op7500.dk DNS records

🖥️ Nameservers2 records 59ms

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 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.77.201	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.211.114	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 61ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.dlx.dk	2a00:1b18:1337:1337::25 46.30.121.240	mail.dlx.dk mx01.dlx.dk	AS47527 DLX A/S AS47527 DLX A/S

🔷 AAAA Records (IPv6)2 records 60ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:d372	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::6815:4dc9	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 41ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.77.201,172.67.211.114 ech=AEX+DQBBvwAgACCg1cDftMt4SgABk5Igyu67EIXZFVLgmAHuWPZSwe66PAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:d372,2606:4700:3034::6815:4dc9

📝 TXT Records1 records 251ms

TXT Record
v=spf1 include:_spf.mail.dlx.dk ~all

✉️ SPF

Policy	Record (op7500.dk)
~all (soft fail)	v=spf1 include:_spf.mail.dlx.dk ~all

📨 DMARC

Policy	Record (_dmarc.op7500.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:276386520ae345f2aa56297e986cfd51@dmarc-reports.cloudflare.net

📬 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 63ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mail.dlx.dk	DANE-EE · SPKI · SHA-256	8A39A20EF25C2CA3EBFF4F7CA64B2272…

🔐 DNSSEC100ms

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	2409165326
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

59ms

A

41ms

MX

61ms

AAAA

60ms

TXT

251ms

CAA

42ms

HTTPS

41ms

TLSA

63ms

SOA

0ms

MTA-STS

83ms

DNSSEC

100ms

SRV

79ms

Total

829ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 11:39:50	829ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-11 01:03:49	980ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-01 06:55:56	543ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-24 15:30:24	590ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-18 00:19:45	1185ms	2 NS 1 A 1 MX	🔓 Insecure	View