sthomassen.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 8 March 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by ydun.lavetidanmark.dk. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | ydun.lavetidanmark.dk | 2.59.186.106 | ydun.slsik.dk | AS198473 KIKKENBORG FIBER & IT ApS |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | ydun.lavetidanmark.dk → 2.59.186.106 |
| 🔶 Autoconfig | ydun.lavetidanmark.dk → 2.59.186.106 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 0 | 443 | ydun.lavetidanmark.dk |
| TXT Record |
|---|
| v=spf1 a mx -all |
| Policy | Record (sthomassen.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx -all |
| Policy | Record (_dmarc.sthomassen.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; fo=0; adkim=r; aspf=r; pct=100; rf=afrf; sp=reject |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves sthomassen.dk: no address www.sthomassen.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | 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: 2/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026060300 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2026-03-08 |
| Expires | 2027-03-07 (132d) |
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).
| Domain | Registrar |
|---|---|
| knitpro.dk | Simply.com A/S |
| mikkelholst.dk | Simply.com A/S |
| snirke.dk | Punktum dk A/S (direct) |
| totalweb.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-22 09:21:19 | 447ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-13 13:54:29 | 1614ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-03 18:43:25 | 535ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-02 18:41:31 | 1023ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-25 17:17:22 | 452ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-12 05:23:16 | 440ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-24 21:38:11 shown | 2120ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-17 15:03:49 | 545ms | 3 NS 0 A 1 MX | 🔒 Secure |