teitgen.dk is a .dk domain served by 2 nameservers (lucy.ns.cloudflare.com, micah.ns.cloudflare.com). It was registered on 14 December 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.53.207 | 300s | — | AS13335 | — | — | — | — |
| 172.67.218.180 | 300s | — | AS13335 | — | — | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:35cf | 300s | — | AS13335 | — | — | — | — |
| 2606:4700:3032::ac43:dab4 | 300s | — | AS13335 | — | — | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.53.207,172.67.218.180 ech=AEX+DQBBKgAgACDIjZZ8c5lFDU5IzMo0uf5xMkpIjtshrETGixZHNSoUaAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:35cf,2606:4700:3032::ac43:dab4 |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (teitgen.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.teitgen.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:2884e1bd6f3a4bc89fea9eb79e03562f@dmarc-reports.cloudflare.net; |
| www | 104.21.53.207 172.67.218.180 2606:4700:3031::6815:35cf 2606:4700:3037::ac43:dab4 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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 | 2407336192 |
| Primary NS (MNAME) | lucy.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 | 2016-12-14 |
| Expires | 2026-12-31 (72d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-19 11:23:56 | 609ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-10-16 10:26:14 | 2268ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-10-09 14:29:08 | 454ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-25 07:42:57 | 612ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-07 06:10:22 | 1781ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-18 01:01:06 | 1084ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-09 22:10:57 | 890ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-15 15:23:54 | 734ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-03 08:14:50 | 760ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-26 09:59:50 | 773ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-24 15:29:35 | 812ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-23 11:56:58 | 3040ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-22 10:43:31 | 984ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 19:53:49 | 1486ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-20 02:09:23 shown | 3061ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-17 19:13:06 | 1086ms | 2 NS 2 A 0 MX | 🔒 Secure |