gotu.dk is a .dk domain served by 4 nameservers (ns101.cloudns.net, ns103.cloudns.net, pns102.cloudns.net and 1 more). It was registered on 16 February 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.160.30.86 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by anon.cephalopo.net, sat1.cephalopo.net. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 93.160.30.86 | 3600s | anon.cephalopo.net | AS3292 | TDC Holding A/S | 93.160.0.0/14 | 🇩🇰 Denmark | Frederiksberg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 86400s | anon.cephalopo.net | 93.160.30.86 | anon.cephalopo.net | AS3292 TDC Holding A/S |
| 15 | 86400s | sat1.cephalopo.net | 2a03:6000:6f70:631::234 46.23.91.234 |
sat1.cephalopo.net sat1.cephalopo.net |
AS60131 High5! B.V. AS60131 High5! B.V. |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 93.160.30.86 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a03:6000:6f70:631::234 | 3600s | sat1.cephalopo.net | AS60131 | High5! B.V. | 2a03:6000:0:0:0:0:0:0/29 | 🇳🇱 The Netherlands | — |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | autodiscover.gotu.dk |
| _autodiscover._tcp | 0 | 0 | 80 | autodiscover.gotu.dk |
| _imap._tcp | 0 | 0 | 143 | mail.gotu.dk |
| _imaps._tcp | 0 | 0 | 993 | mail.gotu.dk |
| TXT Record |
|---|
| google-site-verification=CQIx1dG_nBJgvJT08X2QJEPUKVz8eBHPJqHU1chvKGs |
| v=spf1 mx ~all |
| Policy | Record (gotu.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx ~all |
| Policy | Record (_dmarc.gotu.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc-aggregate@cephalopo.net,mailto:dmarc@1tyz69qz.uriports.com; ruf=mailto:dmarc-forensic@cephalopo.net,mailto:dmarc@1tyz69qz.uriports.com; sp=reject; adkim=r; aspf=r; fo=1 |
| Check | Result |
|---|---|
| Status | 🔒 Enforce |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✓ Valid |
| Mode | enforce |
| Policy ID | 20260607091500 |
| max_age | 86400s |
| Policy MX | anon.cephalopo.net, sat1.cephalopo.net |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:tlsrpt@cephalopo.net, mailto:tlsrpt@1tyz69qz.uriports.com |
| Flags | Tag | Value |
|---|---|---|
| 0 | iodef | mailto:security@gotu.dk |
| 0 | issue | letsencrypt.org |
| 0 | issue | sectigo.com |
| www CNAME | gotu.dk (all on gotu.dk) |
| www vs bare domain | Same network gotu.dk: 93.160.30.86 2a03:6000:6f70:631::234 (AS3292 AS60131) www.gotu.dk: 93.160.30.86 2a03:6000:6f70:631::234 (AS3292 AS60131) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt · opt-out RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| BIMI | v=BIMI1; l=https://gotu.dk/bimi-gotu.svg; |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~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: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.anon.cephalopo.net | DANE-EE · SPKI · SHA-256 | 5F3C288966872325E881F3CFC7129E3F… |
| SMTP _25._tcp.anon.cephalopo.net | DANE-EE · SPKI · SHA-256 | C466C70B2FEABFD8105D867B1A1B5C82… |
| HTTPS _443._tcp.gotu.dk | DANE-EE · SPKI · SHA-256 | 1789EC4AC7B0BA8866317EE070B8646D… |
| HTTPS _443._tcp.gotu.dk | DANE-EE · SPKI · SHA-256 | C466C70B2FEABFD8105D867B1A1B5C82… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026092802 |
| Primary NS (MNAME) | ns101.cloudns.net |
| Responsible (RNAME) | admin@cephalopo.net |
| Refresh | 7200s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | NETIM |
| Registered | 2004-02-16 |
| Expires | 2027-02-28 (134d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-29 20:32:24 shown | 3446ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-28 18:54:47 | 6227ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-23 17:53:42 | 11977ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-09 08:29:48 | 6559ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-06 01:13:40 | 3497ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-24 11:32:05 | 5552ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-13 05:44:15 | 11677ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-24 04:35:34 | 6722ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-07 03:27:13 | 19911ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-05 00:14:23 | 2364ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-03 13:14:47 | 9569ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-26 04:31:45 | 10246ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 05:08:04 | 1563ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-21 11:54:35 | 922ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 04:04:59 | 6780ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 09:22:34 | 1706ms | 4 NS 1 A 2 MX | 🔒 Secure |