4us.dk
📜 Historical scan 2026-06-16 12:43:30  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   38ms
NameserverIP addressesPTRASN / ISP
ns1.e-studio.dk — — —
ns2.e-studio.dk — — —
ns3.e-studio.dk — — —
🌍 A Records1 records   34ms
IPTTLPTRASNISP / OrgCIDRCountryCity
193.200.90.178 — web6.e-studio.dk AS62121 Christian Ebsen ApS 193.200.90.0/23 🇩🇰 Denmark —
📧 MX Records3 records   32ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mx1.spamfri.dk 195.242.131.16 mx1.spamfri.dk AS62121 Christian Ebsen ApS
20 — mx2.spamfri.dk 193.200.91.109 mx2.spamfri.dk AS62121 Christian Ebsen ApS
30 — mx3.spamfri.dk 62.69.152.43
62.69.152.43		 43.34-46.152.69.62.in-addr.arpa
mx3.spamfri.dk		 AS47527 DLX A/S
AS47527 DLX A/S
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   160ms
TXT Record
v=spf1 +a +mx +ip4:193.200.90.178 include:_spf.e-studio.dk ~all
✉️ SPF
PolicyRecord (4us.dk)
~all (soft fail) v=spf1 +a +mx +ip4:193.200.90.178 include:_spf.e-studio.dk ~all
📨 DMARC
PolicyRecord (_dmarc.4us.dk)
p=none (monitor only) v=DMARC1; p=none;
📬 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 / DANE3 records   117ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx1.spamfri.dk DANE-EE · SPKI · SHA-256 884451547A03D0AC2F628D943839BAA6…
SMTP _25._tcp.mx2.spamfri.dk DANE-EE · SPKI · SHA-256 6598C93F79B95376BB8099E9AC862167…
SMTP _25._tcp.mx3.spamfri.dk DANE-EE · SPKI · SHA-256 BBFB0694919290E5BC9D6E2C6F47D846…
🔐 DNSSEC102ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA33ms
FieldValue
Serial2026060801
Primary NS (MNAME)ns1.e-studio.dk
Responsible (RNAME)hostmaster@mailrelay.e-studio.dk
Refresh3600s
Retry1800s
Expire1209600s
Minimum (neg-cache TTL)86400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
38ms
A
34ms
MX
32ms
AAAA
36ms
TXT
160ms
CAA
32ms
HTTPS
32ms
TLSA
117ms
SOA
33ms
MTA-STS
91ms
DNSSEC
102ms
SRV
0ms
Total
760ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-25 23:43:12 623ms 3 NS 1 A 3 MX 🔒 Secure View
2026-08-24 22:35:11 617ms 3 NS 1 A 3 MX 🔒 Secure View
2026-08-16 19:39:28 7794ms 3 NS 1 A 3 MX 🔒 Secure View
2026-08-02 22:19:28 8904ms 3 NS 1 A 3 MX 🔒 Secure View
2026-07-01 23:48:37 678ms 3 NS 1 A 3 MX 🔒 Secure View
2026-06-16 12:43:30 760ms 3 NS 1 A 3 MX 🔒 Secure View
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