rtsf.dk

📜 Historical scan 2026-06-29 23:35:42 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rtsf.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 19 November 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.47.247.18 is hosted by One.com A/S (AS51468). Mail is handled by rtsf-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 32ms

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 31ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.47.247.18	3600s	one.com.webforward.g1i.one	AS51468	One.com A/S	195.47.247.0/24	—	—

📧 MX Records#

1 records 32ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	rtsf-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::f 2a01:111:f403:ca09::9 2a01:111:f403:ca09::f 52.101.68.10 52.101.68.15 52.101.68.21 52.101.68.32	mail-db5pr02cu00100.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db3pr0202cu00200.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
🔶 Autoconfig	195.47.247.18

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 47ms

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

📝 TXT Records#

1 records 181ms

TXT Record
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (rtsf.dk)
-all (hard fail)	v=spf1 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-25 01:55:52

www	195.47.247.18 (AS51468) (address records, no CNAME)
www vs bare domain	Same network rtsf.dk: 195.47.247.18 (AS51468) www.rtsf.dk: 195.47.247.18 (AS51468)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

58ms

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

🏷️ SOA#

31ms

Field	Value
Serial	2026062801
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 2026-10-25 02:17:29

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2010-11-19
Expires	2026-11-30 (35d)

🔗 Same registrant#

2 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).

Domain	Registrar
kefal.dk	Punktum dk A/S (direct)
steigerwald.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

32ms

31ms

32ms

AAAA

31ms

TXT

181ms

CAA

30ms

HTTPS

31ms

TLSA

208ms

SOA

31ms

MTA-STS

49ms

DNSSEC

58ms

SRV

47ms

Total

793ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-25 01:55:52	495ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-23 21:13:14	1113ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-22 12:39:26	1753ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 23:57:45	865ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 03:19:00	741ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 01:23:05	1981ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-27 00:10:27	722ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 21:42:26	867ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-04 13:36:18	1175ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-31 02:33:15	2230ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-22 21:40:32	1882ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-31 09:06:08	17029ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-29 23:35:42 shown	793ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 14:51:06	1890ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 19:41:12	3654ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 20:39:01	1105ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 18:05:51	1013ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 19:08:01	1103ms	2 NS 1 A 1 MX	🔒 Secure