ack.dk DNS records

🖥️ Nameservers2 records 65ms

Nameserver	IP addresses	PTR	ASN / ISP
duke.ns.cloudflare.com	108.162.193.110 172.64.33.110 173.245.59.110 2606:4700:58::adf5:3b6e 2803:f800:50::6ca2:c16e 2a06:98c1:50::ac40:216e	duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
kiki.ns.cloudflare.com	108.162.192.180 172.64.32.180 173.245.58.180 2606:4700:50::adf5:3ab4 2803:f800:50::6ca2:c0b4 2a06:98c1:50::ac40:20b4	kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 73ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
188.114.96.1	300s	—	AS13335	Cloudflare, Inc.	188.114.96.0/22	—	—
188.114.97.1	300s	—	AS13335	Cloudflare, Inc.	188.114.96.0/22	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 45ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a06:98c1:3120::1	300s	—	AS13335	Cloudflare, Inc.	2a06:98c1:3120:0:0:0:0:0/46	—	—
2a06:98c1:3121::1	300s	—	AS13335	Cloudflare, Inc.	2a06:98c1:3120:0:0:0:0:0/46	—	—

🔐 HTTPS Records1 records 61ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=188.114.96.1,188.114.97.1 ech=AEX+DQBBqgAgACAGxVOUN7xhx9V+tRQkDAIg+iMPGY0MzWwZADjM4cVQbwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2a06:98c1:3120::1,2a06:98c1:3121::1

📝 TXT Records1 records 151ms

TXT Record
v=spf1 mx a ip4:84.19.174.8 ~all

✉️ SPF

Policy	Record (ack.dk)
~all (soft fail)	v=spf1 mx a ip4:84.19.174.8 ~all

📨 DMARC

Policy	Record (_dmarc.ack.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:martin@zakobo.dk; ruf=mailto:martin@zakobo.dk; fo=0:1:d:s; adkim=s; aspf=s

📬 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 / DANE

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

🔐 DNSSEC155ms

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	2410367939
Primary NS (MNAME)	duke.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

65ms

A

73ms

MX

51ms

AAAA

45ms

TXT

151ms

CAA

52ms

HTTPS

61ms

TLSA

54ms

SOA

0ms

MTA-STS

92ms

DNSSEC

155ms

SRV

86ms

Total

720ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 09:41:21	913ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-28 09:41:11	3651ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-21 12:55:55	3527ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-25 04:49:49	720ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-24 18:40:46	849ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-22 01:05:01	498ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-16 12:37:27	488ms	2 NS 2 A 0 MX	🔓 Insecure	View