r-c.dk DNS records

🖥️ Nameservers2 records 23ms

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 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
49.13.248.230	3600s	static.230.248.13.49.clients.your-server.de	AS24940	Hetzner Online GmbH	49.12.0.0/15	🇩🇪 Germany	Nuremberg

📧 MX Records3 records 29ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
20	3600s	mx1-eu.emailsecurity.app	132.164.188.153	mx2-eu.emailsecurity.app	AS8075 Microsoft Corporation
30	3600s	mx2-eu.emailsecurity.app	4.245.183.72	mx1-eu.emailsecurity.app	AS8075 Microsoft Corporation
50	3600s	rc-dk0c.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca04::f 2a01:111:f403:ca09::20 2a01:111:f403:ca09::7 52.101.103.140 52.101.68.36 52.101.68.39 52.101.73.16	mail-db6pr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-as2pr05cu00100.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 → 40.104.116.40
🔶 Autoconfig	lb.unifactory.dk → 49.13.248.230

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 93ms

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

📝 TXT Records2 records 174ms

TXT Record
v=DMARC1; p=none; rua=mailto:dmarcreports@mxtoolbox.com
v=spf1 ip4:51.68.35.30 include:spf1.emailsecurity.app include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.com ~all

✉️ SPF

Policy	Record (r-c.dk)
~all (soft fail)	v=spf1 ip4:51.68.35.30 include:spf1.emailsecurity.app include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.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)

🔐 DNSSEC99ms

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

🏷️ SOA0ms

Field	Value
Serial	2026083001
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

23ms

A

33ms

MX

29ms

AAAA

25ms

TXT

174ms

CAA

33ms

HTTPS

25ms

TLSA

793ms

SOA

0ms

MTA-STS

87ms

DNSSEC

99ms

SRV

93ms

Total

1583ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 06:42:31	1583ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-08-29 20:09:20	2412ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-08-28 17:25:54	2416ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-07-01 11:54:59	1797ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-20 05:12:51	6772ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-18 07:17:34	1098ms	2 NS 1 A 3 MX	🔒 Secure	View