secure4u.dk

📜 Historical scan 2026-10-01 19:01:32 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

secure4u.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 9 February 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 92.241.201.76 is hosted by Cibicom A/S (AS3342) in Denmark. Mail is handled by secure4u-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a 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 35ms

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 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
92.241.201.76	600s	—	AS3342	Cibicom A/S	92.241.192.0/20	🇩🇰 Denmark	—

📧 MX Records#

1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	secure4u-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca09::24 2a01:111:f403:ca21::e 2a01:111:f403:ca48::e 52.101.181.153 52.101.68.8 52.101.73.120 52.101.91.21	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00306.inbound.protection.outlook.com mail-miypr03cu00206.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am7pr02cu00300.inbound.protection.outlook.com mail-matpr05cu00105.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 → 52.98.149.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 85ms

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

📝 TXT Records#

2 records 285ms

TXT Record
MS=ms32102014
v=spf1 mx include:mx1.ghosting.dk include:spf.mailjet.com include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (secure4u.dk)
-all (hard fail)	v=spf1 mx include:mx1.ghosting.dk include:spf.mailjet.com include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.secure4u.dk)
p=reject	v=DMARC1; p=reject

📬 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 2026-10-16 13:48:04

www	92.241.201.76 (AS3342) (address records, no CNAME)
www vs bare domain	Same network secure4u.dk: 92.241.201.76 (AS3342) www.secure4u.dk: 92.241.201.76 (AS3342)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.secure4u.dk	7fc6673c-953c-4fec-8a96-fcced1cf2594.auth.ghosting.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

189ms

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

🏷️ SOA#

45ms

Field	Value
Serial	2026100103
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 2026-10-12 07:49:26

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2015-02-09
Expires	2027-02-28 (134d)

🔗 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#

35ms

39ms

37ms

AAAA

34ms

TXT

285ms

CAA

36ms

HTTPS

52ms

TLSA

310ms

SOA

45ms

MTA-STS

91ms

DNSSEC

189ms

SRV

85ms

Total

1227ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 13:48:04	5150ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-15 13:42:37	17389ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-14 12:12:26	5069ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-13 10:06:30	17451ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-12 07:18:15	2660ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-11 06:29:18	17660ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-10 03:10:20	1228ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-08 20:48:22	1354ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-07 20:36:41	1104ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-06 20:46:37	1300ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-05 19:43:29	1782ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-04 19:09:10	1630ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-03 19:04:27	1408ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-02 19:03:07	5051ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 19:01:32 shown	1227ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 18:59:28	1044ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 18:48:12	755ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 09:14:24	996ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-28 08:25:47	1239ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-27 08:11:07	1644ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 07:53:11	1290ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-25 18:14:51	1253ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 18:08:06	2745ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 17:30:19	833ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-16 22:30:30	2034ms	2 NS 1 A 1 MX	🔒 Secure