klaus-jensen.dk is a .dk domain served by 2 nameservers (angela.ns.cloudflare.com, morgan.ns.cloudflare.com). It was registered on 2 February 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.10.224 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route2.mx.cloudflare.net, route1.mx.cloudflare.net and 1 more. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.10.224 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.164.139 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:ae0 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3034::ac43:a48b | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.10.224,172.67.164.139 ech=AEX+DQBB+gAgACBZ2Pee8zbDcxix3oMrLb658GNG7fAoVc4iO1pjgsNeXAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:ae0,2606:4700:3034::ac43:a48b |
| TXT Record |
|---|
| v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (klaus-jensen.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.mx.cloudflare.net ~all |
| www | 104.21.10.224 172.67.164.139 2606:4700:3032::6815:ae0 2606:4700:3034::ac43:a48b (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network klaus-jensen.dk: 104.21.10.224 172.67.164.139 2606:4700:3032::6815:ae0 2606:4700:3034::ac43:a48b (AS13335) www.klaus-jensen.dk: 104.21.10.224 172.67.164.139 2606:4700:3032::6815:ae0 2606:4700:3034::ac43:a48b (AS13335) |
| Wildcard | No |
DNS lookups: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| 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.route1.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| 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.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| 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… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| 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 | 2414834819 |
| Primary NS (MNAME) | angela.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2001-02-02 |
| 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).
| Domain | Registrar |
|---|---|
| kjn.dk | Punktum dk A/S (direct) |
| rubjergfyr.dk | Punktum dk A/S (direct) |
| stenbjerg-landingsplads.dk | Punktum dk A/S (direct) |
| us-jensen.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-25 12:12:12 shown | 2354ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-22 00:06:35 | 1218ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-19 11:05:52 | 2517ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-03 18:20:01 | 734ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-01 06:16:33 | 707ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-24 22:32:19 | 861ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-14 15:17:28 | 1743ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-12 20:57:47 | 1394ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-25 18:56:54 | 2644ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-25 06:33:36 | 1614ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-21 08:21:14 | 1944ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-15 12:37:42 | 1456ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-24 03:59:55 | 1387ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-21 23:22:05 | 1275ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-17 15:21:59 | 1318ms | 2 NS 2 A 3 MX | 🔓 Insecure |