exer.dk DNS records

🖥️ Nameservers2 records 59ms

Nameserver	IP addresses	PTR	ASN / ISP
kate.ns.cloudflare.com	108.162.192.124 172.64.32.124 173.245.58.124 2606:4700:50::adf5:3a7c 2803:f800:50::6ca2:c07c 2a06:98c1:50::ac40:207c	kate.ns.cloudflare.com kate.ns.cloudflare.com kate.ns.cloudflare.com kate.ns.cloudflare.com kate.ns.cloudflare.com kate.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
terry.ns.cloudflare.com	108.162.193.237 172.64.33.237 173.245.59.237 2606:4700:58::adf5:3bed 2803:f800:50::6ca2:c1ed 2a06:98c1:50::ac40:21ed	terry.ns.cloudflare.com terry.ns.cloudflare.com terry.ns.cloudflare.com terry.ns.cloudflare.com terry.ns.cloudflare.com terry.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records1 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
157.90.152.91	300s	exer.dk	AS24940	Hetzner Online GmbH	157.90.0.0/16	🇩🇪 Germany	Falkenstein

📧 MX Records1 records 80ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.exer.dk	2a04:52c0:108:c9a4::1 5.255.103.58	mail.exer.dk mail.exer.dk	AS60404 The Infrastructure Group B.V. AS60404 The Infrastructure Group B.V.

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	mail.exer.dk → 5.255.103.58
🔶 Autoconfig	mail.exer.dk → 5.255.103.58

🔷 AAAA Records (IPv6)1 records 63ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:4f8:c010:45b8::1	300s	exer.dk	AS24940	Hetzner Online GmbH	2a01:4f8:0:0:0:0:0:0/31	🇩🇪 Germany	Falkenstein

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 228ms

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

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.exer.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:noreply-dmarc@system.exer.dk

📬 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 278ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mail.exer.dk	DANE-EE · SPKI · SHA-256	59397706616DA37C4D924055C30DFAA3…

🔐 DNSSEC96ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2412462017
Primary NS (MNAME)	kate.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

59ms

A

42ms

MX

80ms

AAAA

63ms

TXT

228ms

CAA

50ms

HTTPS

53ms

TLSA

278ms

SOA

0ms

MTA-STS

88ms

DNSSEC

96ms

SRV

82ms

Total

1233ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 14:41:29	1233ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-18 15:36:34	1370ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-17 03:31:32	4820ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-10 23:54:35	5350ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-01 23:28:52	1118ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-17 09:09:31	1363ms	2 NS 1 A 1 MX	🔓 Insecure	View