.org
  • ns-1839.awsdns-37.co.uk
  • ns-748.awsdns-29.net
  • ns-77.awsdns-09.com

DNS records live

NS
  • ns-1059.awsdns-04.org
  • ns-1839.awsdns-37.co.uk
  • ns-748.awsdns-29.net
  • ns-77.awsdns-09.com
MX
  • 100 mail.optimal-systems.de
TXT
  • google-site-verification=j1TLsumC0xfDnf_sycB3cWGuD8xBkxozwpwrDU9C4x8
  • google-site-verification=zK8QhVDOneN7TuPSAnPC6PpIUx5YzH8mgk5mmIYLFUQ
  • google-site-verification=L30Ci3aBKoAz9ebiKLcEoStZgu8qYO7-PX5c7efccfw

Email authentication weak

SPF
not published
DMARC
v=DMARC1; p=none;
policy: none (monitoring only)
DKIM
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvXaeIv0BVc/ESdcMCJ2ujKvKOLqG1RiTVuM3JMwvtXDj4KH1BpP3C7HMSk7d2SrmgiHjANaabnRarhDtuY…
  • s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoz5Tp9Qw8EtwIjlGZtHCE1qEQ1u8lIpFruQi+juH3/xgxwNQq0HNHFqeLQQfo2Dj18z+OoBNpRQocrYy/H…
selectors probed

Certificate (current)

E7
from 2026-03-19 to 2026-06-17
Expires in 29 days

Full certificate history on crt.sh ↗

Linked from (1)