21667668.dk

📜 Historical scan 2026-08-21 06:11:53 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

21667668.dk is a .dk domain served by 3 nameservers (ns4.hostonline.dk, ns5.hostonline.dk, ns6.hostonline.dk). It was registered on 18 August 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.215.236.224 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by he.hostonline.dk, mx-backup.hostonline.dk. The zone is not DNSSEC-signed, 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#

3 records 164ms

Nameserver	IP addresses	PTR	ASN / ISP
ns4.hostonline.dk	217.195.185.243 2a02:188:6004:14::10	ns4.hostonline.dk ns4.hostonline.dk	AS31027 GlobalConnect A/S AS31027 GlobalConnect A/S
ns5.hostonline.dk	217.195.185.244 2a02:188:6004:14::11	ns5.hostonline.dk ns5.hostonline.dk	AS31027 GlobalConnect A/S AS31027 GlobalConnect A/S
ns6.hostonline.dk	85.191.126.85	ns6.hostonline.dk	AS204274 AURA Fiber A/S

🌍 A Records#

1 records 279ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.215.236.224	60s	—	AS3292	TDC Holding A/S	195.215.0.0/16	🇩🇰 Denmark	Brønshøj

📧 MX Records#

2 records 264ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	he.hostonline.dk	217.195.185.200 2a02:188:164::100	he.hostonline.dk he.hostonline.dk	AS31027 GlobalConnect A/S AS31027 GlobalConnect A/S
30	43200s	mx-backup.hostonline.dk	217.195.185.201 2a02:188:6004:15::12	mx-backup.hostonline.dk spamfront2.hostonline.dk	AS31027 GlobalConnect A/S AS31027 GlobalConnect 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 525ms

TXT Record
v=spf1 a mx include:_spf.hostonline.dk -all

✉️ SPF#

Policy	Record (21667668.dk)
-all (hard fail)	v=spf1 a mx include:_spf.hostonline.dk -all

📨 DMARC#

Policy	Record (_dmarc.21667668.dk)
p=reject	v=DMARC1; p=reject; aspf=r;

📬 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 2026-10-15 20:25:48

www CNAME	web12.pro3net.dk (all on pro3net.dk) ⚠ 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.21667668.dk
www vs bare domain	www does not resolve 21667668.dk: 195.215.236.224 (AS3292) www.21667668.dk: no address (all like this)
Wildcard	No
Denial of existence	NSEC3 · 10 iterations · 8-byte salt · opt-out RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 6/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

388ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2026082102
Primary NS (MNAME)	ns4.hostonline.dk
Responsible (RNAME)	hostmaster@21667668.dk
Refresh	16384s
Retry	2048s
Expire	1048576s
Minimum (neg-cache TTL)	2560s

📋 Registration#

WHOIS fetched 2026-10-05 20:50:48

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2011-08-18
Expires	2027-08-31 (318d)

📋 WHOIS#

⏱️ Lookup Timing#

164ms

279ms

264ms

AAAA

295ms

TXT

525ms

CAA

299ms

HTTPS

286ms

TLSA

210ms

SOA

0ms

MTA-STS

299ms

DNSSEC

388ms

SRV

298ms

Total

4081ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 20:25:48	679ms	3 NS 1 A 2 MX	🔓 Insecure
2026-10-10 07:20:39	1285ms	3 NS 1 A 2 MX	🔓 Insecure
2026-10-05 20:35:28	646ms	3 NS 1 A 2 MX	🔓 Insecure
2026-09-30 20:02:24	722ms	3 NS 1 A 2 MX	🔓 Insecure
2026-09-25 18:53:02	3021ms	3 NS 1 A 2 MX	🔓 Insecure
2026-09-24 18:37:06	2689ms	3 NS 1 A 2 MX	🔓 Insecure
2026-09-23 00:04:53	1731ms	3 NS 1 A 2 MX	🔓 Insecure
2026-09-18 20:24:30	947ms	3 NS 1 A 2 MX	🔓 Insecure
2026-09-11 18:02:02	685ms	3 NS 1 A 2 MX	🔓 Insecure
2026-09-04 09:47:43	683ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-26 18:03:35	513ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-21 06:11:53 shown	4081ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-18 02:10:01	2897ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-15 23:47:24	2008ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-12 20:42:33	3428ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-06 09:54:18	1134ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-04 14:40:14	2110ms	3 NS 1 A 2 MX	🔓 Insecure
2026-07-27 13:05:33	985ms	3 NS 1 A 2 MX	🔓 Insecure
2026-07-22 07:41:24	1778ms	3 NS 1 A 2 MX	🔓 Insecure
2026-07-17 13:05:46	1190ms	3 NS 1 A 2 MX	🔓 Insecure
2026-07-13 14:25:06	10642ms	3 NS 1 A 2 MX	🔓 Insecure
2026-07-07 04:34:09	1179ms	3 NS 1 A 2 MX	🔓 Insecure
2026-07-03 18:19:12	2690ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-28 10:13:22	1743ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-22 04:35:36	579ms	3 NS 1 A 2 MX	⚠️ Bogus