ctan.dk

📜 Historical scan 2026-06-21 01:03:28 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ctan.dk is a .dk domain served by 2 nameservers (ns1.wannafind.dk, ns2.wannafind.dk). It was registered on 31 March 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.109.237 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by ctan-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 29ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.wannafind.dk	185.25.141.6 2a02:2339:4006:103:1c:3f6d:daba:dee	ns1.wannafind.dk ns1.wannafind.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.wannafind.dk	2a02:2339:1:104::daba:daa 91.197.248.69	ns2.wannafind.dk ns2.wannafind.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 45ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.109.237	600s	splash.zitcom.dk	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

1 records 53ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	ctan-dk.mail.protection.outlook.com	2a01:111:f403:ca04::a 2a01:111:f403:ca04::b 2a01:111:f403:ca09::3 2a01:111:f403:ca09::9 52.101.68.3 52.101.68.32 52.101.68.5 52.101.73.1	mail-du0pr03cu00102.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am3pr04cu00501.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 → 52.98.154.136
🔶 Autoconfig	94.231.109.237

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 180ms

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

📝 TXT Records#

2 records 175ms

TXT Record
MS=ms62369479
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.ctan.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:IT-Admin@cestek.dk

📬 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 08:20:09

www	94.231.109.237 (AS48854) (address records, no CNAME)
www vs bare domain	Same network ctan.dk: 94.231.109.237 (AS48854) www.ctan.dk: 94.231.109.237 (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

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-ctan-dk._domainkey.ctan.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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

73ms

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

🏷️ SOA#

41ms

Field	Value
Serial	2022060803
Primary NS (MNAME)	ns1.wannafind.dk
Responsible (RNAME)	hostmaster@wannafind.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-09 04:44:04

Field	Value
Registrar	WANNAFIND.DK A/S
Registered	2019-03-31
Expires	2027-03-31 (163d)

📋 WHOIS#

⏱️ Lookup Timing#

29ms

45ms

53ms

AAAA

39ms

TXT

175ms

CAA

43ms

HTTPS

69ms

TLSA

243ms

SOA

41ms

MTA-STS

42ms

DNSSEC

73ms

SRV

180ms

Total

683ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 08:20:09	1038ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 22:22:33	869ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 05:05:41	1193ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 01:03:28 shown	683ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 23:05:21	665ms	2 NS 1 A 1 MX	🔒 Secure