citysystems.dk

📜 Historical scan 2026-06-16 22:42:12 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

citysystems.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 212.237.249.17 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by citysystems-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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 1026ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.dandomain.dk	—	—	—
ns2.dandomain.dk	—	—	—

🌍 A Records#

1 records 4726ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
212.237.249.17	—	splash.dandomain.dk	AS48854	team.blue Denmark A/S	212.237.248.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 1174ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	citysystems-dk.mail.protection.outlook.com	52.101.68.0 52.101.73.15 52.101.73.2 52.101.73.22	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am7pr05cu00106.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 6565ms

TXT Record
MS=ms50737040
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (citysystems.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 2026-10-17 11:13:48

www	212.237.249.17 (AS48854) (address records, no CNAME)
www vs bare domain	Same network citysystems.dk: 212.237.249.17 (AS48854) www.citysystems.dk: 212.237.249.17 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 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#

8364ms

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

🏷️ SOA#

3845ms

Field	Value
Serial	2023011802
Primary NS (MNAME)	ns.dandomain.dk
Responsible (RNAME)	hostmaster@dandomain.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#

1026ms

4726ms

1174ms

AAAA

5417ms

TXT

6565ms

CAA

5291ms

HTTPS

2649ms

TLSA

6426ms

SOA

3845ms

MTA-STS

5767ms

DNSSEC

8364ms

SRV

0ms

Total

65535ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-26 08:13:02	2548ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-06 03:19:09	1372ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-03 07:53:17	766ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 08:26:06	726ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 01:37:49	653ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 22:42:12 shown	65535ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 21:20:24	1884ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 21:09:31	472ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 21:01:17	2696ms	2 NS 1 A 1 MX	🔒 Secure