henningstaerk.dk is a .dk domain served by 2 nameservers (gerald.ns.cloudflare.com, tina.ns.cloudflare.com). It was registered on 8 February 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.4.26 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route3.mx.cloudflare.net, route2.mx.cloudflare.net and 1 more. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.4.26 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.131.147 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:41a | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::ac43:8393 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.4.26,172.67.131.147 ech=AEX+DQBBuwAgACD21IhQeEK4/7gRMbLnoxT81j0DcJMO0nGnXgommntbPgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:41a,2606:4700:3035::ac43:8393 |
| TXT Record |
|---|
| v=spf1 include:_spf.mx.cloudflare.net include:_spf.google.com include:server1.staerk.cloud -all |
| Policy | Record (henningstaerk.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.mx.cloudflare.net include:_spf.google.com include:server1.staerk.cloud -all |
| Policy | Record (_dmarc.henningstaerk.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:77bbc3e187544368b17c00a0a52ac1fe@dmarc-reports.cloudflare.net |
| www | 104.21.4.26 172.67.131.147 2606:4700:3030::6815:41a 2606:4700:3035::ac43:8393 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network henningstaerk.dk: 104.21.4.26 172.67.131.147 2606:4700:3030::6815:41a 2606:4700:3035::ac43:8393 (AS13335) www.henningstaerk.dk: 104.21.4.26 172.67.131.147 2606:4700:3030::6815:41a 2606:4700:3035::ac43:8393 (AS13335) |
| 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: 3/10 · policy: -all
| 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 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| 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.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2411001249 |
| Primary NS (MNAME) | gerald.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Domænehajen ApS |
| Registered | 2000-02-08 |
| Expires | 2029-03-31 (895d) |
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 |
|---|---|---|---|
| 2026-10-14 14:10:52 | 2097ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-09-29 23:59:07 | 719ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-09-28 20:30:12 | 1683ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-09-25 19:50:11 | 877ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-09-23 00:25:51 | 1125ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-09-07 18:56:16 | 835ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-09-04 10:36:45 | 1207ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-27 21:16:15 | 853ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-25 04:50:07 | 1132ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-21 12:53:27 | 3801ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-09 08:45:55 | 2234ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-02 05:23:17 shown | 1742ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-07-11 04:52:28 | 3519ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-06-23 23:55:04 | 2062ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-06-17 11:21:15 | 1649ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-06-17 11:19:54 | 1076ms | 2 NS 2 A 3 MX | 🔒 Secure |