c4t.dk

📜 Historical scan 2026-06-22 01:51:06 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

c4t.dk is a .dk domain served by 3 nameservers (ns1.dns.services, ns2.dns.services, ns3.dns.services). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.242.131.238 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by c4t-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#

3 records 148ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dns.services	195.242.131.6 2001:67c:564:ffff::11	ns1.dns.services ns1.dns.services	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
ns2.dns.services	2a00:1b18:2:3:3::2 62.69.152.37	ns2.dns.services 37.34-46.152.69.62.in-addr.arpa	AS47527 DLX A/S AS47527 DLX A/S
ns3.dns.services	185.55.197.53	ns3.dns.services	AS60153 Inpadi ApS

🌍 A Records#

1 records 83ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.242.131.238	3600s	forward01.dns.services	AS62121	Christian Ebsen ApS	195.242.130.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
5	3600s	c4t-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca09::2 2a01:111:f403:ca09::4 2a01:111:f403:ca09::5 52.101.68.29 52.101.73.16 52.101.73.22 52.101.73.24	mail-du2pr03cu00102.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-as8pr05cu00300.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 → 52.97.189.104

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 341ms

TXT Record
MS=ms86239387
v=spf1 include:spf.protection.outlook.com include:smtp2.mailnem.dk -all

✉️ SPF#

Policy	Record (c4t.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:smtp2.mailnem.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 2026-10-07 16:33:22

www	195.242.131.238 (AS62121) (address records, no CNAME)
www vs bare domain	Same network c4t.dk: 195.242.131.238 (AS62121) www.c4t.dk: 195.242.131.238 (AS62121)
Wildcard	No
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: 2/10 · policy: -all

error include:smtp2.mailnem.dk has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

90ms

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

🏷️ SOA#

93ms

Field	Value
Serial	2022091419
Primary NS (MNAME)	ns1.dns.services
Responsible (RNAME)	post@dns.services
Refresh	10800s
Retry	3600s
Expire	1814400s
Minimum (neg-cache TTL)	7200s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

148ms

83ms

49ms

AAAA

51ms

TXT

341ms

CAA

49ms

HTTPS

55ms

TLSA

115ms

SOA

93ms

MTA-STS

72ms

DNSSEC

90ms

SRV

236ms

Total

753ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-08-27 03:50:19	721ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-24 13:58:11	935ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-23 17:58:36	1182ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 01:51:06 shown	753ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-16 18:45:11	830ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-16 18:40:30	2687ms	3 NS 1 A 1 MX	🔒 Secure