opsystem.dk

📜 Historical scan 2026-06-25 17:20:53 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

opsystem.dk is a .dk domain served by 3 nameservers (ns1.fdab.se, ns2.fdab.se, ns3.fdab.se). It was registered on 3 September 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 192.124.249.2 is hosted by Sucuri (AS30148) in United States. Mail is handled by opsystem-dk.mail.protection.outlook.com. 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 230ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.fdab.se	82.209.128.20	20.16-28.128.209.82.in-addr.arpa	AS29518 Bredband2 AB
ns2.fdab.se	192.165.199.2	ns2.fdab.se	AS29518 Bredband2 AB
ns3.fdab.se	13.73.149.142	ns3.fdab.se	AS8075 Microsoft Corporation

🌍 A Records#

1 records 203ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
192.124.249.2	3600s	cloudproxy10002.sucuri.net	AS30148	Sucuri	192.124.249.0/24	🇺🇸 United States	Menifee

📧 MX Records#

1 records 315ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	opsystem-dk.mail.protection.outlook.com	2a01:111:f403:ca04::c 2a01:111:f403:ca04::d 2a01:111:f403:ca09::1 2a01:111:f403:ca09::20 52.101.68.27 52.101.68.32 52.101.68.5 52.101.73.6	mail-db9pr02cu00204.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am6pr04cu00306.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 845ms

TXT Record
google-site-verification=MiObBrG3w6XJO3Xlyk9THpFImjbVgIoCCAs1ZzdyOqM
v=spf1 include:spf.protection.outlook.com include:_spf.fdab.se -all

✉️ SPF#

Policy	Record (opsystem.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:_spf.fdab.se -all

📨 DMARC#

Policy	Record (_dmarc.opsystem.dk)
p=quarantine	v=DMARC1; p=quarantine

📬 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 2026-09-30 20:19:23

www	Address record (no CNAME)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-opsystem-dk._domainkey.opsystem.onmicrosoft.com	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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

458ms

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

🏷️ SOA#

227ms

Field	Value
Serial	2025091101
Primary NS (MNAME)	ns1.fdab.se
Responsible (RNAME)	hostmaster@fdab.se
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-08 05:57:36

Field	Value
Registrar	Abion AB
Registered	2014-09-03
Expires	2027-09-30 (347d)

📋 WHOIS#

⏱️ Lookup Timing#

230ms

203ms

315ms

AAAA

212ms

TXT

845ms

CAA

227ms

HTTPS

252ms

TLSA

972ms

SOA

227ms

MTA-STS

362ms

DNSSEC

458ms

SRV

346ms

Total

5626ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 20:19:23	1239ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-26 21:02:10	1669ms	3 NS 1 A 1 MX	🔓 Insecure
2026-08-27 12:41:42	2286ms	3 NS 1 A 1 MX	🔓 Insecure
2026-08-06 17:04:46	2585ms	3 NS 1 A 1 MX	🔓 Insecure
2026-07-25 16:50:18	25429ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-25 22:00:54	3283ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-25 17:20:53 shown	5626ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-22 03:17:08	1084ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-20 11:03:07	1543ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-18 03:06:56	1275ms	3 NS 1 A 1 MX	🔓 Insecure