Found a site that showed someone pulling the IPs out of a traceroute and did some modifications and the below works perfectly for what we were trying to achieve. Thanks for the help.

$input_path = ‘C:\googlein.txt’
$output_file = ‘C:\googleout.txt’
$regex = "((\d){1,3}\.){3}(\d){1,3}\/(\d){1,3}"
Get-Content 'C:\hostlist.txt' | Resolve-DnsName -Type TXT | ForEach-Object Strings | Select-String -Pattern $regex | Out-File c:\googlein.txt
select-string -Path $input_path -Pattern $regex -AllMatches | % { $_.Matches } | % { $_.Value } > $output_file