karstenkorsholm.dk is a .dk domain served by 2 nameservers (dee.ns.cloudflare.com, sterling.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by route1.mx.cloudflare.net, route3.mx.cloudflare.net and 1 more. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| TXT Record |
|---|
| v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (karstenkorsholm.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (_dmarc.karstenkorsholm.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:rua@karstenkorsholm.dk |
| www | Exists, no address |
| www vs bare domain | Neither resolves karstenkorsholm.dk: no address www.karstenkorsholm.dk: no address |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2417413906 |
| Primary NS (MNAME) | dee.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 13:27:44 shown | 952ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-09-30 16:10:38 | 1006ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-09-30 04:57:00 | 4059ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-09-29 04:46:35 | 1011ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-09-22 20:40:16 | 1534ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-08-28 06:19:28 | 3040ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-08-27 06:28:00 | 774ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-08-16 01:33:57 | 10806ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-08-03 16:16:21 | 1640ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-08-02 05:05:10 | 9424ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-07-14 08:42:06 | 1766ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-29 02:52:08 | 1159ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-27 10:30:02 | 1248ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-27 05:55:06 | 2341ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-24 21:31:59 | 1389ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-18 16:53:47 | 1653ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-17 19:55:05 | 1282ms | 2 NS 0 A 3 MX | 🔓 Insecure |