rtctransport.dk DNS records

🖥️ Nameservers2 records 44ms

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 70ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.158.47	600s	linux27.dandomain.dk	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records1 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	rtctransport-dk.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca09::5 2a01:111:f403:ca09::b 2a01:111:f403:ca48::8 52.101.103.137 52.101.68.8 52.101.73.26 52.101.73.28	mail-db6pr03cu00105.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-as9pr05cu01302.inbound.protection.outlook.com mail-am7pr05cu00204.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 → 40.104.116.8

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 70ms

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

📝 TXT Records3 records 151ms

TXT Record
knowbe4-site-verification=4660d54e011d620b711f90fdba67c8ad
MS=ms40285647
v=spf1 mx a include:spf.protection.outlook.com include:spf.topdesk.net include:mailgun.org include:mail.zendesk.com -all

✉️ SPF

Policy	Record (rtctransport.dk)
-all (hard fail)	v=spf1 mx a include:spf.protection.outlook.com include:spf.topdesk.net include:mailgun.org include:mail.zendesk.com -all

📨 DMARC

Policy	Record (_dmarc.rtctransport.dk)
p=reject	v=DMARC1; p=reject; pct=100; fo=1; ri=3600; sp=reject; ruf=mailto:dmarc-reports@rtctransport.dk; rua=mailto:dmarc-reports@rtctransport.dk

📬 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)

🔐 DNSSEC83ms

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

🏷️ SOA0ms

Field	Value
Serial	2026061201
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

44ms

A

70ms

MX

49ms

AAAA

49ms

TXT

151ms

CAA

39ms

HTTPS

39ms

TLSA

600ms

SOA

0ms

MTA-STS

54ms

DNSSEC

83ms

SRV

70ms

Total

1228ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 05:33:56	1228ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 00:24:33	706ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 21:32:45	596ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 18:39:02	1209ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-19 16:32:36	653ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 03:04:54	1899ms	2 NS 1 A 1 MX	🔒 Secure	View