DNS Tools - Core are a collection of
powerful tools for querying DNS servers. Use
the tools to troubleshoot DNS settings or
determine other name resolution problems.
This is a core set of DNS tools that let you
see resource records stored in DNS.
Currently only IPv4 connections to DNS are
possible, but IPv6 (AAAA) records can be
Two tools that use your operating system's built-in resolver to do basic IPv4 or IPv6 DNS queries.
It accepts an IPv4/IPv6 address or hostname and queries your default name servers for the resolution.
Your operating system may also attempt to determine the NetBIOS computer name if the default DNS fails
to respond to an IP address query. Both IPv4 and IPv6 are supported, but you need an IPv6 capable
operating system like Windows 10, 8.x, or 7 to do IPv6 queries
IPv6 Simple Query Screenshot
Use an nslookup equivalent to retrieve many types of resource records including
A, AAAA, NS, MX, PTR, TXT, SOA, CNAME, RRSIG, SRV and many more.
nslookup MX Query Screenshot
Actually two types of DiG (domain information groper). One is standard unix like
and the other is the equivalent of DiG +trace. This is essentially the same data as
nslookup except in a different format. DiG +trace provides a traceback to the root
servers of all delegated zone responsible name servers down to the authoritative
host for the domain or IP address you entered.
DiG +trace Screenshot
Get Basic DNS Records
This tool retrieves a set of DNS records from the
Current DNS Server all at once. The records we request
are A, AAAA, NS, MX, CNAME, PTR, and TXT.
Get Basic Records Screenshot
Zone Transfer (automatic or manual)
This tool can show all the devices registered in a DNS zone
that defines a domain using a 'zone transfer' request. We provide
two types of Zone Transfer: one attempts to automatically locate
the Authoritative DNS to make the transfer possible and the other
allows you to specify the Authoritative DNS for the Zone. DNS
servers that implement tight security will not allow you to do
a zone transfer unless you are on an approved IP address list.
Transfer method is TCP using AXFR DNS protocol.
Zone Transfer Screenshot
Test Default DNS
This tool takes an IP address or hostname and requests the A or PTR
record from each DNS name server assigned to your computer. This tells
you if each default DNS is working (response time too) or communicating properly when a
simple name resolution query is made by any internet enabled program.
Test Default DNS Screenshot
Flush Default DNS Cache
Flush Default DNS Cache does what it says - it clears your local cache
of IP addresses and hostnames that were recently resolved. It accomplishes
exactly the same thing as doing ipconfig /flushdns from the command line.
This only affects names and IPs resolved by your TCP/IP networking subsystem,
it does not affect anything resolved using our nslookup or dig tools.
Flush Default DNS Cache Screenshot
Hosts File Editor
The Hosts file is used by Windows (and other operating systems)
as a local database for resolving hostnames to IP addresses and
vice versa. If something is in the hosts file, TCP/IP uses the
information found in the hosts file instead of querying DNS. The
hosts file is a simple text file and we have provided an editor to
help you manage it. NetScanTools Pro must be run using 'Run as
administrator' in order to edit and save changes to the hosts file.