Powershell get IPs from hosts programmatically - powershell

Question

I have a list of hosts from my LAN (over 1000) that was extracted in Excel format from previous guy that worked here before I started my employment. I need to know the IP's of each host.
I would need some automatic extract (I hope there should be a smarter method than to ping manually all hosts in order to get the IP). I came across SO and read this question. Using PowerShell means a good step toward automation of what I need.
However, at what I am stuck is how to automate this command (in PowerShell) in order to use the excel file as input (or text) and provide an output file that contains the relevant IPs?
Update: a code I have in mind:
$servers = get-content "C:\scr\Servers.txt"
foreach ($Server in $Servers)
{
$Addresses = $null
try {
$Addresses = [System.Net.Dns]::GetHostAddresses("$Server").IPAddressToString
}
catch {
$Addresses = "Server IP cannot resolve."
}
foreach($Address in $addresses) {
write-host $Server, $Address
}
}
The Excel file used as input contains line by line the hostnames in a single column. This Excel file could be easily converted to text format (which is what I already done by now, resulting the Servers.txt file).
The problem with this code is that it displays the output only in the Powershell window, no file.

Answer 1

$output = #()
$servers = get-content "C:\scr\Servers.txt"
foreach ($Server in $Servers)
{
$Addresses = $null
try {
$Addresses = ((Test-Connection $Server | select -skip 3).IPV4Address).IPAddressToString
}
catch {
$Addresses = "Server IP cannot resolve."
}
$output += New-object psobject -property #{
servername = $server
Addresses = $Addresses
}
}
$output | select servername, Addresses | export-csv ".\Addresslist.csv" -NoTypeInformation

Answer 2

Finally, this code has worked successfuly, after tweakening (and also displays in the Powershell windows its outcome - those IPs - during script's execution). At the end, the results are exported in the Addresslist.csv file.
$output = #()
$servers = get-content "C:\scr\Servers.txt"
foreach ($Server in $Servers)
{
$Addresses = $null
try {
$Addresses = [System.Net.Dns]::GetHostAddresses("$Server")
}
catch {
$Addresses = "Server IP cannot resolve."
}
$output += New-object psobject -property #{
servername = $server
Addresses = $Address
}
foreach($Address in $addresses) {
write-host $Server, $Address
}
}
$output | select servername, Addresses | export-csv ".\Addresslist.csv" -NoTypeInformation