semperdanica.dk is a .dk domain served by 2 nameservers (david.ns.cloudflare.com, mia.ns.cloudflare.com). It was registered on 10 February 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.23.24 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.23.24 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.208.113 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:1718 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3034::ac43:d071 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.23.24,172.67.208.113 ech=AEX+DQBBDwAgACCqEJqZk0o6GZfGhpWjWASi5+qUaIfPjD+uSWhrtL5qLQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:1718,2606:4700:3034::ac43:d071 |
| TXT Record |
|---|
| google-site-verification=2lnwrsPAGisr3Ny9F3IxDCvnrSUUjTNAk_se-i7bHSM |
| v=spf1 -all |
| Policy | Record (semperdanica.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.semperdanica.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:0ad00cb80ddd49459d903e2c5a9eeda9@dmarc-reports.cloudflare.net |
| p=none (monitor only) | v=DMARC1;p=none;sp=reject;pct=100;rua=mailto:0ad00cb80ddd49459d903e2c5a9eeda9@dmarc-reports.cloudflare.net;adkim=s;aspf=s |
| Flags | Tag | Value |
|---|---|---|
| 0 | iodef | semperdanicaguild@gmail.com |
| 0 | issue | comodoca.com |
| 0 | issue | digicert.com; cansignhttpexchanges=yes |
| 0 | issue | letsencrypt.org |
| 0 | issue | pki.goog; cansignhttpexchanges=yes |
| 0 | issue | ssl.com |
| 0 | issuewild | comodoca.com |
| 0 | issuewild | digicert.com; cansignhttpexchanges=yes |
| 0 | issuewild | letsencrypt.org |
| 0 | issuewild | pki.goog; cansignhttpexchanges=yes |
| 0 | issuewild | ssl.com |
| www CNAME | semperdanica.github.io (all on github.io) |
| www vs bare domain | Different networks semperdanica.dk: 104.21.23.24 172.67.208.113 2606:4700:3032::6815:1718 2606:4700:3034::ac43:d071 (AS13335) (all like this)www.semperdanica.dk: 185.199.108.153 185.199.109.153 185.199.110.153 185.199.111.153 (AS54113) |
| 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: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2417136782 |
| Primary NS (MNAME) | david.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 | 2003-02-10 |
| Expires | 2030-02-28 (1227d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-11 00:38:12 shown | 485ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-10-08 17:55:18 | 2252ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-30 13:21:58 | 544ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-26 00:32:01 | 2638ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-19 07:31:22 | 814ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-14 08:19:20 | 946ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-28 09:58:11 | 733ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-24 13:50:08 | 3121ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-10 17:44:17 | 3512ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-06 20:46:07 | 1523ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-17 09:34:54 | 983ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-07 00:01:51 | 1395ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-26 19:05:09 | 883ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-24 00:05:42 | 1160ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 17:57:36 | 948ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 12:00:41 | 1938ms | 2 NS 2 A 0 MX | 🔒 Secure |