tuks.dk is a .dk domain served by 2 nameservers (marvin.ns.cloudflare.com, mckenzie.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 86.52.25.164 is hosted by Sinal A/S (AS39642) in Denmark. Mail is handled by amir.mx.cloudflare.net, isaac.mx.cloudflare.net and 1 more. 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 |
|---|---|---|---|---|---|---|---|
| 86.52.25.164 | 300s | 86-52-25-164.norlyscustomer.net | AS39642 | Sinal A/S | 86.52.0.0/16 | 🇩🇰 Denmark | Svendborg |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 86.52.25.164 |
| 🔶 Autoconfig | 86.52.25.164 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| ::ffff:86.52.25.164 | 300s | — | AS39642 | Sinal A/S | — | 🇩🇰 Denmark | Svendborg |
| TXT Record |
|---|
| v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (tuks.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (_dmarc.tuks.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:per.a.jensen@opacia.dk |
| www | 86.52.25.164 ::ffff:86.52.25.164 (AS39642) (address records, no CNAME) |
| www vs bare domain | Same network tuks.dk: 86.52.25.164 ::ffff:86.52.25.164 (AS39642) www.tuks.dk: 86.52.25.164 ::ffff:86.52.25.164 (AS39642) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | Revoked (empty key) |
| dkim | — | Revoked (empty key) |
| k1 | — | Revoked (empty key) |
| — | Revoked (empty key) | |
| s1 | — | Revoked (empty key) |
| s2 | — | Revoked (empty key) |
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.amir.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.amir.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.amir.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.isaac.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.isaac.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.isaac.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.linda.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.linda.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.linda.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2416370806 |
| Primary NS (MNAME) | marvin.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-08 16:15:53 shown | 918ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-10-02 09:59:30 | 1184ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-30 09:50:08 | 1476ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-29 09:43:31 | 1547ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-28 08:52:15 | 1607ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-20 04:20:19 | 926ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-05 17:00:38 | 2868ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-13 06:35:23 | 2928ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-04 03:33:42 | 1452ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-20 13:23:21 | 1878ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-28 14:26:47 | 1166ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-23 15:36:34 | 1253ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-23 10:34:26 | 1194ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 13:39:53 | 5128ms | 2 NS 1 A 3 MX | 🔒 Secure |