4improve.dk

📜 Historical scan 2026-07-01 23:27:31 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

4improve.dk is a .dk domain served by 2 nameservers (dns1.cscdns.net, dns2.cscdns.net). It was registered on 3 December 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 165.160.13.20 is hosted by Corporation Service Company (AS19574) in United States. Mail is handled by custmx.cscdns.net. 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#

2 records 39ms

Nameserver	IP addresses	PTR	ASN / ISP
dns1.cscdns.net	156.154.130.100 2610:a1:1022::100	ns2.euro909.com ns1.arcemus.com	AS12008 Vercara, LLC AS12008 Vercara, LLC
dns2.cscdns.net	156.154.131.100 2610:a1:1023::100	pdns2.cscdns.net ns2.netnames.net	AS12008 Vercara, LLC AS12008 Vercara, LLC

🌍 A Records#

2 records 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
165.160.13.20	14400s	—	AS19574	Corporation Service Company	165.160.12.0/22	🇺🇸 United States	—
165.160.15.20	14400s	—	AS19574	Corporation Service Company	165.160.12.0/22	🇺🇸 United States	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	14400s	custmx.cscdns.net	198.58.121.58	198-58-121-58.ip.linodeusercontent.com	AS63949 Akamai Connected Cloud

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	165.160.13.20
🔶 Autoconfig	165.160.15.20

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 224ms

TXT Record
v=spf1 -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.4improve.dk)
p=reject	v=DMARC1;p=reject;adkim=s;aspf=s;fo=1;rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

📬 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 12:37:21

www	165.160.13.20 165.160.15.20 (AS19574) (address records, no CNAME)
www vs bare domain	Same network 4improve.dk: 165.160.13.20 165.160.15.20 (AS19574) www.4improve.dk: 165.160.13.20 165.160.15.20 (AS19574)
Wildcard	Yes: any name under the zone resolves

🔎 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#

101ms

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

🏷️ SOA#

63ms

Field	Value
Serial	2020040304
Primary NS (MNAME)	dns1.cscdns.net
Responsible (RNAME)	hostmaster@cscdns.net
Refresh	28800s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	14400s

📋 Registration#

WHOIS fetched 2026-10-01 01:33:28

Field	Value
Registrar	CSC Digital Brand Service, Inc
Registered	2002-12-03
Expires	2026-12-31 (75d)

📋 WHOIS#

⏱️ Lookup Timing#

39ms

38ms

41ms

AAAA

57ms

TXT

224ms

CAA

37ms

HTTPS

42ms

TLSA

66ms

SOA

63ms

MTA-STS

65ms

DNSSEC

101ms

SRV

92ms

Total

668ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 00:50:30	913ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-01 23:27:31 shown	668ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 12:47:04	658ms	2 NS 2 A 1 MX	🔓 Insecure