r-c.dk

Records from scan: 2026-10-14 15:48:12 · 2607ms total · last checked 2026-10-16 20:07 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

r-c.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 5 March 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 49.13.248.230 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by mx1-eu.emailsecurity.app, mx2-eu.emailsecurity.app and 1 more. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 78ms

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 Records#

1 records 117ms

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 Records#

3 records 87ms

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:c967::c 2a01:111:f403:ca04::d 2a01:111:f403:ca21::a 2a01:111:f403:ca48::c 52.101.185.24 52.101.209.31 52.101.73.145 52.101.91.156	mail-cpjpr05cu00204.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-maspr04cu00102.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-zrxpr07cu00100.inbound.protection.outlook.com mail-cpjpr05cu00207.inbound.protection.outlook.com mail-am6pr02cu00301.inbound.protection.outlook.com mail-maspr04cu00104.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 Records#

1 records 216ms

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

📝 TXT Records#

2 records 363ms

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

🧩 Web & zone#

checked 2026-10-14 15:48:12

www	49.13.248.230 (AS24940) (address records, no CNAME)
www vs bare domain	Same network r-c.dk: 49.13.248.230 (AS24940) www.r-c.dk: 49.13.248.230 (AS24940)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
k1	dkim.mcsv.net	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

242ms

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

🏷️ SOA#

82ms

Field	Value
Serial	2026101301
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-14 16:05:24

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-03-05
Expires	2027-03-31 (165d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

78ms

117ms

87ms

AAAA

82ms

TXT

363ms

CAA

81ms

HTTPS

102ms

TLSA

893ms

SOA

82ms

MTA-STS

218ms

DNSSEC

242ms

SRV

216ms

Total

2607ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 15:48:12 shown	2607ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-20 20:21:07	3424ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-17 20:56:09	1556ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-11 05:48:20	1481ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-03 15:45:49	1319ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-31 06:42:31	1583ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-29 20:09:20	2412ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-28 17:25:54	2416ms	2 NS 1 A 3 MX	🔒 Secure
2026-07-01 11:54:59	1797ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-20 05:12:51	6772ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-18 07:17:34	1098ms	2 NS 1 A 3 MX	🔒 Secure