rtf.dk DNS records

🖥️ Nameservers2 records 132ms

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 137ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.31.76.135	600s	prod35.magentohotel.dk	AS47527	DLX A/S	185.31.76.0/22	🇩🇰 Denmark	Herning

📧 MX Records1 records 145ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	rtf-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::e 2a01:111:f403:ca09::5 2a01:111:f403:ca09::f 52.101.73.153 52.101.73.22 52.101.73.6 52.101.73.8	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am6pr04cu00306.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 → 40.104.116.8
🔶 Autoconfig	rtf.dk → 185.31.76.135

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 511ms

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

📝 TXT Records2 records 248ms

TXT Record
MS=ms38741212
v=spf1 mx a ip4:2.109.51.166 include:spf-westeu.emailsignatures365.com include:spf.protection.outlook.com include:spf.magepartner.net include:servers.mcsv.net -all

✉️ SPF

Policy	Record (rtf.dk)
-all (hard fail)	v=spf1 mx a ip4:2.109.51.166 include:spf-westeu.emailsignatures365.com include:spf.protection.outlook.com include:spf.magepartner.net include:servers.mcsv.net -all

📨 DMARC

Policy	Record (_dmarc.rtf.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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.rtf.dk	rtf.dk

🔗 TLSA / DANE

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC192ms

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

🏷️ SOA116ms

Field	Value
Serial	2026063001
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

132ms

A

137ms

MX

145ms

AAAA

124ms

TXT

248ms

CAA

117ms

HTTPS

118ms

TLSA

208ms

SOA

116ms

MTA-STS

129ms

DNSSEC

192ms

SRV

511ms

Total

1343ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-02 00:29:34	1309ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-04 02:57:20	1343ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-03 00:44:45	22372ms	2 NS 0 A 0 MX	❓ Unknown	View
2026-07-03 00:04:27	14903ms	2 NS 0 A 0 MX	❓ Unknown	View
2026-06-25 19:43:46	848ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 06:19:33	1078ms	2 NS 1 A 1 MX	🔒 Secure	View