sktst.dk is a .dk domain served by 6 nameservers (df-ns01.skat.dk, df-ns02.skat.dk, df-ns03.skat.dk and 3 more). It was registered on 22 January 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 150.171.109.194 is hosted by Microsoft Corporation (AS8075) in United States. Mail is handled by sktst-dk.t-v1.mx.microsoft. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 150.171.109.194 | 60s | — | AS8075 | Microsoft Corporation | 150.171.64.0/18 | 🇺🇸 United States | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 0 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| _globalsign-domain-verification=tE6Xmj13CMHDFE4na8CwGoORNxcAh07ojWIFLC0Z2b |
| apple-domain-verification=ZUldy73ccT5PV5AM |
| google-site-verification=gOhi2YIRdS8RrLAQ82GKwjMW65keKoh76aZQsY6E-q8 |
| miro-verification=ab894f51da2ea76d1e8fae73335bd7c2b992e678 |
| MS=ms83924113 |
| SKAT |
| skatteforvaltningen.azurewebsites.net |
| Skattestyrelsen |
| v=spf1 ip4:147.29.150.227 ip4:185.150.75.24 ip4:207.54.71.162 ip4:207.54.72.99 include:spf.protection.outlook.com include:_spf.anpdm.com -all |
| Policy | Record (sktst.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:147.29.150.227 ip4:185.150.75.24 ip4:207.54.71.162 ip4:207.54.72.99 include:spf.protection.outlook.com include:_spf.anpdm.com -all |
| Policy | Record (_dmarc.sktst.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:fd0c97ad@in.mailhardener.com; ruf=mailto:fd0c97ad@in.mailhardener.com |
| Check | Result |
|---|---|
| Status | 🔒 Enforce |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✓ Valid |
| Mode | enforce |
| Policy ID | 20190601000000Z |
| max_age | 1209600s |
| Policy MX | sktst-dk.t-v1.mx.microsoft |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:tlsrpt@in.mailhardener.com |
| www CNAME | sktst-prod-h6asgcewguf4dpe8.a02.azurefd.net (all on azurefd.net) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 2/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.sktst-dk.t-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | C1AD7778796D20BCA65C889A26550211… |
| SMTP _25._tcp.sktst-dk.t-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 54883CC5F1849331E6BF5002C3129D20… |
| SMTP _25._tcp.sktst-dk.t-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | EA7A25255D111FC3CE4CB8FABE3ADF9C… |
| SMTP _25._tcp.sktst-dk.t-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 803F7447CC75B208DBCA042346F5D8DF… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026118506 |
| Primary NS (MNAME) | df-ns01.skat.dk |
| Responsible (RNAME) | hostmaster@csc.dk |
| Refresh | 14400s |
| Retry | 7200s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2018-01-22 |
| Expires | 2027-07-31 (286d) |
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 12:45:47 shown | 1261ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-16 12:04:54 | 645ms | 6 NS 1 A 1 MX | ❓ Unknown |
| 2026-10-15 11:01:57 | 9139ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-14 07:29:19 | 601ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-13 07:22:52 | 6162ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-13 07:19:24 | 2080ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-12 05:18:46 | 1565ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-11 04:49:13 | 1238ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-10 00:07:24 | 538ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 10:36:01 | 1239ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-07 10:27:07 | 575ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-06 08:35:56 | 4222ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-05 07:02:28 | 1057ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-04 06:47:54 | 3124ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 06:43:25 | 735ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 06:41:40 | 2478ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 06:27:11 | 1073ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 06:20:36 | 1122ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 06:13:22 | 1062ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 05:44:36 | 987ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 05:24:32 | 1375ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 05:15:54 | 945ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 05:05:50 | 1236ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 04:42:38 | 971ms | 6 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-21 07:26:17 | 728ms | 6 NS 1 A 1 MX | 🔒 Secure |