comasys.dk

📜 Historical scan 2026-08-24 12:37:12 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

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.

🖥️ Nameservers#

3 records 109ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dns.services	195.242.131.6 2001:67c:564:ffff::11	ns1.dns.services ns1.dns.services	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
ns2.dns.services	2a00:1b18:2:3:3::2 62.69.152.37	ns2.dns.services ns2.dns.services	AS47527 DLX A/S AS47527 DLX A/S
ns3.dns.services	185.55.197.53	ns3.dns.services	AS60153 Inpadi ApS

🌍 A Records#

1 records 167ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.221.124.125	3600s	—	AS51377	CoMaSys ApS	193.221.124.0/24	🇩🇰 Denmark	—

📧 MX Records#

2 records 120ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1-dk.centerasecurity.dk	128.76.60.167 128.76.60.187 89.233.19.127 89.233.19.127 89.233.19.188 89.233.19.188	mx6.centerasecurity.dk mx6.centerasecurity.dk 127.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 188.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S
10	3600s	mx2-dk.centerasecurity.dk	128.76.60.168 128.76.60.169 89.233.19.128 89.233.19.128 89.233.19.129 89.233.19.129	mx6.centerasecurity.dk mx6.centerasecurity.dk 128.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 129.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.98.16.43
🔶 Autoconfig	193.221.124.2

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 1652ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records#

5 records 441ms

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

✉️ SPF#

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

📨 DMARC#

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

📬 MTA-STS#

430ms

Check	Result
Status	🧪 Testing
TXT record (_mta-sts)	✓ Found
HTTPS policy	✓ Valid
Mode	testing
Policy ID	2026082101
max_age	86400s
Policy MX	mx2-dk.centerasecurity.dk, mx1-dk.centerasecurity.dk

📈 TLSRPT#

Status	Report address (rua)
✓ Enabled	mailto:info@comasys.dk, https://comasys.dk

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-07 14:46:17

www	193.221.124.125 (AS51377) (address records, no CNAME)
www vs bare domain	Same network comasys.dk: 193.221.124.125 (AS51377) www.comasys.dk: 193.221.124.125 (AS51377)
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=

✍️ DKIM keys#

2 found

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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 7/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.comasys.dk	By58ae7ialQ1x3FLI3c53rV6geGKrthhgZ2lG1XTyqQ

🔗 TLSA / DANE#

4 records 219ms

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	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…

🔐 DNSSEC#

313ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA#

95ms

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

📋 Registration#

WHOIS fetched 2026-10-07 15:14:44

Field	Value
Registrar	Namehost by CoMaSys ApS
Registered	2004-08-29
Expires	2027-08-31 (316d)

📋 WHOIS#

⏱️ Lookup Timing#

109ms

167ms

120ms

AAAA

168ms

TXT

441ms

CAA

165ms

HTTPS

157ms

TLSA

219ms

SOA

95ms

MTA-STS

430ms

DNSSEC

313ms

SRV

1652ms

Total

19590ms

🕐 Scan History#

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 shown	19590ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-22 08:58:18	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