theilgaardjensen.dk is a .dk domain served by 3 nameservers (ns1.heimdns.net, ns2.heimdns.net, ns3.heimdns.net). It was registered on 9 May 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx.0x7f.dk. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 1337 | 300s | mx.0x7f.dk | 116.202.105.157 2a01:4f8:c013:bc40::25 |
mx.0x7f.dk mx.0x7f.dk |
AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH |
| TXT Record |
|---|
| v=spf1 include:spf.0x7f.dk ~all |
| Policy | Record (theilgaardjensen.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.0x7f.dk ~all |
| Policy | Record (_dmarc.theilgaardjensen.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; rua=mailto:hostmaster@theilgaardjensen.dk; sp=none; aspf=r; |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves theilgaardjensen.dk: no address www.theilgaardjensen.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | 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.mx.0x7f.dk | DANE-EE · SPKI · SHA-256 | DEB7CC36CED3A151804FC2666448DF3A… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2018-05-09 |
| Expires | 2027-05-31 (226d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-08 19:32:24 | 1560ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-24 23:49:03 | 11071ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-16 17:08:54 | 2613ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-05 18:39:17 | 9824ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-04 11:34:17 shown | 4423ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-27 23:23:38 | 2537ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-25 13:24:50 | 488ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-25 13:04:55 | 2489ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-25 01:30:49 | 9432ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-18 03:26:25 | 1514ms | 2 NS 0 A 1 MX | 🔓 Insecure |