extrifit.dk
Last scanned: 2026-06-26 19:16:46  ·  1055ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   85ms
NameserverIP addressesPTRASN / ISP
ns0.feldhost.cz 185.174.168.3
2a0b:a900::b9ff:feae:a803		 ns0.feldhost.cz
ns0.feldhost.cz		 AS206712 FELDSAM s.r.o.
AS206712 FELDSAM s.r.o.
ns1.feldhost.cz 2a03:b780:1:4:216:3eff:fe00:a82
37.46.80.130		 ns1.feldhost.cz
ns1.feldhost.cz		 AS29134 Webglobe, s.r.o.
AS8648 dogado GmbH
🌍 A Records1 records   84ms
IPTTLPTRASNISP / OrgCIDRCountryCity
185.174.168.20 60s web0.feldhost.cz AS206712 FELDSAM s.r.o. 185.174.168.0/23 🇨🇿 Czechia —
📧 MX Records1 records   55ms
PriorityTTLMail ServerIP addressesPTRASN
10 7200s mail.feldhost.cz 185.174.169.172
2a0b:a902::b9ff:feae:a9ac		 mail.feldhost.cz
mail.feldhost.cz		 AS206712 FELDSAM s.r.o.
AS206712 FELDSAM s.r.o.
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscovermail.feldhost.cz → 185.174.169.172
🔶 Autoconfigmail.feldhost.cz → 185.174.169.172
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records3 records   177ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 0 1 443 mail.feldhost.cz
_imap._tcp 0 1 143 mail.feldhost.cz
_imaps._tcp 0 1 993 mail.feldhost.cz
📝 TXT Records1 records   430ms
TXT Record
v=spf1 mx a include:_spf.feldhost.cz ~all
✉️ SPF
PolicyRecord (extrifit.dk)
~all (soft fail) v=spf1 mx a include:_spf.feldhost.cz ~all
📨 DMARC
PolicyRecord (_dmarc.extrifit.dk)
p=none (monitor only) v=DMARC1; p=none; rua=mailto:dmarcreports@feldsam.cz
📬 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
🔏 ACME Challenge
TypeNameValue
CNAME _acme-challenge.extrifit.dk extrifit.dk
🔗 TLSA / DANE1 records   119ms
Service / OwnerTypeCert association
SMTP _25._tcp.mail.feldhost.cz DANE-EE · SPKI · SHA-256 45DE4B83D57BCECD25D21CE2A684D25F…
🔐 DNSSEC101ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA58ms
FieldValue
Serial2021020901
Primary NS (MNAME)ns0.feldhost.cz
Responsible (RNAME)admin@feldhost.cz
Refresh14400s
Retry3600s
Expire604800s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
85ms
A
84ms
MX
55ms
AAAA
117ms
TXT
430ms
CAA
57ms
HTTPS
49ms
TLSA
119ms
SOA
58ms
MTA-STS
88ms
DNSSEC
101ms
SRV
177ms
Total
1055ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-06-26 19:16:46 1055ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-24 17:55:22 1924ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-23 03:03:35 941ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-22 20:42:45 3758ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-22 13:11:30 1172ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-17 09:09:46 1402ms 2 NS 1 A 1 MX 🔓 Insecure View
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