korf.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 11 March 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by korf-dk.mail.protection.outlook.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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| TXT Record |
|---|
| MS=ms81544844 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (korf.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www CNAME | ywclust1.cybercity.dk (all on cybercity.dk) ⚠ Dangling: the CNAME target does not exist. If that name can be claimed (an unregistered domain, or a free name on a hosting platform), whoever claims it controls www.korf.dk |
| www vs bare domain | Neither resolves korf.dk: no address www.korf.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · 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 | 2026032401 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1997-03-11 |
| Expires | 2027-03-31 (157d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-08 01:44:48 | 1370ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-03 00:26:36 | 2518ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-23 21:20:06 | 975ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-26 10:05:38 | 1209ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-21 05:08:06 | 5983ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-25 23:44:49 | 715ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-20 19:43:43 | 1292ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-20 18:24:51 | 1181ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 08:54:57 shown | 7143ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-18 08:12:40 | 937ms | 2 NS 0 A 1 MX | 🔒 Secure |