ctc.dk

📜 Historical scan 2026-06-20 00:59:38 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ctc.dk is a .dk domain served by 2 nameservers (ns1.atznet.dk, ns2.atznet.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.242.130.101 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by mx4.spamfri.dk, mx2.spamfri.dk and 1 more. 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 165ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.atznet.dk	195.242.130.110 2001:67c:564:fffb::ffff	ns1.atznet.dk —	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
ns2.atznet.dk	2a00:1b18:2:3:2::2 62.69.152.36	ns2.atznet.dk 36.34-46.152.69.62.in-addr.arpa	AS47527 DLX A/S AS47527 DLX A/S

🌍 A Records#

1 records 138ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.242.130.101	3600s	web4.atznet.dk	AS62121	Christian Ebsen ApS	195.242.130.0/23	🇩🇰 Denmark	—

📧 MX Records#

3 records 128ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx4.spamfri.dk	193.200.91.108 2001:67c:564:fffd::4001	mx4.spamfri.dk —	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
20	3600s	mx2.spamfri.dk	193.200.91.109 2001:67c:564:fffd::2001	mx2.spamfri.dk mx2.spamfri.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
30	3600s	mx3.spamfri.dk	2a00:1b18:2:3:fe::2 62.69.152.43 62.69.152.43	mx3.spamfri.dk 43.34-46.152.69.62.in-addr.arpa mx3.spamfri.dk	AS47527 DLX A/S AS47527 DLX A/S AS47527 DLX A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	195.242.130.101
🔶 Autoconfig	195.242.130.101

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 980ms

TXT Record
v=spf1 include:_spf.atznet.dk -all

✉️ SPF#

Policy	Record (ctc.dk)
-all (hard fail)	v=spf1 include:_spf.atznet.dk -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 04:14:12

www CNAME	ctc.dk (all on ctc.dk) → 195.242.130.101 (AS62121)
www vs bare domain	Same network ctc.dk: 195.242.130.101 (AS62121) www.ctc.dk: 195.242.130.101 (AS62121)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

3 records 683ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx2.spamfri.dk	DANE-EE · SPKI · SHA-256	6598C93F79B95376BB8099E9AC862167…
SMTP _25._tcp.mx3.spamfri.dk	DANE-EE · SPKI · SHA-256	BBFB0694919290E5BC9D6E2C6F47D846…
SMTP _25._tcp.mx4.spamfri.dk	DANE-EE · SPKI · SHA-256	4EE743A99328AEF5142706CA5FD3AD61…

🔐 DNSSEC#

855ms

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

🏷️ SOA#

132ms

Field	Value
Serial	2019100406
Primary NS (MNAME)	ns1.atznet.dk
Responsible (RNAME)	hostmaster@atznet.dk
Refresh	86400s
Retry	7200s
Expire	3600000s
Minimum (neg-cache TTL)	172800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

165ms

138ms

128ms

AAAA

134ms

TXT

980ms

CAA

158ms

HTTPS

308ms

TLSA

683ms

SOA

132ms

MTA-STS

347ms

DNSSEC

855ms

SRV

324ms

Total

7524ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 01:10:21	597ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-26 10:29:58	528ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-25 18:47:06	827ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-25 17:30:35	656ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-20 00:59:38 shown	7524ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-16 23:05:11	639ms	2 NS 1 A 3 MX	🔒 Secure