4improve.dk
Last scanned: 2026-07-01 23:27:31  ·  668ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   39ms
NameserverIP addressesPTRASN / 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 Records2 records   38ms
IPTTLPTRASNISP / OrgCIDRCountryCity
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 Records1 records   41ms
PriorityTTLMail ServerIP addressesPTRASN
10 14400s custmx.cscdns.net 198.58.121.58 198-58-121-58.ip.linodeusercontent.com AS63949 Akamai Connected Cloud
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover165.160.13.20
🔶 Autoconfig165.160.15.20
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   224ms
TXT Record
v=spf1 -all
✉️ SPF
PolicyRecord (4improve.dk)
-all (hard fail) v=spf1 -all
📨 DMARC
PolicyRecord (_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
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC101ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA63ms
FieldValue
Serial2020040304
Primary NS (MNAME)dns1.cscdns.net
Responsible (RNAME)hostmaster@cscdns.net
Refresh28800s
Retry7200s
Expire604800s
Minimum (neg-cache TTL)14400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
39ms
A
38ms
MX
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 AtDurationRecordsDNSSEC
2026-07-01 23:27:31 668ms 2 NS 2 A 1 MX 🔓 Insecure View
2026-06-16 12:47:04 658ms 2 NS 2 A 1 MX 🔓 Insecure View
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