rts.dk DNS records

🖥️ Nameservers2 records 202ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records1 records 212ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.56.146.94	3600s	—	AS31027	GlobalConnect A/S	5.56.144.0/20	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 239ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	rts-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::4 2a01:111:f403:ca04::b 2a01:111:f403:ca04::f 52.101.68.12 52.101.68.32 52.101.73.22 52.101.73.8	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am0pr04cu00500.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 → 40.104.116.24

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 278ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records4 records 613ms

TXT Record
GfNXvMWddFZbq5PuqQG0P6RwXnQp82DwtcDhlU1klzCrP50wL+Nwc3exejzzcnk6CNFYa8c0LSC3EtsfHelgNw==
MS=ms45381978
uvmid=265401
v=spf1 ip4:5.56.146.71 ip4:5.56.146.97 ip4:98.71.214.60 ip4:89.233.19.231 include:spf.protection.outlook.com include:spf.mcb.dk include:email.freshdesk.com include:emply.com include:smtp.erpsmtp.mdcnordic.com

✉️ SPF

Policy	Record (rts.dk)
no all — incomplete SPF	v=spf1 ip4:5.56.146.71 ip4:5.56.146.97 ip4:98.71.214.60 ip4:89.233.19.231 include:spf.protection.outlook.com include:spf.mcb.dk include:email.freshdesk.com include:emply.com include:smtp.erpsmtp.mdcnordic.com

📨 DMARC

Policy	Record (_dmarc.rts.dk)
p=none (monitor only)	v=DMARC1; p=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)

🔐 DNSSEC378ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080805
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

202ms

A

212ms

MX

239ms

AAAA

223ms

TXT

613ms

CAA

188ms

HTTPS

245ms

TLSA

913ms

SOA

0ms

MTA-STS

253ms

DNSSEC

378ms

SRV

278ms

Total

4196ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-11 18:07:55	4196ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-07 03:33:42	1406ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-17 04:21:08	2243ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-14 03:10:31	1081ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-05 22:21:25	5677ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-29 04:13:34	850ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 20:44:06	2456ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 15:29:48	1089ms	2 NS 1 A 1 MX	🔒 Secure	View