treco.dk DNS records

🖥️ Nameservers2 records 22ms

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 24ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
198.202.211.1	600s	—	AS209242	Cloudflare London, LLC	198.202.211.0/24	🇺🇸 United States	—

📧 MX Records1 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	treco-dk.k-v1.mx.microsoft	2a01:111:f403:ca04:: 2a01:111:f403:ca04::4 2a01:111:f403:ca21::8 2a01:111:f403:ca48::c 52.101.103.143 52.101.181.156 52.101.185.24 52.101.68.16	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-wa4pr05cu00104.inbound.protection.outlook.com mail-zrxpr07cu00100.inbound.protection.outlook.com mail-db4pr02cu00400.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 → 40.104.116.40

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 81ms

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

📝 TXT Records7 records 112ms

TXT Record
apple-domain-verification=eCSWeVaG5e31ycQw
brevo-code:edcff7fb54aba1f9ea98056854093f73
facebook-domain-verification=3nf33t32ad6p3jkh1nud3p3rete1o6
google-site-verification=59qdAH1oKwuFji8cbxEqfZBoNqw1gwczkRjYCxMJv3M
google-site-verification=7kNzMC3fDwFzipmUEa5wbqTKCDF0edD1onsCquxmdLM
google-site-verification=eOyF5klB7PXLPOOGwoKwB26I92RU-P6NwVfDqvBgJKE
v=spf1 mx a include:spf.protection.outlook.com include:spf-de.emailsignatures365.com ip4:195.41.178.0/24 ip4:194.239.1.182 ip4:52.164.205.31 include:145609952.spf03.hubspotemail.net -all

✉️ SPF

Policy	Record (treco.dk)
-all (hard fail)	v=spf1 mx a include:spf.protection.outlook.com include:spf-de.emailsignatures365.com ip4:195.41.178.0/24 ip4:194.239.1.182 ip4:52.164.205.31 include:145609952.spf03.hubspotemail.net -all

📨 DMARC

Policy	Record (_dmarc.treco.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:dmarc@treco.dk; ruf=mailto:dmarc@treco.dk; sp=none; ri=86400

📬 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 / DANE4 records 1825ms

Service / Owner	Type	Cert association
SMTP _25._tcp.treco-dk.k-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	803F7447CC75B208DBCA042346F5D8DF…
SMTP _25._tcp.treco-dk.k-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	C1AD7778796D20BCA65C889A26550211…
SMTP _25._tcp.treco-dk.k-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	54883CC5F1849331E6BF5002C3129D20…
SMTP _25._tcp.treco-dk.k-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	EA7A25255D111FC3CE4CB8FABE3ADF9C…

🔐 DNSSEC93ms

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

🏷️ SOA0ms

Field	Value
Serial	2026090101
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

22ms

A

24ms

MX

30ms

AAAA

28ms

TXT

112ms

CAA

23ms

HTTPS

23ms

TLSA

1825ms

SOA

0ms

MTA-STS

35ms

DNSSEC

93ms

SRV

81ms

Total

2420ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-03 22:08:10	2420ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-29 20:50:58	1467ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-24 18:21:38	1038ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 19:04:27	1611ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 11:57:02	1176ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 04:36:24	1369ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 22:10:35	1806ms	2 NS 1 A 1 MX	🔒 Secure	View