Resolve-DnsRecordUsingAuthoritativeNameServers

DESCRIPTION

Queries a DNS record using the specified domain's authoritative name server(s).

The function returns the result of each authoritative name server as an array of PSCustomObjects.

Suitable for use with Windows PowerShell 5.x and PowerShell Core on Windows and GNU/Linux.

This script wasn't intended to win any design awards, it was created to ease the diagnosis of a particular DNS problem I was experiencing, the details of which can be found here: Cross-Platform Usage of Nslookup. It would have been overkill to write a series of general purpose DNS functions, so I went for a single monolithic function to achieve a single objective. It gets the job done.

EXAMPLE USAGE

. .\Resolve-DnsRecordUsingAuthoritativeNameServers.ps1

$DnsArguments = @{
  Domain = 'example.com'
  RecordType = 'a'
  RecordName = 'www'
  Verbose = $true
}

Resolve-DnsRecordUsingAuthoritativeNameServers @DnsArguments | Format-Table -AutoSize -Wrap

VERBOSE: Checking for presence of nslookup...
VERBOSE: Primary Name Server: sns.dns.icann.org
VERBOSE: Authoritative Name Server(s): a.iana-servers.net, b.iana-servers.net.

AuthoritativeNameServer QueryResult
----------------------- -----------
b.iana-servers.net      Server:  b.iana-servers.net
                        Address:  199.43.133.53
                        Name:    www.example.com
                        Address:  93.184.216.34
a.iana-servers.net      Server:  a.iana-servers.net
                        Address:  199.43.135.53
                        Name:    www.example.com
                        Address:  93.184.216.34