extern-it.dk

📜 Historical scan 2026-09-19 00:29:27 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

extern-it.dk is a .dk domain served by 3 nameservers (ns1.c-system.dk, ns2.c-system.dk, ns3.c-system.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 49.12.60.83 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by extern-it.dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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#

3 records 60ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.c-system.dk	49.12.60.90	ns1.c-system.dk	AS24940 Hetzner Online GmbH
ns2.c-system.dk	49.12.60.94	ns2.c-system.dk	AS24940 Hetzner Online GmbH
ns3.c-system.dk	130.162.220.97	—	AS31898 Oracle Corporation

🌍 A Records#

1 records 53ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
49.12.60.83	38400s	web01.c-system.dk	AS24940	Hetzner Online GmbH	49.12.0.0/15	🇩🇪 Germany	—

📧 MX Records#

1 records 60ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	38400s	extern-it.dk.mail.protection.outlook.com	—	—	—

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.56

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 98ms

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

📝 TXT Records#

1 records 311ms

TXT Record
v=spf1 a:mailgw1.c-system.dk a:web01.c-system.dk include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (extern-it.dk)
-all (hard fail)	v=spf1 a:mailgw1.c-system.dk a:web01.c-system.dk 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 2026-10-08 15:07:43

www CNAME	extern-it.dk (all on extern-it.dk) → 49.12.60.83 (AS24940)
www vs bare domain	Same network extern-it.dk: 49.12.60.83 (AS24940) www.extern-it.dk: 49.12.60.83 (AS24940)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

77ms

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

🏷️ SOA#

0ms

Field	Value
Serial	1586853043
Primary NS (MNAME)	ns1.c-system.dk
Responsible (RNAME)	hostmaster@c-system.dk
Refresh	14400s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	38400s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

60ms

53ms

60ms

AAAA

53ms

TXT

311ms

CAA

65ms

HTTPS

52ms

TLSA

429ms

SOA

0ms

MTA-STS

76ms

DNSSEC

77ms

SRV

98ms

Total

1055ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-27 13:56:35	1010ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-19 00:29:27 shown	1055ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-27 04:43:38	1268ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-21 17:26:59	1117ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 18:23:17	1995ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-20 01:29:10	4462ms	3 NS 1 A 1 MX	⚠️ Bogus
2026-06-17 09:09:47	2011ms	3 NS 1 A 1 MX	🔓 Insecure