t3.dk

📜 Historical scan 2026-09-04 20:22:20 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

t3.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 31 January 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 159.253.90.65 is hosted by Itm8 A/S (AS42903) in Denmark. Mail is handled by t3-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 41ms

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 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
159.253.90.65	3600s	—	AS42903	Itm8 A/S	159.253.88.0/21	🇩🇰 Denmark	Frederiksværk

📧 MX Records#

1 records 25ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	t3-dk.mail.protection.outlook.com	—	—	—

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.24

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 51ms

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

📝 TXT Records#

2 records 113ms

TXT Record
MS=ms62795899
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (t3.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 2026-10-12 22:12:36

www CNAME	t3.dk (all on t3.dk) → 159.253.90.65 (AS42903)
www vs bare domain	Same network t3.dk: 159.253.90.65 (AS42903) www.t3.dk: 159.253.90.65 (AS42903)
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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

104ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026090201
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 2026-10-05 11:03:06

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-01-31
Expires	2027-03-31 (162d)

📋 WHOIS#

⏱️ Lookup Timing#

41ms

37ms

25ms

AAAA

38ms

TXT

113ms

CAA

30ms

HTTPS

30ms

TLSA

337ms

SOA

0ms

MTA-STS

34ms

DNSSEC

104ms

SRV

51ms

Total

743ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-05 10:42:16	984ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 10:28:19	1189ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-27 09:54:59	1128ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-04 20:22:20 shown	743ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-28 04:42:16	951ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 07:34:36	650ms	2 NS 1 A 1 MX	🔒 Secure