mattissen.dk is a .dk domain served by 2 nameservers (ns1.dns.services, ns2.dns.services). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.210.177.56 is hosted by CoMaSys ApS (AS51377) in Denmark. Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk and 1 more. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 185.210.177.56 | — | 185-210-177-56.comasys.dk | AS51377 | CoMaSys ApS | 185.210.176.0/22 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| v=spf1 +a +mx include:_spf.comasys.dk include:_spf.centerasecurity.dk -all |
| Policy | Record (mattissen.dk) |
|---|---|
| -all (hard fail) | v=spf1 +a +mx include:_spf.comasys.dk include:_spf.centerasecurity.dk -all |
| Policy | Record (_dmarc.mattissen.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; adkim=s; aspf=s |
| www CNAME | mattissen.dk (all on mattissen.dk) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~1024 bit below 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: 6/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026050502 |
| Primary NS (MNAME) | ns1.dns.services |
| Responsible (RNAME) | tonny@mattissen.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 10800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-21 09:11:15 | 901ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-03 19:17:15 | 451ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-23 07:45:31 | 643ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-03 19:21:47 | 651ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-26 09:18:41 | 983ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-04 23:04:29 | 1974ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-02 13:52:47 | 902ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-26 01:03:15 | 1744ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-22 08:07:50 | 2701ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-21 07:01:29 | 1150ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 23:18:33 shown | 852ms | 2 NS 1 A 3 MX | 🔓 Insecure |