koster-andersen.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx01.mail.icloud.com, mx02.mail.icloud.com. The zone is DNSSEC-signed and validates, has no 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.
| TXT Record |
|---|
| apple-domain=yo20VzUwu0gkX7nW |
| v=spf1 include:icloud.com ~all |
| Policy | Record (koster-andersen.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:icloud.com ~all |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves koster-andersen.dk: no address www.koster-andersen.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 |
DNS lookups: 5/10 · 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 | 2026010705 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 10:06:11 | 689ms | 3 NS 0 A 2 MX | 🔒 Secure |
| 2026-10-02 21:37:07 | 927ms | 3 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-23 18:44:38 | 594ms | 3 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-28 06:33:32 | 1374ms | 3 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-20 04:46:58 | 761ms | 3 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-19 22:58:40 | 11572ms | 3 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-18 03:33:31 shown | 3075ms | 3 NS 0 A 2 MX | 🔒 Secure |