computerscience.dk is a .dk domain served by 4 nameservers (arthur.cutisan.dk, bes.cutisan.dk, merlin.cutisan.dk and 1 more). It was registered on 3 October 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by merlin.cutisan.dk, thoth.cutisan.net. 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.
| TXT Record |
|---|
| v=spf1 include:_spf.myemail.dk -all |
| Policy | Record (computerscience.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.myemail.dk -all |
| Policy | Record (_dmarc.computerscience.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; pct=100; fo=1; ri=86400; rua=mailto:postmaster@computerscience.dk; ruf=mailto:postmaster@computerscience.dk |
| Check | Result |
|---|---|
| Status | 🧪 Testing |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✓ Valid |
| Mode | testing |
| Policy ID | 202505200001 |
| max_age | 86400s |
| Policy MX | merlin.cutisan.dk, thoth.cutisan.net |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:postmaster@myemail.dk |
| www CNAME | arthur.cutisan.dk (all on cutisan.dk) |
| www vs bare domain | Only www resolves computerscience.dk: no address (all like this)www.computerscience.dk: 80.198.171.106 2001:470:28:2f7:0:1:0:6 (AS3292 AS6939) |
| Wildcard | No |
| Denial of existence | NSEC3 · 10 iterations · 16-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| 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.merlin.cutisan.dk | DANE-TA · SPKI · SHA-512 | 115F68647DC892788AD8BE021FDEA758… |
| SMTP _25._tcp.merlin.cutisan.dk | DANE-TA · SPKI · SHA-256 | 6EBCEFB4210B088654A38B03FEA3D7D1… |
| SMTP _25._tcp.merlin.cutisan.dk | DANE-TA · SPKI · SHA-512 | 8B0A0CBBE72552E12AB3C82CF13F4793… |
| SMTP _25._tcp.merlin.cutisan.dk | DANE-TA · SPKI · SHA-256 | B3FB5D00E994CDDF2CC9A4EEA9F806BC… |
| SMTP _25._tcp.thoth.cutisan.net | DANE-TA · SPKI · SHA-256 | 2E8307068B6DB620E4A39D068B5DEE5D… |
| SMTP _25._tcp.thoth.cutisan.net | DANE-TA · SPKI · SHA-256 | 9D637B3D27A9E570D07607B9CCADB80A… |
| SMTP _25._tcp.thoth.cutisan.net | DANE-TA · SPKI · SHA-512 | A90D0606D641B94AFF27371F57E0BE27… |
| SMTP _25._tcp.thoth.cutisan.net | DANE-TA · SPKI · SHA-512 | B71DB2EF3A7AEC54F4651711B72821EC… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2025070593 |
| Primary NS (MNAME) | arthur.cutisan.dk |
| Responsible (RNAME) | postmaster@cutisan.dk |
| Refresh | 21600s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2000-10-03 |
| Expires | 2028-12-31 (806d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 19:15:54 | 3842ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-10-15 16:22:56 | 1085ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-10-11 09:48:50 | 4163ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-10-06 23:28:25 | 2505ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-10-02 20:42:50 | 2153ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-28 20:04:14 | 2741ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-27 19:52:50 | 2492ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-23 17:56:54 | 3040ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-19 21:55:09 | 9859ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-13 09:26:03 | 3687ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-06 08:01:26 | 3726ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-28 03:37:13 | 1807ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-27 01:52:52 | 7045ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-26 01:28:38 | 1377ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-18 11:16:05 | 3887ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-17 03:15:24 | 3742ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-10 07:48:58 | 6057ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-03 18:36:45 shown | 2944ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-22 16:10:45 | 9528ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-20 20:12:26 | 10855ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-16 12:06:18 | 13059ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-14 06:59:04 | 5172ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-06 02:35:51 | 7538ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-04 23:08:52 | 11152ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-02 11:22:35 | 25647ms | 4 NS 0 A 2 MX | 🔒 Secure |