tdk.dk is a .dk domain served by 2 nameservers (auth01.ns.tele.dk, auth02.ns.tele.dk). It was registered on 8 March 1995 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by localhost.tdk.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 900s | localhost.tdk.dk | 127.0.0.1 | localhost | — |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 0 | 5061 | lcsapsrv01.tdc.dk |
| TXT Record |
|---|
| _globalsign-domain-verification=-tIOzAi00LPqR6Z7lN8wa4pYZ80IiuALKfplyjXA9X |
| _globalsign-domain-verification=6G6foY65ji7unG0rCZnd2xfd-O-Nqo1BWy1oViuvtJ |
| _globalsign-domain-verification=6H0A4EI__v-OTGspoBF3cMAcZC48EUeM5xgVBpgvGY |
| _globalsign-domain-verification=dZ_u-N4TJWTv-iEqTVa6svoyivl7fecMSJNJJ65Jmb |
| _globalsign-domain-verification=OorpW1-TOgedbVugizWvFoEgFkgms1RPRipNOjZT_l |
| _globalsign-domain-verification=OPDdsyAmGLLRq4uSjKr22FQmlZ1Q08dmLtmhUjugCo |
| _globalsign-domain-verification=pJhzkW1Gl7oNOGN2M-4xjsFML3yx_LRRr3hzYa8Hrj |
| _globalsign-domain-verification=S5Xj-hvlL7p524oZ4zMDLxuWOMZl5lF-E9popykeXs |
| _globalsign-domain-verification=tLojo-ge0tXqT9nEmkUDDjsf3NwWS0fz1hb9xzIYr8 |
| FNCNDK5J |
| v=spf1 -all |
| Policy | Record (tdk.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.tdk.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; fo=0; rua=mailto:cv1zdpyr@ag.dmarcian-eu.com; ruf=mailto:cv1zdpyr@fr.dmarcian-eu.com; |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves tdk.dk: no address www.tdk.dk: no address |
| Wildcard | No |
DNS lookups: 0/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.tdk.dk | ai4dPPJofSdrNYTZqhTlGN4NNGPTOlYvnXA0ikjOdg4 |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2024081203 |
| Primary NS (MNAME) | auth01.ns.tele.dk |
| Responsible (RNAME) | dns@eng.tdc.net |
| Refresh | 14400s |
| Retry | 7200s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 900s |
| Field | Value |
|---|---|
| Registrar | Eurodns S.A |
| Registered | 1995-03-08 |
| Expires | 2027-03-31 (164d) |
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 |
|---|---|---|---|
| 2026-09-27 10:51:43 shown | 794ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-19 20:42:33 | 604ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-19 15:49:55 | 1091ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-18 00:34:01 | 3700ms | 2 NS 0 A 1 MX | 🔓 Insecure |