heimdal-thy.dk is a .dk domain served by 2 nameservers (howard.ns.cloudflare.com, sarah.ns.cloudflare.com). It was registered on 14 July 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.71.47 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.notahero.dk. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 104.21.71.47 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.169.121 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.notahero.dk | 91.98.195.209 | mail.notahero.dk | AS24940 Hetzner Online GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.71.47 |
| 🔶 Autoconfig | 104.21.71.47 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::ac43:a979 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::6815:472f | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.71.47,172.67.169.121 ech=AEX+DQBBPwAgACB+ZSFBfmkSzryXVD6dWG8NWojOwPRbQ4FOg8pVGCZTQQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:a979,2606:4700:3035::6815:472f |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | cpanelemaildiscovery.cpanel.net |
| TXT Record |
|---|
| google-site-verification=mGvYWfdl4EGXZPd-yhcKuSjPHja4i0Rmc6EB45uewr8 |
| v=spf1 mx -all |
| Policy | Record (heimdal-thy.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx -all |
| Policy | Record (_dmarc.heimdal-thy.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:mads@heimdal-thy.dk; ruf=mailto:mads@heimdal-thy.dk; rf=afrf; sp=quarantine; fo=1; pct=100; adkim=s; aspf=s |
| www | Exists, no address |
| www vs bare domain | www does not resolve heimdal-thy.dk: 104.21.71.47 172.67.169.121 2606:4700:3033::ac43:a979 2606:4700:3035::6815:472f (AS13335) (all like this)www.heimdal-thy.dk: no address |
| 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 |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.heimdal-thy.dk | qQNDianJ324ZbYgZYTejYt9JIKATpsAKpIotiNqVh9Y |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2417216711 |
| Primary NS (MNAME) | howard.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 | 2016-07-14 |
| Expires | 2027-07-31 (287d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-11 21:33:30 shown | 3751ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 15:18:59 | 1145ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 07:26:59 | 830ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-18 07:38:43 | 2532ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-06 22:45:36 | 1704ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-29 01:29:36 | 1261ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-24 23:34:37 | 2817ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-21 18:25:08 | 1259ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-07 21:05:18 | 1641ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-25 17:13:27 | 10006ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-08 18:36:55 | 1239ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-22 20:12:46 | 1029ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 11:21:57 | 1156ms | 2 NS 2 A 1 MX | ⚠️ Bogus |
| 2026-06-17 11:12:33 | 921ms | 2 NS 2 A 1 MX | 🔓 Insecure |