3dots.dk

📜 Historical scan 2026-06-20 09:22:28 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3dots.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 29 January 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.50.2.4 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by 3dots-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 97ms

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 96ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.50.2.4	43200s	—	AS8075	Microsoft Corporation	20.48.0.0/12	🇳🇱 The Netherlands	Amsterdam

📧 MX Records#

1 records 97ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	3dots-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::c 2a01:111:f403:ca09::4 2a01:111:f403:ca09::d 52.101.68.8 52.101.73.1 52.101.73.30 52.101.73.6	mail-db7pr03cu00401.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-am7pr05cu00306.inbound.protection.outlook.com mail-am6pr04cu00306.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)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 136ms

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

📝 TXT Records#

2 records 177ms

TXT Record
3dots-dk.azurewebsites.net
v=spf1 ip4:45.32.233.198 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (3dots.dk)
-all (hard fail)	v=spf1 ip4:45.32.233.198 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-21 23:27:38

www CNAME	3dots-dk-redirect.azurewebsites.net (all on azurewebsites.net) ⚠ Dangling: the CNAME target does not exist. If that name can be claimed (an unregistered domain, or a free name on a hosting platform), whoever claims it controls www.3dots.dk
www vs bare domain	www does not resolve 3dots.dk: 20.50.2.4 (AS8075) www.3dots.dk: no address (all like this)
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
s1	s1.domainkey.u20301636.wl137.sendgrid.net	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.3dots.dk	egZeptZNKYOegzKxMvj96eaXzIHPQLVq5msU0csjxFc

🔗 TLSA / DANE#

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

🔐 DNSSEC#

80ms

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

🏷️ SOA#

38ms

Field	Value
Serial	2026030601
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 2026-10-14 04:12:55

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2015-01-29
Expires	2027-01-31 (100d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

97ms

96ms

97ms

AAAA

96ms

TXT

177ms

CAA

84ms

HTTPS

38ms

TLSA

280ms

SOA

38ms

MTA-STS

86ms

DNSSEC

80ms

SRV

136ms

Total

761ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 23:27:38	569ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-19 05:52:58	955ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-15 04:25:12	1170ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-14 03:49:35	1880ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 07:37:59	908ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-04 01:25:00	818ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-20 17:08:18	5458ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-07 02:53:42	32390ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-20 09:22:28 shown	761ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 13:14:21	790ms	2 NS 1 A 1 MX	🔒 Secure