37-3.dk

📜 Historical scan 2026-10-01 04:22:40 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

37-3.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 22 October 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.129 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by 373-dk0e.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 42ms

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 Records#

1 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 Records#

1 records 56ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	373-dk0e.mail.protection.outlook.com	2a01:111:f403:ca04::c 2a01:111:f403:ca21::10 2a01:111:f403:ca21::a 2a01:111:f403:ca48::c 52.101.181.156 52.101.185.21 52.101.68.21 52.101.73.123	mail-db9pr02cu00204.inbound.protection.outlook.com mail-matpr05cu00100.inbound.protection.outlook.com mail-maspr04cu00102.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-wa4pr05cu00104.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am6pr02cu00203.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 → 40.104.116.56

🔷 AAAA Records (IPv6)#

1 records 53ms

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 Records#

1 records 150ms

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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 06:06:48

www	46.30.213.129 2a02:2350:5:10c:a:92e2:2a6a:5ffd (AS51468) (address records, no CNAME)
www vs bare domain	Same network 37-3.dk: 46.30.213.129 2a02:2350:5:10c:a:92e2:2a6a:5ffd (AS51468) www.37-3.dk: 46.30.213.129 2a02:2350:5:10c:a:92e2:2a6a:5ffd (AS51468)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-373-dk0e._domainkey.373dk.onmicrosoft.com	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 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)

🔐 DNSSEC#

75ms

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

🏷️ SOA#

41ms

Field	Value
Serial	2026091005
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-11 07:49:18

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2010-10-22
Expires	2027-10-31 (378d)

📋 WHOIS#

⏱️ Lookup Timing#

42ms

39ms

56ms

AAAA

53ms

TXT

150ms

CAA

37ms

HTTPS

40ms

TLSA

730ms

SOA

41ms

MTA-STS

64ms

DNSSEC

75ms

SRV

62ms

Total

1227ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 06:06:48	1730ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 04:22:40 shown	1227ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 19:48:05	1101ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-11 09:59:00	1341ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 12:09:23	1244ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-07 15:02:14	2151ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-15 05:23:10	17312ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-09 04:37:39	2715ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-28 05:47:22	906ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:54:23	1422ms	2 NS 1 A 1 MX	🔒 Secure