casperjudson.dk is a .dk domain served by 2 nameservers (clarissa.ns.cloudflare.com, igor.ns.cloudflare.com). It was registered on 3 February 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.38.124 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route3.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 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 |
|---|---|---|---|---|---|---|---|
| 104.21.38.124 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.222.164 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 172.67.222.164 |
| 🔶 Autoconfig | 104.21.38.124 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::ac43:dea4 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3034::6815:267c | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.38.124,172.67.222.164 ech=AEX+DQBBwgAgACAfkzL2pc7gCXT2EyF0E2vlbWYDYeqwiJAt293mlzb3agAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:dea4,2606:4700:3034::6815:267c |
| TXT Record |
|---|
| v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (casperjudson.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.mx.cloudflare.net ~all |
| www | 104.21.38.124 172.67.222.164 2606:4700:3030::ac43:dea4 2606:4700:3034::6815:267c (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network casperjudson.dk: 104.21.38.124 172.67.222.164 2606:4700:3030::ac43:dea4 2606:4700:3034::6815:267c (AS13335) www.casperjudson.dk: 104.21.38.124 172.67.222.164 2606:4700:3030::ac43:dea4 2606:4700:3034::6815:267c (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 1/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.casperjudson.dk | 44QkucjrcDoV-fEaVoN3KhFbUJtVod2IRZAg2WAygZ0 |
| TXT | _acme-challenge.casperjudson.dk | UGbr4Y-FUiXTxfiNxlY3QIFq22ocA7PL1boJPSOAeS8 |
| 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 | 2417416848 |
| Primary NS (MNAME) | clarissa.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2014-02-03 |
| Expires | 2027-02-28 (132d) |
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 |
|---|---|
| cjsystems.dk | ONE.COM A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 14:02:00 | 1105ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-16 13:00:10 | 3204ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-15 11:34:26 | 1770ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-14 10:37:32 shown | 2534ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-14 07:29:02 | 2728ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-26 09:02:40 | 9971ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-17 23:20:44 | 4740ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-16 19:37:11 | 10556ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-15 14:23:34 | 6583ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-02 17:25:57 | 9606ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-17 12:36:36 | 1264ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-03 14:23:31 | 1590ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-28 17:20:03 | 3250ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-28 06:26:55 | 1677ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-25 09:41:18 | 1290ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-24 17:34:16 | 1030ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-20 20:12:58 | 959ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 22:26:47 | 2597ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-16 19:50:09 | 954ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-16 19:40:22 | 4412ms | 2 NS 2 A 2 MX | 🔓 Insecure |