ulrik.dk is a .dk domain served by 2 nameservers (rommy.ns.cloudflare.com, suzanne.ns.cloudflare.com). It was registered on 30 January 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.43.91 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route1.mx.cloudflare.net, route2.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 |
|---|---|---|---|---|---|---|---|
| 104.21.43.91 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.177.107 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:2b5b | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3032::ac43:b16b | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.43.91,172.67.177.107 ech=AEX+DQBBOQAgACDReRiOW+HwoQUTXzsusmUib7wRjR/raK7KozQJ3xIlTQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:2b5b,2606:4700:3032::ac43:b16b |
| TXT Record |
|---|
| v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (ulrik.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.mx.cloudflare.net ~all |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve ulrik.dk: 104.21.43.91 172.67.177.107 2606:4700:3031::6815:2b5b 2606:4700:3032::ac43:b16b (AS13335) (all like this)www.ulrik.dk: no address |
| 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 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| 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.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.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| 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 | 2410717009 |
| Primary NS (MNAME) | rommy.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 | 1998-01-30 |
| Expires | 2027-03-31 (162d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-26 10:47:40 | 1629ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-23 11:55:52 | 1020ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-21 06:53:43 | 1029ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-18 07:59:44 | 2583ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-04 07:53:05 | 832ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-27 12:50:40 shown | 1049ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-26 03:19:37 | 1014ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-31 22:42:39 | 2219ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-23 09:56:07 | 10019ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-17 05:57:26 | 2760ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-15 21:58:51 | 1753ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-13 04:03:10 | 9576ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-04 13:18:22 | 4079ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-26 23:22:53 | 2470ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-25 16:54:21 | 2666ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-19 13:17:34 | 5855ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-18 04:21:57 | 1157ms | 2 NS 2 A 3 MX | 🔓 Insecure |