ctalk.dk

📜 Historical scan 2026-06-27 03:01:58 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ctalk.dk is a .dk domain served by 4 nameservers (ns1-36.azure-dns.com, ns2-36.azure-dns.net, ns3-36.azure-dns.org and 1 more). It was registered on 3 September 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.116.25.78 is hosted by GlobalConnect A/S (AS31027) in Denmark. Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk and 1 more. 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#

4 records 47ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1-36.azure-dns.com	150.171.10.36 2603:1061:0:10::24	ns1-36.azure-dns.com ns1-36.azure-dns.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns2-36.azure-dns.net	150.171.16.36 2620:1ec:8ec:10::24	ns2-36.azure-dns.net ns2-36.azure-dns.net	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns3-36.azure-dns.org	13.107.222.36 2a01:111:4000:10::24	ns3-36.azure-dns.org ns3-36.azure-dns.org	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns4-36.azure-dns.info	13.107.206.36 2620:1ec:bda:10::24	ns4-36.azure-dns.info ns4-36.azure-dns.info	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🌍 A Records#

1 records 56ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
87.116.25.78	3600s	—	AS31027	GlobalConnect A/S	87.116.0.0/18	🇩🇰 Denmark	Odense

📧 MX Records#

3 records 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1-dk.centerasecurity.dk	128.76.60.167 128.76.60.187 89.233.19.127 89.233.19.127 89.233.19.188 89.233.19.188	mx6.centerasecurity.dk mx6.centerasecurity.dk 127.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 188.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S
10	3600s	mx2-dk.centerasecurity.dk	128.76.60.168 128.76.60.169 89.233.19.128 89.233.19.128 89.233.19.129 89.233.19.129	mx6.centerasecurity.dk mx6.centerasecurity.dk 128.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 129.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S
20	3600s	mx3-dk.centerasecurity.dk	128.76.60.187 89.233.19.129 89.233.19.129	mx6.centerasecurity.dk 129.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 192ms

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

✉️ SPF#

Policy	Record (ctalk.dk)
-all (hard fail)	v=spf1 mx include:_spf.mobilevalue.dk -all

📨 DMARC#

Policy	Record (_dmarc.ctalk.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:65b76b2b56ebd@dmarc-dk.centerasecurity.com;

📬 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 2026-10-18 08:49:31

www	87.116.25.84 (AS31027) (address records, no CNAME)
www vs bare domain	Same network ctalk.dk: 87.116.25.84 (AS31027) www.ctalk.dk: 87.116.25.84 (AS31027)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: -all

No problems found

🔗 TLSA / DANE#

6 records 1039ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx1-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx3-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx3-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…

🔐 DNSSEC#

144ms

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

🏷️ SOA#

39ms

Field	Value
Serial	1
Primary NS (MNAME)	ns1-36.azure-dns.com
Responsible (RNAME)	azuredns-hostmaster@microsoft.com
Refresh	3600s
Retry	300s
Expire	2419200s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-10 14:29:27

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2018-09-03
Expires	2027-09-30 (345d)

📋 WHOIS#

⏱️ Lookup Timing#

47ms

56ms

34ms

AAAA

46ms

TXT

192ms

CAA

35ms

HTTPS

42ms

TLSA

1039ms

SOA

39ms

MTA-STS

54ms

DNSSEC

144ms

SRV

75ms

Total

1944ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-07-01 05:57:27	1022ms	4 NS 1 A 3 MX	🔒 Secure
2026-06-27 03:01:58 shown	1944ms	4 NS 1 A 3 MX	🔒 Secure
2026-06-24 07:52:53	1189ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 09:21:15	3041ms	4 NS 1 A 3 MX	🔒 Secure
2026-06-21 06:52:12	1127ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 18:29:52	1030ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 03:45:25	2084ms	4 NS 1 A 3 MX	🔒 Secure
2026-06-20 01:05:07	852ms	4 NS 1 A 3 MX	🔒 Secure
2026-06-18 21:21:05	1372ms	4 NS 1 A 3 MX	🔒 Secure
2026-06-16 23:05:36	868ms	4 NS 1 A 3 MX	🔒 Secure