THE RECORDS BEHIND THE NAME
DNS lookup.
Explore resource records, mail routing and reverse DNS.
Public IPs automatically use PTR. Common records queries A, AAAA, MX, NS, CNAME, TXT, SOA and CAA separately.
Querying DNS records…
DNS
11 answer recordsweb4u.cz
ANOERRORAD yes
AAAANOERRORAD yes
MXNOERRORAD yes
NSNOERRORAD yes
CNAMENOERROR · no answersAD yes
TXTNOERRORAD yes
SOANOERRORAD yes
CAANOERRORAD yes
AD indicates that the resolver reports DNSSEC-validated data. “AD no” can also mean the zone is unsigned. NXDOMAIN is a DNS result, not a domain-availability check.
| Type | Name | TTL · seconds | Value | Look up |
|---|---|---|---|---|
| A | web4u.cz | 60 | 81.91.86.19 | IP WHOIS → |
| AAAA | web4u.cz | 60 | 2001:1568::19 | IP WHOIS → |
| MX | web4u.cz | 60 | 10 mx.web4u.cz. | DNS → |
| NS | web4u.cz | 60 | ns.web4u.cz. | DNS → |
| NS | web4u.cz | 60 | ns2.web4u.cz. | DNS → |
| TXT | web4u.cz | 60 | "smv=9d9c9b062c03b840" | — |
| TXT | web4u.cz | 60 | "MS=0394720CC11BB6E64FFED5064A40D0401C20807E" | — |
| TXT | web4u.cz | 60 | "zoho-verification=zb27107936.zmverify.zoho.eu" | — |
| TXT | web4u.cz | 60 | "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 | web4u.cz | 60 | ns.web4u.cz. admin.web4u.cz. 2026092200 14400 3600 1209600 14400 | — |
| CAA | web4u.cz | 60 | 0 issue "letsencrypt.org" | — |
Authority records · 1
| Type | Name | TTL · seconds | Value | Look up |
|---|---|---|---|---|
| SOA | web4u.cz | 60 | ns.web4u.cz. admin.web4u.cz. 2026092200 14400 3600 1209600 14400 | — |
Results reflect the public DNS view and recursive caching; they may differ from your local network. TXT strings retain their DNS quoting. Common records does not enumerate every name or record in a zone.