3-s.dk

📜 Historical scan 2026-06-16 12:39:35 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3-s.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 17 May 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 212.237.249.16 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is DNSSEC-signed and validates, publishes a 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 41ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	—	—	—
ns2.curanet.dk	—	—	—

🌍 A Records#

1 records 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
212.237.249.16	—	splash.curanet.dk	AS48854	team.blue Denmark A/S	212.237.248.0/23	🇩🇰 Denmark	—

📧 MX Records#

2 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mx1.onlinemail.io	185.21.42.12	mx1.onlinemail.io	AS48854 team.blue Denmark A/S
20	—	mx2.onlinemail.io	46.36.208.16	mx2.onlinemail.io	AS48854 team.blue Denmark A/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 139ms

TXT Record
v=spf1 include:spf.onlinemail.io -all

✉️ SPF#

Policy	Record (3-s.dk)
-all (hard fail)	v=spf1 include:spf.onlinemail.io -all

📨 DMARC#

Policy	Record (_dmarc.3-s.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-10-10 02:21:22

www	212.237.249.16 (AS48854) (address records, no CNAME)
www vs bare domain	Same network 3-s.dk: 212.237.249.16 (AS48854) www.3-s.dk: 212.237.249.16 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

143ms

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

🏷️ SOA#

35ms

Field	Value
Serial	2026012702
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-15 14:13:22

Field	Value
Registrar	CURANET A/S
Registered	2001-05-17
Expires	2027-06-30 (256d)

🔗 Same registrant#

2 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).

Domain	Registrar
3s-ig.dk	CURANET A/S
3svet.dk	CURANET A/S

📋 WHOIS#

⏱️ Lookup Timing#

41ms

37ms

AAAA

48ms

TXT

139ms

CAA

37ms

HTTPS

38ms

TLSA

75ms

SOA

35ms

MTA-STS

64ms

DNSSEC

143ms

SRV

0ms

Total

642ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-23 19:47:34	466ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-06 14:38:08	557ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-02 10:08:26	562ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-27 05:47:57	541ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-25 20:24:52	2942ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-21 07:01:54	958ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 12:39:35 shown	642ms	2 NS 1 A 2 MX	🔒 Secure