sikker-mail.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 6 January 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 78.153.161.181 is hosted by GlobalConnect A/S (AS31027) in Denmark. Mail is handled by hallerup-dk.mx1.staysecuregroup.com, hallerup-dk.mx2.staysecuregroup.net. 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 |
|---|---|---|---|---|---|---|---|
| 78.153.161.181 | — | — | AS31027 | GlobalConnect A/S | 78.153.160.0/19 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| nms-domain-verification=547291309026 |
| v=spf1 include:_spf.staysecuregroup.com ~all |
| Policy | Record (sikker-mail.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.staysecuregroup.com ~all |
| Policy | Record (_dmarc.sikker-mail.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 78.153.161.181 (AS31027) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 4/10 · 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 | 2026040401 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2003-01-06 |
| Expires | 2027-01-31 (100d) |
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 |
|---|---|---|---|
| 2026-10-23 11:30:12 | 3393ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-18 10:46:20 | 2120ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-13 03:26:38 | 3223ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-01 18:55:14 | 2154ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-19 13:30:23 | 850ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 12:58:29 | 804ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-29 09:32:23 | 7198ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-26 15:56:46 | 7214ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-04 23:29:55 | 1138ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-21 08:36:38 | 512ms | 2 NS 1 A 2 MX | ⚠️ Bogus |
| 2026-06-17 19:27:57 shown | 845ms | 2 NS 1 A 2 MX | 🔒 Secure |