tsort.dk DNS records

🖥️ Nameservers2 records 58ms

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 Records1 records 55ms

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 Records1 records 48ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	tsort-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::c 2a01:111:f403:ca09::7 2a01:111:f403:ca09::c 52.101.68.39 52.101.73.12 52.101.73.22 52.101.73.6	mail-db7pr03cu00401.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am6pr04cu00306.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 Records3 records 114ms

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

🔗 TLSA / DANE

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

🔐 DNSSEC126ms

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

🏷️ SOA54ms

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

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

58ms

A

55ms

MX

48ms

AAAA

46ms

TXT

114ms

CAA

48ms

HTTPS

42ms

TLSA

465ms

SOA

54ms

MTA-STS

60ms

DNSSEC

126ms

SRV

152ms

Total

1068ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-07-02 00:02:43	1068ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 08:16:09	1237ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 02:10:51	957ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 13:48:36	1928ms	2 NS 1 A 1 MX	🔒 Secure	View