duotec.dk DNS records

🖥️ Nameservers2 records 50ms

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 2045ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
198.202.211.1	598s	—	AS209242	Cloudflare London, LLC	198.202.211.0/24	🇺🇸 United States	—

📧 MX Records1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	duotec-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::9 2a01:111:f403:ca09::8 2a01:111:f403:ca09::d 52.101.68.12 52.101.73.16 52.101.73.28 52.101.73.8	mail-db4pr02cu00307.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am7pr05cu00204.inbound.protection.outlook.com mail-am0pr04cu00500.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
🔶 Autoconfig	duotec.dk → 198.202.211.1

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 78ms

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

📝 TXT Records4 records 183ms

TXT Record
brevo-code:daeb3d10b39aa85816c04bc1775fb6bf
google-site-verification=SFvPsBC_Ols3H-zg-_HzXrt4z8EqiI4cMbA4Q1ubKWw
MS=ms25881946
v=spf1 mx a ip4:91.102.93.0/27 ip4:80.63.136.182 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (duotec.dk)
-all (hard fail)	v=spf1 mx a ip4:91.102.93.0/27 ip4:80.63.136.182 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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.duotec.dk	duotec.dk

🔗 TLSA / DANE

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

🔐 DNSSEC91ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081301
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

50ms

A

2045ms

MX

41ms

AAAA

58ms

TXT

183ms

CAA

55ms

HTTPS

50ms

TLSA

841ms

SOA

0ms

MTA-STS

80ms

DNSSEC

91ms

SRV

78ms

Total

3742ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-14 19:05:32	3742ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-15 16:21:07	9196ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 05:24:34	18143ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 05:08:25	5433ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 05:02:23	2049ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 05:00:17	1232ms	2 NS 1 A 1 MX	🔒 Secure	View