cr3.dk DNS records

🖥️ Nameservers2 records 33ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.dandomain.dk	185.25.141.3 2a02:2339:4006:109::dd	ns.dandomain.dk ns.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.dandomain.dk	2a02:2339:1:108::dd:dd 91.197.248.66	ns2.dandomain.dk ns2.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records1 records 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
23.236.62.147	60s	147.62.236.23.bc.googleusercontent.com	AS396982	Google LLC	23.236.48.0/20	🇺🇸 United States	Council Bluffs

📧 MX Records1 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	cr3-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::4 2a01:111:f403:ca04::6 2a01:111:f403:ca04::f 52.101.68.15 52.101.68.16 52.101.68.32 52.101.73.12	mail-db7pr03cu00401.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.56

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 76ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records5 records 143ms

TXT Record
d87b1e0e33bacc1edc8d4575bccc3d5e
j1dci6dvrti7a3fk7hvoup66v7
MS=ms33504506
v=spf1 include:_spf.mlsend.com ip4:5.103.29.187 ip4:213.83.147.44 ip4:83.151.140.36 ip4:5.186.38.219 ip4:45.74.4.112 ip4:62.198.41.161 ip4:45.74.4.64 ip4:185.15.72.35 ip4:83.151.140.36 ip4:83.151.140.36 include:spf.protection.outlook.com -all
v=spf1 ip4:5.103.29.187 ip4:213.83.147.44 ip4:83.151.140.36 ip4:5.186.38.219 ip4:45.74.4.112 ip4:62.198.41.161 ip4:45.74.4.64 ip4:185.15.72.35 include:spf.protection.outlook.com include:_spf.wix.com -all

✉️ SPF

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

Policy	Record (cr3.dk)
-all (hard fail)	v=spf1 include:_spf.mlsend.com ip4:5.103.29.187 ip4:213.83.147.44 ip4:83.151.140.36 ip4:5.186.38.219 ip4:45.74.4.112 ip4:62.198.41.161 ip4:45.74.4.64 ip4:185.15.72.35 ip4:83.151.140.36 ip4:83.151.140.36 include:spf.protection.outlook.com -all
-all (hard fail)	v=spf1 ip4:5.103.29.187 ip4:213.83.147.44 ip4:83.151.140.36 ip4:5.186.38.219 ip4:45.74.4.112 ip4:62.198.41.161 ip4:45.74.4.64 ip4:185.15.72.35 include:spf.protection.outlook.com include:_spf.wix.com -all

📨 DMARC

Policy	Record (_dmarc.cr3.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:sup@cr3.dk; sp=none

📬 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)

🔐 DNSSEC84ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA0ms

Field	Value
Serial	2026080402
Primary NS (MNAME)	ns.dandomain.dk
Responsible (RNAME)	hostmaster@dandomain.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

33ms

A

32ms

MX

31ms

AAAA

41ms

TXT

143ms

CAA

40ms

HTTPS

42ms

TLSA

302ms

SOA

0ms

MTA-STS

57ms

DNSSEC

84ms

SRV

76ms

Total

1290ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-06 11:44:05	1290ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 00:48:21	1129ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 22:45:04	801ms	2 NS 1 A 1 MX	🔒 Secure	View