tsort.dk

📜 Historical scan 2026-06-24 02:10:51 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tsort.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 21 September 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.237.100.251 is hosted by UpCloud Ltd (AS202053) in Finland. Mail is handled by tsort-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 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 34ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.237.100.251	600s	94-237-100-251.de-fra1.upcloud.host	AS202053	UpCloud Ltd	94.237.96.0/20	🇫🇮 Finland	—

📧 MX Records#

1 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	tsort-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::4 2a01:111:f403:ca04::8 2a01:111:f403:ca09:: 52.101.68.0 52.101.68.29 52.101.68.3 52.101.73.30	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-db5pr02cu00100.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00403.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 → 40.104.116.8

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 159ms

TXT Record
kolab-verify=ae10904f5e97c450cf87230325c316c9
MS=ms52194258
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (tsort.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 2026-10-04 03:15:35

www	Address record (no CNAME)
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#

89ms

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

🏷️ SOA#

44ms

Field	Value
Serial	2026032501
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 2026-10-04 03:40:56

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-09-21
Expires	2027-09-30 (347d)

📋 WHOIS#

⏱️ Lookup Timing#

35ms

34ms

38ms

AAAA

34ms

TXT

159ms

CAA

39ms

HTTPS

429ms

TLSA

149ms

SOA

44ms

MTA-STS

431ms

DNSSEC

89ms

SRV

439ms

Total

957ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-04 03:15:35	1543ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 03:03:39	1657ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 02:57:50	792ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 01:06:26	720ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 00:02:43	1068ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-28 08:16:09	1237ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 02:10:51 shown	957ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 13:48:36	1928ms	2 NS 1 A 1 MX	🔒 Secure