ctalk.dk DNS records

🖥️ Nameservers4 records 38ms

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 Records1 records 36ms

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 Records3 records 33ms

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 Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital 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 Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital 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 Digital A/S AS3308 Norlys Digital A/S

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 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

🔗 TLSA / DANE6 records 72ms

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

🔐 DNSSEC57ms

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

🏷️ SOA30ms

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

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

38ms

A

36ms

MX

33ms

AAAA

40ms

TXT

192ms

CAA

33ms

HTTPS

37ms

TLSA

72ms

SOA

30ms

MTA-STS

45ms

DNSSEC

57ms

SRV

47ms

Total

1022ms

🕐 Scan History

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