37-3.dk DNS records

🖥️ Nameservers2 records 39ms

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 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.129	3600s	webcluster1.webpod14-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	373-dk0e.mail.protection.outlook.com	2a01:111:f403:ca09:: 2a01:111:f403:ca09::24 2a01:111:f403:ca48::8 2a01:111:f403:ca48::a 52.101.68.21 52.101.73.123 52.101.73.145 52.101.73.30	mail-am3pr04cu00500.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am6pr02cu00203.inbound.protection.outlook.com mail-am6pr02cu00301.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)1 records 48ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10c:a:92e2:2a6a:5ffd	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 329ms

TXT Record
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (37-3.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.37-3.dk)
p=reject	v=DMARC1; p=reject

📬 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
TXT	_acme-challenge.37-3.dk	hSrIcGOU7kMN4LEwVRplcPKiSOSBaNTVBw5QC4Vy1Xo
TXT	_acme-challenge.37-3.dk	rzkX2FkswGITGrKbh5w4adSgIY3uxefA64J0VvWelGE

🔗 TLSA / DANE

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

🔐 DNSSEC93ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080701
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

39ms

A

39ms

MX

43ms

AAAA

48ms

TXT

329ms

CAA

54ms

HTTPS

53ms

TLSA

370ms

SOA

0ms

MTA-STS

243ms

DNSSEC

93ms

SRV

176ms

Total

1244ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 12:09:23	1244ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-07 15:02:14	2151ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-15 05:23:10	17312ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-09 04:37:39	2715ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 05:47:22	906ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 12:54:23	1422ms	2 NS 1 A 1 MX	🔒 Secure	View