compusystem.dk

📜 Historical scan 2026-06-21 16:19:54 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

compusystem.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was registered on 11 December 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.50.64.3 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by compusystem-dk.mail.protection.outlook.com. The zone is DNSSEC-signed but currently fails validation, has no 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#

2 records 51ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.dandomain.dk	185.25.141.3 2a02:2339:4006:109::dd	ns.dandomain.dk ns.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.dandomain.dk	2a02:2339:1:108::dd:dd 91.197.248.66	ns2.dandomain.dk ns2.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 75ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.50.64.3	3600s	—	AS8075	Microsoft Corporation	20.48.0.0/12	🇮🇪 Ireland	Dublin

📧 MX Records#

1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	compusystem-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::d 2a01:111:f403:ca09::c 2a01:111:f403:ca09::f 52.101.68.0 52.101.68.12 52.101.68.25 52.101.68.5	mail-db4pr02cu00307.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 170ms

TXT Record
MS=ms69912264
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (compusystem.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-07 18:42:43

www	20.50.64.3 (AS8075) (address records, no CNAME)
www vs bare domain	Same network compusystem.dk: 20.50.64.3 (AS8075) www.compusystem.dk: 20.50.64.3 (AS8075)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u20326168.wl169.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u20326168.wl169.sendgrid.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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

72ms

Check	Result
Validation Status	⚠️ Bogus
AD Flag (resolver validates)	✗ Not set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	broken trust chain resolving 'compusystem.dk/A/IN': 127.0.0.1#53

🏷️ SOA#

74ms

Field	Value
Serial	2026010503
Primary NS (MNAME)	ns.dandomain.dk
Responsible (RNAME)	hostmaster@dandomain.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-08 01:14:42

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-12-11
Expires	2026-12-31 (74d)

📋 WHOIS#

⏱️ Lookup Timing#

51ms

75ms

40ms

AAAA

48ms

TXT

170ms

CAA

58ms

HTTPS

74ms

TLSA

653ms

SOA

74ms

MTA-STS

34ms

DNSSEC

72ms

SRV

85ms

Total

1110ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 16:30:14	2267ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 15:46:28	1673ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 17:49:07	1114ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-04 16:24:58	6566ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 16:19:54 shown	1110ms	2 NS 1 A 1 MX	⚠️ Bogus
2026-06-17 01:03:00	65535ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 22:07:10	1769ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 22:06:28	534ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 22:00:10	555ms	2 NS 1 A 1 MX	🔒 Secure