3333.dk

📜 Historical scan 2026-08-31 10:51:21 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3333.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 28 August 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 188.228.54.137 is hosted by Altibox Danmark AS (AS214875) in Denmark. Mail is handled by mail.7a.dk. 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#

3 records 125ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 88ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
188.228.54.137	3600s	188.228.54.137.dynamic.altibox.net	AS214875	Altibox Danmark AS	188.228.54.0/24	🇩🇰 Denmark	Dronninglund

📧 MX Records#

1 records 94ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	mail.7a.dk	188.228.54.137 2a00:fd01:8146:3d00::30	188.228.54.137.dynamic.altibox.net —	AS214875 Altibox Danmark AS AS214875 Altibox Danmark AS

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	188.228.54.137
🔶 Autoconfig	188.228.54.137

🔷 AAAA Records (IPv6)#

1 records 82ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a00:fd01:8146:3d00:215:5dff:fe02:6d04	600s	—	AS214875	Altibox Danmark AS	2a00:fd01:0:0:0:0:0:0/32	🇩🇰 Denmark	Grindsted

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 1061ms

TXT Record
v=spf1 include:spf.mailjet.com include:spf.simply.com -all

✉️ SPF#

Policy	Record (3333.dk)
-all (hard fail)	v=spf1 include:spf.mailjet.com include:spf.simply.com -all

📨 DMARC#

Policy	Record (_dmarc.3333.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 2026-10-08 06:04:27

www	188.228.54.119 (AS214875) (address records, no CNAME)
www vs bare domain	Same network 3333.dk: 188.228.54.119 (AS214875) www.3333.dk: 188.228.54.119 (AS214875)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u27356220.wl221.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u27356220.wl221.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: 2/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.3333.dk	ee82bfdb-8ebe-4024-948d-154cf4acc5f6.c-8a1f.tx.auth.certifytheweb.com
TXT	ee82bfdb-8ebe-4024-948d-154cf4acc5f6.c-8a1f.tx.auth.certifytheweb.com	HSs__tgW0a9b_7i_MDC6wf0BOrXpMLAtvBMwKI5kFvw
TXT	ee82bfdb-8ebe-4024-948d-154cf4acc5f6.c-8a1f.tx.auth.certifytheweb.com	Sv3gEHpCcu9u0Amb0RCbdxK4Z454p063wXn1r1qZcDc

🔗 TLSA / DANE#

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

🔐 DNSSEC#

357ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026083101
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-03 05:55:34

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2007-08-28
Expires	2027-08-31 (318d)

📋 WHOIS#

⏱️ Lookup Timing#

125ms

88ms

94ms

AAAA

82ms

TXT

1061ms

CAA

112ms

HTTPS

80ms

TLSA

171ms

SOA

0ms

MTA-STS

178ms

DNSSEC

357ms

SRV

167ms

Total

2054ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 06:04:27	1246ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-03 05:38:43	1088ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-04 11:59:55	1206ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-02 16:42:00	1014ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-02 03:19:35	1583ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-31 10:51:21 shown	2054ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-29 14:30:51	1646ms	3 NS 0 A 1 MX	🔒 Secure
2026-08-27 04:04:58	1439ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-06 16:27:19	1961ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-25 07:51:53	2509ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-21 20:31:00	895ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:45:24	667ms	3 NS 1 A 1 MX	🔒 Secure