seat-holbaek.dk is a .dk domain served by 4 nameservers (ns1-02.azure-dns.com, ns2-02.azure-dns.net, ns3-02.azure-dns.org and 1 more). It was registered on 27 February 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.249.218.21 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by seatholbaek-dk01b.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 195.249.218.21 | 3600s | — | AS3292 | TDC Holding A/S | 195.249.0.0/16 | 🇩🇰 Denmark | Copenhagen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| 🔶 Autoconfig | forhandlerinternet.semler.dk → 195.249.218.21 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| v=spf1 mx a ip4:195.249.218.0/24 ip4:20.107.82.163/32 include:mail.zendesk.com include:spf.protection.outlook.com include:_spf.salesforce.com ~all |
| Policy | Record (seat-holbaek.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx a ip4:195.249.218.0/24 ip4:20.107.82.163/32 include:mail.zendesk.com include:spf.protection.outlook.com include:_spf.salesforce.com ~all |
| Policy | Record (_dmarc.seat-holbaek.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:tepx02da@ag.eu.dmarcadvisor.com; ruf=mailto:tepx02da@fr.eu.dmarcadvisor.com |
| www CNAME | forhandlerinternet.semler.dk (all on semler.dk) → 195.249.218.21 (AS3292) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-seatholbaek-dk01b._domainkey.semler.onmicrosoft.com | 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: 6/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.seat-holbaek.dk | forhandlerinternet.semler.dk |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 42 |
| Primary NS (MNAME) | ns1-02.azure-dns.com |
| Responsible (RNAME) | dnsadmin@kmd.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 43200s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2001-02-27 |
| Expires | 2027-03-31 (156d) |
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).
Showing 100 of 581.
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-25 16:18:35 | 734ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-03 04:41:52 | 1102ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-29 21:22:33 | 917ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-27 17:54:35 | 1361ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-22 07:21:47 | 1072ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-27 20:48:36 shown | 1223ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 21:58:26 | 1692ms | 4 NS 1 A 1 MX | 🔓 Insecure |