au.dk is a .dk domain served by 2 nameservers (ns3.au.dk, ns4.au.dk). It was registered on 2 February 1996 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns3.au.dk | 20.73.178.34 | ns3.au.dk | AS8075 Microsoft Corporation |
| ns4.au.dk | 185.45.20.154 | ns4.au.dk | AS62138 Aarhus Universitet |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (au.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.au.dk) |
|---|---|
| p=reject | v=DMARC1;p=reject;pct=100;aspf=r; |
| www CNAME | www.au.dk.cdn.cloudflare.net (all on cloudflare.net) |
| www vs bare domain | Different networks au.dk: 185.45.20.48 (AS62138) (all like this)www.au.dk: 104.20.17.106 172.66.153.212 2606:4700:10::6814:116a 2606:4700:10::ac42:99d4 (AS13335) |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u5089797.wl048.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u5089797.wl048.sendgrid.net | RSA · ~1024 bit below 2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2012073459 |
| Primary NS (MNAME) | infobloxgm3.au.dk |
| Responsible (RNAME) | staff@au.dk |
| Refresh | 3600s |
| Retry | 360s |
| Expire | 3600000s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1996-02-02 |
| Expires | 2027-03-31 (165d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
Showing 100 of 563.
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 14:18:15 | 1863ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-15 12:41:53 | 1560ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-14 12:02:09 | 2189ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-13 09:55:29 | 609ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-12 08:01:34 | 1178ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-11 07:03:27 | 1042ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-10 05:45:36 | 1008ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-09 03:08:20 | 3158ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 03:03:34 | 606ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-07 15:52:29 | 3200ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-06 15:21:13 | 2907ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-05 14:15:33 | 2837ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-04 13:48:07 | 2020ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 13:45:41 | 1210ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 13:44:02 | 2483ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 13:39:58 | 2808ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 13:36:32 | 853ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 17:21:19 | 1099ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 19:54:29 | 941ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 19:37:34 | 978ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 19:25:58 | 603ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-26 01:12:21 | 1245ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 01:06:59 shown | 461ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-24 07:18:01 | 879ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 14:42:37 | 2013ms | 2 NS 1 A 1 MX | 🔒 Secure |