4box.dk

📜 Historical scan 2026-06-16 12:51:44 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

4box.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 51.89.99.87 is hosted by OVH SAS (AS16276) in United Kingdom. Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is DNSSEC-signed and validates, has no 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 89ms

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

🌍 A Records#

1 records 69ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
51.89.99.87	—	ns3163776.ip-51-89-99.eu	AS16276	OVH SAS	51.89.0.0/16	🇬🇧 United Kingdom	—

📧 MX Records#

2 records 69ms

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 238ms

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

✉️ SPF#

Policy	Record (4box.dk)
-all (hard fail)	v=spf1 include:spf.onlinemail.io -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 2026-10-11 07:21:41

www	51.89.99.87 (AS16276) (address records, no CNAME)
www vs bare domain	Same network 4box.dk: 51.89.99.87 (AS16276) www.4box.dk: 51.89.99.87 (AS16276)
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#

232ms

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

🏷️ SOA#

68ms

Field	Value
Serial	2025011801
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

89ms

69ms

AAAA

76ms

TXT

238ms

CAA

68ms

HTTPS

64ms

TLSA

174ms

SOA

68ms

MTA-STS

92ms

DNSSEC

232ms

SRV

0ms

Total

1316ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 18:40:22	414ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-16 18:08:27	6892ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-25 03:19:11	755ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-23 18:33:45	1148ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 12:51:44 shown	1316ms	2 NS 1 A 2 MX	🔒 Secure