tdcmail.dk is a .dk domain served by 4 nameservers (ns1.eurodns.com, ns2.eurodns.com, ns3.eurodns.com and 1 more). It was registered on 9 September 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.249.40.66 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mail.mailfilter.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 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 |
|---|---|---|---|---|---|---|---|
| 195.249.40.66 | 3600s | mail.mailfilter.dk | AS3292 | TDC Holding A/S | 195.249.0.0/16 | 🇩🇰 Denmark | Odense |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | mail.mailfilter.dk | 195.249.40.66 | mail.mailfilter.dk | AS3292 TDC Holding A/S |
| TXT Record |
|---|
| v=spf1 include:_spf.mailfilter.dk -all |
| Policy | Record (tdcmail.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.mailfilter.dk -all |
| Policy | Record (_dmarc.tdcmail.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; fo=1; rua=mailto:cv1zdpyr@ag.eu.dmarcian.com; ruf=mailto:cv1zdpyr@fr.eu.dmarcian.com; |
| www | Exists, no address |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1._domainkey.mailfilter.dk | 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| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026072117 |
| Primary NS (MNAME) | ns1.eurodns.com |
| Responsible (RNAME) | hostmaster@eurodns.com |
| Refresh | 86400s |
| Retry | 7200s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Eurodns S.A |
| Registered | 2003-09-09 |
| Expires | 2027-09-30 (342d) |
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 |
|---|---|---|---|
| 2026-10-12 23:28:56 shown | 1168ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-11 22:15:48 | 1644ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 07:47:23 | 938ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 07:04:36 | 716ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 11:00:28 | 1085ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 09:15:17 | 705ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 10:00:13 | 916ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-19 05:25:44 | 2910ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-17 13:57:25 | 1144ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-05 16:40:48 | 1168ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-29 00:52:11 | 9770ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-22 02:05:57 | 757ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-21 00:39:16 | 32747ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-12 04:57:16 | 9774ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 23:54:27 | 1316ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 14:39:31 | 887ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 13:17:13 | 915ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 04:12:31 | 1182ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 03:41:32 | 568ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 00:45:04 | 2392ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 07:46:00 | 900ms | 4 NS 1 A 1 MX | 🔒 Secure |