comasys.dk

Records from scan: 2026-10-07 14:46:17  ·  1027ms total  ·  last checked 2026-10-18 06:34 (unchanged)
⬇ 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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records   42ms
NameserverIP addressesPTRASN / 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   22ms
IPTTLPTRASNISP / OrgCIDRCountryCity
193.221.124.125 3535s — AS51377 CoMaSys ApS 193.221.124.0/24 🇩🇰 Denmark —

📧 MX Records#

2 records   39ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mx1-dk.centerasecurity.dk 128.76.60.167
128.76.60.187
89.233.19.127
89.233.19.188		 mx6.centerasecurity.dk
mx6.centerasecurity.dk
mx14.centerasecurity.dk
mx14.centerasecurity.dk		 AS3292 TDC Holding A/S
AS3292 TDC Holding 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
89.233.19.129		 mx6.centerasecurity.dk
mx6.centerasecurity.dk
mx14.centerasecurity.dk
mx14.centerasecurity.dk		 AS3292 TDC Holding A/S
AS3292 TDC Holding A/S
AS3308 Norlys Telco A/S
AS3308 Norlys Telco A/S

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscoverautodiscover.outlook.com → 52.98.154.152
🔶 Autoconfig193.221.124.2

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records   74ms
ServicePriorityWeightPortTarget
_sipfederationtls._tcp 0 1 5061 sipfed.online.lync.com

📝 TXT Records#

5 records   175ms
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#

PolicyRecord (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#

PolicyRecord (_dmarc.comasys.dk)
p=reject v=DMARC1; p=reject; adkim=r; aspf=r; pct=100; fo=1; rua=mailto:rua@rua.dmarcnordic.eu; ruf=mailto:ruf@rua.dmarcnordic.eu

📬 MTA-STS#

170ms
CheckResult
Status🧪 Testing
TXT record (_mta-sts)✓ Found
HTTPS policy✓ Valid
Modetesting
Policy ID2026082101
max_age86400s
Policy MXmx2-dk.centerasecurity.dk, mx1-dk.centerasecurity.dk

📈 TLSRPT#

StatusReport address (rua)
✓ Enabled mailto:rua@rua.dmarcmonitor.dk

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

checked 2026-10-07 14:46:17
www193.221.124.125 (AS51377) (address records, no CNAME)
www vs bare domainSame network
comasys.dk: 193.221.124.125 (AS51377)
www.comasys.dk: 193.221.124.125 (AS51377)
WildcardYes: any name under the zone resolves
Denial of existenceNSEC zone can be walked (all names enumerable)
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY
BIMIv=BIMI1;l=https://comasys.dk/bimi.svg;a=

✍️ DKIM keys#

2 found
SelectorCNAMEKey
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#

TypeNameValue
TXT _acme-challenge.comasys.dk By58ae7ialQ1x3FLI3c53rV6geGKrthhgZ2lG1XTyqQ

🔗 TLSA / DANE#

4 records   88ms
Service / OwnerTypeCert 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…

🔐 DNSSEC#

111ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✓ Found
Flagsunsigned answer

🏷️ SOA#

45ms
FieldValue
Serial2026100701
Primary NS (MNAME)ns1.dns.services
Responsible (RNAME)post@dns.services
Refresh10800s
Retry3600s
Expire1814400s
Minimum (neg-cache TTL)7200s

📋 Registration#

WHOIS fetched 2026-10-07 15:14:44
FieldValue
RegistrarNamehost by CoMaSys ApS
Registered2004-08-29
Expires2027-08-31 (317d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
42ms
A
22ms
MX
39ms
AAAA
29ms
TXT
175ms
CAA
36ms
HTTPS
40ms
TLSA
88ms
SOA
45ms
MTA-STS
170ms
DNSSEC
111ms
SRV
74ms
Total
1027ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-07 14:46:17 shown 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 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
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