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Hosting & Network

uni-koeln.de runs on AS5520, with email configured.

Hosting network
AS5520AS5520
Managed DNS
Self-hosted / other
Email
Configured
IPv6 (AAAA)
Enabled
CAA pinning
None

Sits alongside 8 other sites on AS5520. Stable here since we started watching (Jul 28, 2026).

The apex and www are the same hosting — the apex via A records, www via a CNAME to gemini.rrz.uni-koeln.de.

DNS Records for uni-koeln.de

HostnameTypeTTLPriorityContent
uni-koeln.deA0134.95.81.52
uni-koeln.deNS0mail1.rrz.uni-koeln.de
uni-koeln.deNS0noc2.rrz.uni-koeln.de
uni-koeln.deNS0dns-1.dfn.de
uni-koeln.deNS0ns2.netcologne.de
uni-koeln.deMX05uzk-mail-in-v2.rrz.uni-koeln.de
uni-koeln.deMX05uzk-mail-in-v1.rrz.uni-koeln.de
uni-koeln.deSOA3600noc2.rrz.uni-koeln.de hostmaster.uni-koeln.de 2026072706 10800 3600 2419200 3600
uni-koeln.deAAAA02a00:a200:0:2::80
uni-koeln.deTXT0apple-domain-verification=NPadQczkP1xAfjol
uni-koeln.deTXT0MS=ms52477696
uni-koeln.deTXT0cisco-ci-domain-verification=64ff69245d29ac9ceaa0b992ecd76b77594fe0d25edecf3ff8a66d9fd6b2ab2f
uni-koeln.deTXT0adobe-idp-site-verification=4aec6dd94028767a1112cc5f6e09e54597a8b368698e3090e7942e6ff298e732
uni-koeln.deTXT0brevo-code:9aabfa1918b1ee91863be44df6d4b941
uni-koeln.deTXT0google-site-verification=slKdECUuuJ-OuRi4ydQier-7Oj-2Tg_VJyA_kXlUPcU
uni-koeln.deTXT0apple-domain-verification=XscpNBzRkbfzubTd
uni-koeln.deTXT0v=spf1 ip4:134.95.0.0/16 ip4:109.69.68.140 ip6:2a00:a200::/48 include:agenturserver.de ?all
uni-koeln.deTXT0apple-domain-verification=fP2uzfO72ptimR1d
uni-koeln.deTXT0MS=3440AC9067529743C07C50066FE452F078A8500F
www.uni-koeln.deAAAA02a00:a200:0:2::80
www.uni-koeln.deCNAME0gemini.rrz.uni-koeln.de
www.uni-koeln.deA0134.95.81.52

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About DNS Records

DNS (Domain Name System) records are instructions that provide information about a domain, including its IP addresses, mail servers, and other services. Common record types include:

  • SOA (Start of Authority) - Contains administrative information about the zone
  • NS (Nameserver) - Specifies authoritative nameservers for the domain
  • A (Address) - Maps a domain to an IPv4 address
  • AAAA - Maps a domain to an IPv6 address
  • CNAME (Canonical Name) - Creates an alias pointing to another domain
  • MX (Mail Exchange) - Specifies mail servers for the domain