su-tek.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 29 April 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by thoth.cutisan.net, merlin.cutisan.dk. The zone is of unknown DNSSEC status, 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 86400s | thoth.cutisan.net | 2001:470:28:404:0:6:0:2 90.185.206.63 |
thoth.cutisan.net thoth.cutisan.net |
AS6939 Hurricane Electric LLC AS203953 Hiper A/S |
| 20 | 86400s | merlin.cutisan.dk | 2001:470:28:2f7:0:1:0:1 80.198.171.101 |
merlin.cutisan.dk merlin.cutisan.dk |
AS6939 Hurricane Electric LLC AS3292 TDC Holding A/S |
| TXT Record |
|---|
| v=spf1 include:_spf.myemail.dk -all |
| Policy | Record (su-tek.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.myemail.dk -all |
| Policy | Record (_dmarc.su-tek.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; pct=100; fo=1; ri=86400; rua=mailto:postmaster@su-tek.dk; ruf=mailto:postmaster@su-tek.dk |
| www | SERVFAIL |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.merlin.cutisan.dk | DANE-TA · SPKI · SHA-256 | B3FB5D00E994CDDF2CC9A4EEA9F806BC… |
| SMTP _25._tcp.merlin.cutisan.dk | DANE-TA · SPKI · SHA-256 | 6EBCEFB4210B088654A38B03FEA3D7D1… |
| SMTP _25._tcp.merlin.cutisan.dk | DANE-TA · SPKI · SHA-512 | 115F68647DC892788AD8BE021FDEA758… |
| SMTP _25._tcp.merlin.cutisan.dk | DANE-TA · SPKI · SHA-512 | 8B0A0CBBE72552E12AB3C82CF13F4793… |
| 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… |
| SMTP _25._tcp.thoth.cutisan.net | DANE-TA · SPKI · SHA-256 | 2E8307068B6DB620E4A39D068B5DEE5D… |
| Check | Result |
|---|---|
| Validation Status | ❓ Unknown |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | broken trust chain resolving 'su-tek.dk/A/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2023032763 |
| Primary NS (MNAME) | thoth.cutisan.net |
| 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 | 2015-04-29 |
| Expires | 2031-04-30 (1655d) |
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 |
|---|---|---|---|
| 2026-10-17 23:21:19 | 3106ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-10-16 22:42:30 | 2156ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-10-15 21:52:44 | 3722ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-10-14 20:08:07 | 754ms | 4 NS 0 A 2 MX | ❓ Unknown |
| 2026-10-13 19:07:03 | 8185ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-10-12 17:33:45 | 2186ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-10-11 15:10:07 | 4275ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-10-09 12:36:00 | 1069ms | 4 NS 0 A 2 MX | ❓ Unknown |
| 2026-10-09 01:57:14 | 7848ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-10-08 01:54:32 | 4571ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-10-07 01:47:21 | 7057ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-10-03 00:22:42 shown | 792ms | 4 NS 0 A 2 MX | ❓ Unknown |
| 2026-10-01 20:09:44 | 938ms | 4 NS 0 A 2 MX | ❓ Unknown |
| 2026-09-30 19:54:20 | 4264ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-29 19:43:31 | 2493ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-28 19:28:20 | 6240ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-27 19:18:38 | 2158ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-26 19:06:38 | 2694ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-25 18:50:22 | 2564ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-24 18:41:12 | 3624ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-23 17:47:33 | 2605ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-18 22:41:20 | 11392ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-11 20:53:39 | 3953ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-07 10:58:18 | 4600ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-06 08:26:16 | 5113ms | 4 NS 0 A 0 MX | ⚠️ Bogus |