kastrup.dk is a .dk domain served by 4 nameservers (ns1-03.azure-dns.com, ns2-03.azure-dns.net, ns3-03.azure-dns.org and 1 more). It was registered on 12 February 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.46.38.245 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by antispam.cph.dk. 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 |
|---|---|---|---|---|---|---|---|
| 104.46.38.245 | 60s | — | AS8075 | Microsoft Corporation | 104.40.0.0/13 | 🇳🇱 The Netherlands | Amsterdam |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | antispam.cph.dk | 193.110.199.180 | antispam.cph.dk | AS203825 Copenhagen Airports A/S |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (kastrup.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.kastrup.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc-rua@cph.dk,mailto:m81dcjad@ag.eu.dmarcian.com; ruf=mailto:dmarc-ruf@cph.dk; fo=1; |
| www CNAME | www.kastrup.dk.edgesuite.net (all on edgesuite.net) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| 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 | 103 |
| Primary NS (MNAME) | ns1-03.azure-dns.com |
| Responsible (RNAME) | hostmaster@cph.dk |
| Refresh | 3600s |
| Retry | 600s |
| Expire | 259200s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1997-02-12 |
| Expires | 2031-03-31 (1626d) |
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 |
|---|---|---|---|
| 2026-09-29 18:27:30 | 606ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 18:41:03 | 606ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-13 20:10:31 | 584ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-01 03:35:38 shown | 587ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 15:38:46 | 2683ms | 4 NS 2 A 1 MX | 🔓 Insecure |