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DNS Report
web4u.cz
12 records across the types we query · 323ms · 2026-11-15 15:43 UTC · dns.pizza/lookup/web4u.cz
DNS Lookup
web4u.cz
Lookup
web4u.cz
323ms
2026-11-15 15:43 UTC
12 records
Registrar:
Hosting:
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DNS Records Assistant
· web4u.cz
Ask anything about these results — or pick a starter question below.
Explain what each record type does
Anything unusual or misconfigured?
How is this domain's email set up?
A
IPv4 Addresses
1 record
Copy
81.91.86.19
AAAA
IPv6 Addresses
1 record
Copy
2001:1568::19
MX
Mail Servers
1 record
Copy
mx.web4u.cz
Prio 10
NS
Name Servers
2 records
Copy
ns2.web4u.cz
web4u.cz stats
ns.web4u.cz
web4u.cz stats
TXT
Text Records
4 records
Copy
smv=9d9c9b062c03b840
MS=0394720CC11BB6E64FFED5064A40D0401C20807E
zoho-verification=zb27107936.zmverify.zoho.eu
v=spf1 ip4:81.91.87.150 ip4:81.91.87.80 ip4:81.91.87.60 ip4:81.91.87.250 ip4:81.91.87.34/31 ip4:81.91.87.249 ip4:81.91.87.236 ip6:2001:1568:502:1::/64 ip6:2001:1568:502:2::/64 ip6:2001:1568:502:3::/64 ip6:2001:1568::7060 ip6:2001:1568::7236 ip4:77.78.104.121 ip6:2001:1528:137::a include:_spf.jupiter.salesmanago.pl -all
SOA
Start of Authority
1 record
Copy
Primary NS
ns.web4u.cz
Hostmaster
admin.web4u.cz
Serial
2026110202
Refresh
14400s
Retry
3600s
Expire
1209600s
Min TTL
14400s
CAA
Certificate Authority Authorization
1 record
Copy
letsencrypt.org
PTR
Reverse DNS
1 record
Copy
81.91.86.19
www.web4u.cz