tcsystems.dk

📜 Historical scan 2026-06-23 14:56:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tcsystems.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 28 June 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.201.39.91 is hosted by Itm8 A/S (AS44398) in Denmark. Mail is handled by tcsystems-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 97ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 97ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.201.39.91	3600s	web01.ptr.tangora.dk	AS44398	Itm8 A/S	193.201.39.0/24	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 93ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	10000s	tcsystems-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::a 2a01:111:f403:ca04::f 2a01:111:f403:ca09::3 52.101.68.16 52.101.68.32 52.101.73.12 52.101.73.28	mail-db4pr02cu00406.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am7pr05cu00204.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 → 52.98.151.88
🔶 Autoconfig	193.201.39.91

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 232ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

1 records 323ms

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

✉️ SPF#

Policy	Record (tcsystems.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 03:28:17

www	193.201.39.91 (AS44398) (address records, no CNAME)
www vs bare domain	Same network tcsystems.dk: 193.201.39.91 (AS44398) www.tcsystems.dk: 193.201.39.91 (AS44398)
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#

213ms

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

🏷️ SOA#

95ms

Field	Value
Serial	2021111801
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-11 09:15:27

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2004-06-28
Expires	2027-06-30 (252d)

📋 WHOIS#

⏱️ Lookup Timing#

97ms

93ms

AAAA

95ms

TXT

323ms

CAA

80ms

HTTPS

74ms

TLSA

291ms

SOA

95ms

MTA-STS

284ms

DNSSEC

213ms

SRV

232ms

Total

5071ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-26 23:57:01	4510ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 16:26:06	1335ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 14:56:46 shown	5071ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 12:41:55	2969ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 21:25:30	1169ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 11:57:56	761ms	2 NS 1 A 1 MX	🔒 Secure