fcsystem.dk

📜 Historical scan 2026-06-17 09:18:51 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

fcsystem.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.237 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by fcsystem-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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#

2 records 54ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	—	—	—
ns2.curanet.dk	—	—	—

🌍 A Records#

1 records 47ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.237	—	linux31.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 69ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	fcsystem-dk.mail.protection.outlook.com	52.101.73.11 52.101.73.16 52.101.73.22 52.101.73.8	mail-am1pr04cu00103.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am0pr04cu00500.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 238ms

TXT Record
MS=ms98536390
v=spf1 include:spf.protection.outlook.com include:spf.onlinemail.io -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.fcsystem.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 2026-10-09 13:08:15

www CNAME	fcsystem.dk (all on fcsystem.dk) → 185.21.41.237 (AS48854)
www vs bare domain	Same network fcsystem.dk: 185.21.41.237 (AS48854) www.fcsystem.dk: 185.21.41.237 (AS48854)
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#

1 found

Selector	CNAME	Key
selector1	selector1-fcsystem-dk._domainkey.fcsystem.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: 4/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

178ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

49ms

Field	Value
Serial	2026060903
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

54ms

47ms

69ms

AAAA

57ms

TXT

238ms

CAA

48ms

HTTPS

50ms

TLSA

1007ms

SOA

49ms

MTA-STS

90ms

DNSSEC

178ms

SRV

0ms

Total

2097ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 13:08:15	1067ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 23:19:41	685ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 01:22:18	720ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 09:18:51 shown	2097ms	2 NS 1 A 1 MX	🔒 Secure