extern-it.dk

📜 Historical scan 2026-06-20 18:23:17 · ← 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 296ms

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	37.27.223.112	monitor.itout.dk	AS24940 Hetzner Online GmbH

🌍 A Records#

1 records 350ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
49.12.60.83	38399s	web01.c-system.dk	AS24940	Hetzner Online GmbH	49.12.0.0/15	🇩🇪 Germany	—

📧 MX Records#

1 records 278ms

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 → 40.104.116.24

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 390ms

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

📝 TXT Records#

1 records 703ms

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#

408ms

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

🏷️ SOA#

291ms

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#

296ms

350ms

278ms

AAAA

305ms

TXT

703ms

CAA

218ms

HTTPS

256ms

TLSA

267ms

SOA

291ms

MTA-STS

309ms

DNSSEC

408ms

SRV

390ms

Total

1995ms

🕐 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	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 shown	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