4y.dk

📜 Historical scan 2026-06-16 12:45:51 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

4y.dk is a .dk domain served by 2 nameservers (cleo.ns.cloudflare.com, nia.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.62.189 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.firstimpact.com. The zone is not DNSSEC-signed, 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#

2 records 36ms

Nameserver	IP addresses	PTR	ASN / ISP
cleo.ns.cloudflare.com	—	—	—
nia.ns.cloudflare.com	—	—	—

🌍 A Records#

2 records 40ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.62.189	—	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.138.112	—	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
3	—	mx.firstimpact.com	139.162.152.121	vps.fiw.dk	AS63949 Akamai Connected Cloud

🔷 AAAA Records (IPv6)#

2 records 33ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:8a70	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:3ebd	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 31ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.62.189,172.67.138.112 ech=AEX+DQBBzAAgACCRSl2GarTD7edzme/SRSjBGfCZcUyEhedgk/e1csdNQwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:8a70,2606:4700:3037::6815:3ebd

📝 TXT Records#

1 records 138ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (4y.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.4y.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:b2863001a5f14087aeb6bff2d4520187@dmarc-reports.cloudflare.net

📬 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 2026-10-07 16:36:13

www	104.21.62.189 172.67.138.112 2606:4700:3034::ac43:8a70 2606:4700:3037::6815:3ebd (AS13335) (address records, no CNAME)
www vs bare domain	Same network 4y.dk: 104.21.62.189 172.67.138.112 2606:4700:3034::ac43:8a70 2606:4700:3037::6815:3ebd (AS13335) www.4y.dk: 104.21.62.189 172.67.138.112 2606:4700:3034::ac43:8a70 2606:4700:3037::6815:3ebd (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY

🔎 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#

115ms

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

🏷️ SOA#

37ms

Field	Value
Serial	2405908399
Primary NS (MNAME)	cleo.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

36ms

40ms

36ms

AAAA

33ms

TXT

138ms

CAA

38ms

HTTPS

31ms

TLSA

96ms

SOA

37ms

MTA-STS

50ms

DNSSEC

115ms

SRV

0ms

Total

608ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-25 13:04:26	1047ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-09 03:33:22	2225ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-31 20:35:54	1788ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-26 22:39:52	749ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-26 14:41:23	1000ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-08 22:39:36	1208ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-16 09:06:41	1152ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-08 16:12:53	1899ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-25 09:22:08	1022ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 12:45:51 shown	608ms	2 NS 2 A 1 MX	🔓 Insecure