gerdsen.dk is a .dk domain served by 2 nameservers (ns1.dns.services, ns2.dns.services). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 144.76.135.224 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by eu-esec-01.heimdalsecurity.com, eu-esec-02.heimdalsecurity.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 144.76.135.224 | 600s | static01.bubbleweb.dk | AS24940 | Hetzner Online GmbH | 144.76.0.0/16 | 🇩🇪 Germany | Falkenstein |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 1 | 0 | 443 | exch.httpscan.dk |
| TXT Record |
|---|
| google-site-verification=2faqUx7f2qP1FqZbXeLDJo8zcs3k35i0ZhQ5C-EXM-U |
| v=spf1 include:spf.httpscan.dk -all |
| Policy | Record (gerdsen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.httpscan.dk -all |
| Policy | Record (_dmarc.gerdsen.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:administrator@httpscan.dk; pct=100; |
| www CNAME | gerdsen.dk (all on gerdsen.dk) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | 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| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.eu-esec-01.heimdalsecurity.com | DANE-EE · SPKI · SHA-256 | 2E8933DD6DB99304A5A9D5C4ECDE7B8E… |
| SMTP _25._tcp.eu-esec-02.heimdalsecurity.com | DANE-EE · SPKI · SHA-256 | 2E8933DD6DB99304A5A9D5C4ECDE7B8E… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2022020831 |
| Primary NS (MNAME) | ns1.dns.services |
| Responsible (RNAME) | post@dns.services |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 1814400s |
| Minimum (neg-cache TTL) | 7200s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-24 15:41:30 | 855ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-07 19:06:41 | 1134ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-26 10:27:51 | 6184ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-23 16:52:05 | 903ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 17:57:02 | 1207ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-19 14:36:27 shown | 632ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 09:41:35 | 810ms | 2 NS 1 A 2 MX | 🔒 Secure |