4j.dk

📜 Historical scan 2026-09-30 17:08:56 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

4j.dk is a .dk domain served by 2 nameservers (brenda.ns.cloudflare.com, randy.ns.cloudflare.com). It was registered on 4 September 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.69.38 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.4j.dk. The zone is not DNSSEC-signed, has no 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 58ms

Nameserver	IP addresses	PTR	ASN / ISP
brenda.ns.cloudflare.com	108.162.192.77 172.64.32.77 173.245.58.77 2606:4700:50::adf5:3a4d 2803:f800:50::6ca2:c04d 2a06:98c1:50::ac40:204d	brenda.ns.cloudflare.com brenda.ns.cloudflare.com brenda.ns.cloudflare.com brenda.ns.cloudflare.com brenda.ns.cloudflare.com brenda.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
randy.ns.cloudflare.com	108.162.195.109 162.159.44.109 172.64.35.109 2606:4700:58::a29f:2c6d 2803:f800:50::6ca2:c36d 2a06:98c1:50::ac40:236d	randy.ns.cloudflare.com randy.ns.cloudflare.com randy.ns.cloudflare.com randy.ns.cloudflare.com randy.ns.cloudflare.com randy.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 47ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.69.38	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.204.19	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 61ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	120s	mail.4j.dk	91.107.194.126	static.126.194.107.91.clients.your-server.de	AS24940 Hetzner Online GmbH

🔷 AAAA Records (IPv6)#

2 records 45ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:4526	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:cc13	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 84ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.69.38,172.67.204.19 ech=AEX+DQBBfQAgACDNaAfAfAoQPHxoVrmj1DP8fqwD3X325HwHcrQv7Gf/CAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:4526,2606:4700:3037::ac43:cc13

📝 TXT Records#

1 records 222ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (4j.dk)
-all (hard fail)	v=spf1 -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 2026-10-10 21:29:07

www	188.114.96.1 188.114.97.1 2606:4700:3031::6815:4526 2606:4700:3037::ac43:cc13 (AS13335) (address records, no CNAME)
www vs bare domain	Same network 4j.dk: 104.21.69.38 172.67.204.19 2606:4700:3031::6815:4526 2606:4700:3037::ac43:cc13 (AS13335) www.4j.dk: 188.114.96.1 188.114.97.1 2606:4700:3031::6815:4526 2606:4700:3037::ac43:cc13 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

91ms

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

🏷️ SOA#

51ms

Field	Value
Serial	2413483411
Primary NS (MNAME)	brenda.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-11 06:53:04

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2023-09-04
Expires	2027-09-03 (320d)

📋 WHOIS#

⏱️ Lookup Timing#

58ms

47ms

61ms

AAAA

45ms

TXT

222ms

CAA

50ms

HTTPS

84ms

TLSA

69ms

SOA

51ms

MTA-STS

79ms

DNSSEC

91ms

SRV

66ms

Total

880ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 17:12:17	808ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 17:08:56 shown	880ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-30 07:58:53	2074ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-28 06:18:07	695ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-03 05:54:14	8918ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-23 15:07:58	928ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-27 06:47:07	817ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 12:39:25	2580ms	2 NS 2 A 1 MX	🔓 Insecure