rts-as.dk DNS records

🖥️ Nameservers2 records 33ms

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 47ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.6	3600s	webcluster1.webpod12-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	rtsas-dk0i.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca09::2 2a01:111:f403:ca09::8 2a01:111:f403:ca09::b 52.101.68.16 52.101.68.18 52.101.68.27 52.101.73.15	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-am9pr04cu00107.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
🔶 Autoconfig	46.30.213.6

🔷 AAAA Records (IPv6)1 records 49ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10a:33:1d91:68ad:2abe	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 8078ms

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

📝 TXT Records3 records 231ms

TXT Record
MS=ms56341983
sendinblue-code:00bfb32f02167880262ebdb8f3a90223
v=spf1 ip4:87.104.221.156 ip4:87.104.221.155 include:spf.onlinemail.io include:spf.protection.outlook.com ~all

✉️ SPF

Policy	Record (rts-as.dk)
~all (soft fail)	v=spf1 ip4:87.104.221.156 ip4:87.104.221.155 include:spf.onlinemail.io include:spf.protection.outlook.com ~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)

🔐 DNSSEC148ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082402
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

33ms

A

47ms

MX

42ms

AAAA

49ms

TXT

231ms

CAA

35ms

HTTPS

50ms

TLSA

281ms

SOA

0ms

MTA-STS

55ms

DNSSEC

148ms

SRV

8078ms

Total

8925ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-24 22:44:03	8925ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-23 22:26:58	3692ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-19 19:19:33	10204ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-10 05:40:15	5814ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-15 23:11:42	5969ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-12 19:01:58	5569ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-01 12:29:24	999ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 10:38:03	1473ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 14:42:24	1580ms	2 NS 1 A 1 MX	🔒 Secure	View