tdksteel.dk DNS records

🖥️ Nameservers2 records 228ms

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 233ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.42.225	600s	vm1127.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records1 records 244ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	tdksteel-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::d 2a01:111:f403:ca09::2 2a01:111:f403:ca09::5 52.101.68.29 52.101.73.15 52.101.73.16 52.101.73.26	mail-db5pr02cu00100.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-as9pr05cu01302.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 → 40.104.116.24

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 276ms

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

📝 TXT Records3 records 719ms

TXT Record
MS=ms????????
v=spf1 include:spf.curanet.dk include:outlook.com include:web.shared.mysmtp.com ~all
v=spf1 include:spf.protection.outlook.com -all_custspf.one.com

✉️ SPF

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (tdksteel.dk)
~all (soft fail)	v=spf1 include:spf.curanet.dk include:outlook.com include:web.shared.mysmtp.com ~all
no all — incomplete SPF	v=spf1 include:spf.protection.outlook.com -all_custspf.one.com

📨 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)

🔐 DNSSEC528ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080801
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

228ms

A

233ms

MX

244ms

AAAA

230ms

TXT

719ms

CAA

256ms

HTTPS

229ms

TLSA

547ms

SOA

0ms

MTA-STS

352ms

DNSSEC

528ms

SRV

276ms

Total

4130ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-09 16:16:22	4130ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-10 17:57:21	4430ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 02:03:06	1600ms	2 NS 1 A 1 MX	🔒 Secure	View