securemail.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 23 August 1999 (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 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 |
|---|---|---|---|---|---|---|---|
| 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 (securemail.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.mailfilter.dk -all |
| Policy | Record (_dmarc.securemail.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 | 2026072107 |
| Primary NS (MNAME) | ns1.eurodns.com |
| Responsible (RNAME) | hostmaster@eurodns.com |
| Refresh | 43200s |
| Retry | 7200s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Eurodns S.A |
| Registered | 1999-08-23 |
| Expires | 2027-09-30 (343d) |
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 |
|---|---|---|---|
| 2026-10-16 16:14:33 | 1369ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-15 12:47:12 | 547ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-14 12:45:17 | 1547ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 23:24:03 | 731ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 15:57:01 | 696ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 15:39:35 | 728ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 15:30:46 | 659ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 14:02:05 | 1033ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-21 05:25:25 shown | 12962ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-20 04:08:29 | 2910ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-19 02:51:29 | 1042ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-06 13:09:24 | 1272ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-31 18:26:54 | 843ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-22 09:27:33 | 9736ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-21 04:29:48 | 979ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-15 21:39:15 | 909ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-29 01:32:54 | 858ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 21:43:30 | 1001ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 06:30:52 | 796ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 19:38:23 | 1532ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 18:18:27 | 973ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 00:01:23 | 2638ms | 4 NS 1 A 1 MX | 🔒 Secure |