chatcore.dk DNS records

🖥️ Nameservers4 records 250ms

Nameserver	IP addresses	PTR	ASN / ISP
pns21.cloudns.net	185.136.96.96 2a06:fb00:1::1:96	pns21.cloudns.net pns21.cloudns.net	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
pns22.cloudns.net	185.136.97.96 2a06:fb00:1::2:96	pns22.cloudns.net pns22.cloudns.net	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
pns23.cloudns.net	185.136.98.96 2a06:fb00:1::3:96	pns23.cloudns.net pns23.cloudns.net	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
pns24.cloudns.net	185.136.99.96 2a06:fb00:1::4:96	pns24.cloudns.net pns24.cloudns.net	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd

🌍 A Records

🌍

No A records found

📧 MX Records1 records 224ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx.dka.mailcore.net	185.138.56.198 185.138.56.198 185.138.56.208 185.138.56.208 194.19.134.70 194.19.134.70 194.19.134.80 194.19.134.80 2001:2010:18:1::70 2001:2010:18:1::80 2a07:a80:1::198 2a07:a80:1::208	198.128-255.56.138.185.in-addr.arpa mx.dka.mailcore.net 208.128-255.56.138.185.in-addr.arpa mx.dka.mailcore.net 70.0-127.134.19.194.in-addr.arpa mx.dka.mailcore.net 80.0-127.134.19.194.in-addr.arpa mx.dka.mailcore.net — mx.dka.mailcore.net mx.dka.mailcore.net mx.dka.mailcore.net	AS34766 atom86 BV AS34766 atom86 BV AS34766 atom86 BV AS34766 atom86 BV AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS34766 atom86 BV AS34766 atom86 BV

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 531ms

TXT Record
v=spf1 a:srv01 include:spf.mailcore.net -all

✉️ SPF

Policy	Record (chatcore.dk)
-all (hard fail)	v=spf1 a:srv01 include:spf.mailcore.net -all

📨 DMARC

Policy	Record (_dmarc.chatcore.dk)
p=reject	v=DMARC1; p=reject; ruf=mailto:postmaster@chatcore.dk; fo=1

📬 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 / DANE1 records 194ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.dka.mailcore.net	DANE-EE · SPKI · SHA-256	40F9D37C5916C036178AC4588F4425C9…

🔐 DNSSEC295ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA229ms

Field	Value
Serial	2022111515
Primary NS (MNAME)	ns21.cloudns.net
Responsible (RNAME)	support@cloudns.net
Refresh	7200s
Retry	1800s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

250ms

A

266ms

MX

224ms

AAAA

230ms

TXT

531ms

CAA

235ms

HTTPS

248ms

TLSA

194ms

SOA

229ms

MTA-STS

274ms

DNSSEC

295ms

SRV

529ms

Total

7042ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 20:49:48	5666ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-23 12:53:12	5662ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-22 12:26:36	7150ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-21 12:14:41	5595ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-20 11:59:32	15847ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-19 07:54:44	1318ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-25 15:18:42	7042ms	4 NS 0 A 1 MX	🔓 Insecure	View
2026-06-16 20:25:56	1214ms	4 NS 0 A 1 MX	🔓 Insecure	View