4t.dk

📜 Historical scan 2026-06-20 15:43:58 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

4t.dk is a .dk domain served by 2 nameservers (ns.scannet2.dk, ns2.scannet2.dk). It was registered on 30 November 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.42.206 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by 4t-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 122ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.scannet2.dk	185.25.141.9 2a02:2339:4006:10d::4171:4171	ns1.scannet.dk ns1.scannet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.scannet2.dk	2a02:2339:1:112:0:5:1:b11 91.197.248.72	ns2.scannet.dk ns2.scannet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 140ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.42.206	3600s	linux201.scannet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 140ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	4t-dk.mail.protection.outlook.com	2a01:111:f403:ca04::b 2a01:111:f403:ca09::2 2a01:111:f403:ca09::7 2a01:111:f403:ca09::8 52.101.68.5 52.101.68.8 52.101.73.1 52.101.73.30	mail-dbbpr03cu00103.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-am7pr05cu00306.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 → 52.97.201.120

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 181ms

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

📝 TXT Records#

2 records 525ms

TXT Record
MS=ms84043564
v=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com ip4:34.243.92.178 -all

✉️ SPF#

Policy	Record (4t.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com ip4:34.243.92.178 -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 2026-10-09 11:31:04

www	185.21.42.206 (AS48854) (address records, no CNAME)
www vs bare domain	Same network 4t.dk: 185.21.42.206 (AS48854) www.4t.dk: 185.21.42.206 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

304ms

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

🏷️ SOA#

94ms

Field	Value
Serial	2026051302
Primary NS (MNAME)	ns.scannet2.dk
Responsible (RNAME)	hostmaster@scannet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-14 01:27:38

Field	Value
Registrar	A/S SCANNET
Registered	2001-11-30
Expires	2026-12-31 (74d)

🔗 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#

122ms

140ms

AAAA

96ms

TXT

525ms

CAA

116ms

HTTPS

145ms

TLSA

349ms

SOA

94ms

MTA-STS

122ms

DNSSEC

304ms

SRV

181ms

Total

1501ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 11:31:04	1602ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 00:11:47	820ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-22 21:59:31	892ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-28 01:21:35	1250ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-28 18:27:49	730ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 06:40:46	6793ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 04:28:06	999ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 15:43:58 shown	1501ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 05:14:49	617ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:53:12	1440ms	2 NS 1 A 1 MX	🔒 Secure