ismessen.dk DNS records

🖥️ Nameservers2 records 33ms

Nameserver	IP addresses	PTR	ASN / ISP
barbara.ns.cloudflare.com	108.162.192.248 172.64.32.248 173.245.58.248 2606:4700:50::adf5:3af8 2803:f800:50::6ca2:c0f8 2a06:98c1:50::ac40:20f8	barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
justin.ns.cloudflare.com	108.162.193.187 172.64.33.187 173.245.59.187 2606:4700:58::adf5:3bbb 2803:f800:50::6ca2:c1bb 2a06:98c1:50::ac40:21bb	justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 57ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.12.204	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.153.65	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records3 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	mail.ismessen.dk	—	—	—
10	300s	mx1.onlinemail.io	185.21.42.12	mx1.onlinemail.io	AS48854 team.blue Denmark A/S
20	300s	mx2.onlinemail.io	46.36.208.16	mx2.onlinemail.io	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover-mf.onlinemail.io → 185.21.40.62

🔷 AAAA Records (IPv6)2 records 55ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3037::6815:ccc	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:9941	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 52ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.12.204,172.67.153.65 ech=AEX+DQBB9AAgACD3ERJYIyHv89YHXNmqxmsBt/DtotScGXwetZzWWVbEAwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3037::6815:ccc,2606:4700:3037::ac43:9941

📝 TXT Records2 records 218ms

TXT Record
v=spf1 a include:spf.curanet.dk ~all
v=spf1 a mx ~all

✉️ SPF

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (ismessen.dk)
~all (soft fail)	v=spf1 a include:spf.curanet.dk ~all
~all (soft fail)	v=spf1 a mx ~all

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 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)

🔐 DNSSEC137ms

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	2412759481
Primary NS (MNAME)	barbara.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

33ms

A

57ms

MX

49ms

AAAA

55ms

TXT

218ms

CAA

61ms

HTTPS

52ms

TLSA

8089ms

SOA

0ms

MTA-STS

112ms

DNSSEC

137ms

SRV

91ms

Total

9255ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-21 21:04:45	9255ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-18 20:15:10	1133ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-25 22:58:31	9883ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-24 18:57:17	5696ms	2 NS 2 A 3 MX	❓ Unknown	View
2026-06-23 16:49:19	1007ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 13:16:00	826ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-20 04:00:26	2952ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-19 15:04:40	701ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-19 09:37:11	1001ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-17 13:28:48	3293ms	2 NS 2 A 3 MX	🔓 Insecure	View