rundstykke.dk DNS records

🖥️ Nameservers2 records 23ms

Nameserver	IP addresses	PTR	ASN / ISP
aspen.ns.cloudflare.com	108.162.194.109 162.159.38.109 172.64.34.109 2606:4700:50::a29f:266d 2803:f800:50::6ca2:c26d 2a06:98c1:50::ac40:226d	aspen.ns.cloudflare.com aspen.ns.cloudflare.com aspen.ns.cloudflare.com aspen.ns.cloudflare.com aspen.ns.cloudflare.com aspen.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
venkat.ns.cloudflare.com	108.162.195.254 162.159.44.254 172.64.35.254 2606:4700:58::a29f:2cfe 2803:f800:50::6ca2:c3fe 2a06:98c1:50::ac40:23fe	venkat.ns.cloudflare.com venkat.ns.cloudflare.com venkat.ns.cloudflare.com venkat.ns.cloudflare.com venkat.ns.cloudflare.com venkat.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 28ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.79.127	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.145.173	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mail.rundstykke.dk	62.66.181.231	—	AS9158 Telenor A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	webmail.karsoe.dk → 104.21.11.141
🔶 Autoconfig	webmail.karsoe.dk → 172.67.166.39

🔷 AAAA Records (IPv6)2 records 38ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:91ad	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:4f7f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 39ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.79.127,172.67.145.173 ech=AEX+DQBB3gAgACAozdg6TF+IOLutI2raZBDRPBvAjRJn2ExG9kdRfnpPIAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:91ad,2606:4700:3035::6815:4f7f

🔌 SRV Records3 records 60ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	1	443	webmail.karsoe.dk
_imap._tcp	20	1	143	webmail.karsoe.dk
_imaps._tcp	10	1	993	webmail.karsoe.dk

📝 TXT Records1 records 179ms

TXT Record
v=spf1 mx a:webmail.karsoe.dk ip4:62.66.181.231 -all

✉️ SPF

Policy	Record (rundstykke.dk)
-all (hard fail)	v=spf1 mx a:webmail.karsoe.dk ip4:62.66.181.231 -all

📨 DMARC

Policy	Record (_dmarc.rundstykke.dk)
p=quarantine	v=DMARC1; p=quarantine; adkim=s; aspf=s; rua=mailto:postmaster@rundstykke.dk; ruf=mailto:postmaster@rundstykke.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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.rundstykke.dk	AUOb15jdKIjnPOv0017g9EoG8Dq6ZojMfYT176vz4tA
TXT	_acme-challenge.rundstykke.dk	c3VlWSRNVztIhtTxgVY0XYCofcTXKH-8XD3XekfoZFc

🔗 TLSA / DANE

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

🔐 DNSSEC99ms

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	2413150720
Primary NS (MNAME)	aspen.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

23ms

A

28ms

MX

36ms

AAAA

38ms

TXT

179ms

CAA

50ms

HTTPS

39ms

TLSA

53ms

SOA

0ms

MTA-STS

67ms

DNSSEC

99ms

SRV

60ms

Total

663ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 13:47:05	663ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-17 04:47:49	1176ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-27 13:29:24	2148ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-26 14:50:15	942ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-25 10:32:38	816ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-21 16:36:08	1134ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-18 08:05:02	1280ms	2 NS 2 A 1 MX	🔓 Insecure	View