DNS Record Lookup

Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain

Hosting & Network

rug.nl runs on AS1103, with email via Google Workspace.

Hosting network
AS1103AS1103
Managed DNS
Self-hosted / other
Email
Google Workspace
IPv6 (AAAA)
Enabled
CAA pinning
None

Sits alongside 557 other sites on AS1103. Stable here since we started watching (Jul 18, 2026).

The apex and www are the same hosting — the apex via A records, www via a CNAME to production.ucms.rug.nl.

DNS Records for rug.nl

HostnameTypeTTLPriorityContent
rug.nlA0129.125.2.51
rug.nlNS0dns3.rug.nl
rug.nlNS0dns1.rug.nl
rug.nlNS0dns2.rug.nl
rug.nlNS0ns1.surfnet.nl
rug.nlNS0ns2.surfnet.nl
rug.nlMX020ALT2.ASPMX.L.GOOGLE.COM
rug.nlMX020ALT1.ASPMX.L.GOOGLE.COM
rug.nlMX010ASPMX.L.GOOGLE.COM
rug.nlMX030ASPMX3.GOOGLEMAIL.COM
rug.nlMX030ASPMX2.GOOGLEMAIL.COM
rug.nlSOA600ns.rug.nl hostmaster.nic.rug.nl 2026071500 14400 3600 1209600 600
rug.nlAAAA02001:610:1a08:292:129:125:2:51
rug.nlTXT0google-site-verification=pMjlXqlOTWrDjxV9AoW_MGyuGOV3lEAsQ7__vv525Ag
rug.nlTXT0mistral-domain-verification=139d17efc022c67581effa2fc6e0bb747d0c9456
rug.nlTXT0bw=7iePWW2zaVtqaRhZZjRWUu985gQ1Ia26nUAJ3BDXMYBp
rug.nlTXT0University of Groningen
rug.nlTXT0HARICA-iXUSYZelD4KghRtTA8V
rug.nlTXT0MS=ms97484282
rug.nlTXT0v=spf1 include:spf1.rug.nl include:spf2.rug.nl include:spf3.rug.nl include:spf4.rug.nl ~all
rug.nlTXT0google-site-verification=LzOS5q7nSbDRZFZ0FMFKbWSvsfDE8bL861TAh-czT7k
www.rug.nlA0129.125.2.51
www.rug.nlAAAA02001:610:1a08:292:129:125:2:51
www.rug.nlCNAME0production.ucms.rug.nl

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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