|DNS Lookup, Reverse DNS Lookup, Domain Configuration Check and IP Address Calculators|
These tools may be useful to people configuring web servers and web sites. It is often helpful to be able to see what DNS information other web servers are seeing to make it possible to troubleshoot problems. Particularly after making DNS changes, when cached entries mean that different DNS servers can return different results.
The DNS lookups on this page use the IPv4 protocol. If you want to test DNS lookups using the IPv6 protocol, use the dns-lookup-ipv6 page.
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