comasys.dk is a .dk domain served by 3 nameservers (ns1.dns.services, ns2.dns.services, ns3.dns.services). It was registered on 29 August 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.221.124.125 is hosted by CoMaSys ApS (AS51377) in Denmark. Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk. 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 |
|---|---|---|---|---|---|---|---|
| 193.221.124.125 | 3600s | — | AS51377 | CoMaSys ApS | 193.221.124.0/24 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| 🔶 Autoconfig | 193.221.124.2 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| _72cq2j6lpin2nmvf8og0sampx0k5rji |
| google-site-verification=L4OB_G6jdFJubA8hfduHC1oS_Jo-LRxxeoCl0SVxeOc |
| google-site-verification=rVQaFu-y4HFfz4zlOTTsCqoCIXgUMSeZvYRyduGfDPc |
| MS=ms91891645 |
| v=spf1 include:spf.protection.outlook.com include:_spf.centerasecurity.dk include:_spf.comasys.dk include:spf.emailsignatures365.com include:spf.itnapps.eu -all |
| Policy | Record (comasys.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:_spf.centerasecurity.dk include:_spf.comasys.dk include:spf.emailsignatures365.com include:spf.itnapps.eu -all |
| Policy | Record (_dmarc.comasys.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; adkim=r; aspf=r; pct=100; fo=1; rua=mailto:rua@rua.dmarcmonitor.dk; ruf=mailto:ruf@rua.dmarcmonitor.dk |
| Check | Result |
|---|---|
| Status | ⚠️ Invalid |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✗ Missing / invalid |
| Policy ID | 2026082101 |
| Policy MX | — |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:info@comasys.dk, https://comasys.dk |
| www | 193.221.124.125 (AS51377) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| BIMI | v=BIMI1;l=https://comasys.dk/bimi.svg;a= |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | RSA · ~1024 bit below 2048 bit |
| k1 | dkim.mcsv.net | 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: 7/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.comasys.dk | By58ae7ialQ1x3FLI3c53rV6geGKrthhgZ2lG1XTyqQ |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026082103 |
| Primary NS (MNAME) | ns1.dns.services |
| Responsible (RNAME) | post@dns.services |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 1814400s |
| Minimum (neg-cache TTL) | 7200s |
| Field | Value |
|---|---|
| Registrar | Namehost by CoMaSys ApS |
| Registered | 2004-08-29 |
| Expires | 2027-08-31 (317d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 14:46:17 | 1027ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-07 00:06:56 | 1443ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-24 12:37:12 | 19590ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-22 08:58:18 shown | 7620ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-07-23 13:44:54 | 990ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-28 05:50:59 | 791ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-26 04:04:23 | 877ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-23 07:35:48 | 1020ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 14:13:49 | 2727ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-16 21:51:10 | 822ms | 3 NS 1 A 2 MX | 🔓 Insecure |