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DNS Queries

tags: PowerShell categories: PowerShell-Network

Table of Contents

System.Net.Dns

A fast Name resolution with System.Net.Dns

Forward lookup

Resolve the Hostname to IPAddresses

[System.Net.Dns]::GetHostByName($Hostname)

HostName   Aliases AddressList
--------   ------- -----------
google.com {}      {2a00:1450:400a:803::200e, 172.217.168.14}

Reverse lookup

Resolve the IPAddress to HostName

[System.Net.Dns]::GetHostByAddress($IPv4Address)

HostName                  Aliases AddressList
--------                  ------- -----------
zrh11s03-in-f14.1e100.net {}      {172.217.168.14}
[System.Net.Dns]::GetHostByAddress($IPv6Address)

HostName                  Aliases AddressList
--------                  ------- -----------
zrh04s15-in-x0e.1e100.net {}      {2a00:1450:400a:803::200e}

PsNetTools

Name resolution with my Module PsNetTools, based on System.Net.Dns

Forward lookup

Resolve the Hostname to IPAddresses

Test-PsNetdig -Destination $Hostname

Succeeded   : True
InputString : google.com
Destination : google.com
IpV4Address : {216.58.215.238}
IpV6Address : {2a00:1450:400a:803::200e}
TimeMs      : 131

Reverse lookup

Resolve the IPAddress to HostName

Test-PsNetdig -Destination $IPv4Address

Succeeded   : True
InputString : 216.58.215.238
Destination : zrh11s02-in-f14.1e100.net
IpV4Address : {216.58.215.238}
IpV6Address :
TimeMs      : 4573
Test-PsNetdig -Destination $IPv6Address

Succeeded   : True
InputString : 2a00:1450:400a:803::200e
Destination : zrh04s15-in-x0e.1e100.net
IpV4Address :
IpV6Address : {2a00:1450:400a:803::200e}
TimeMs      : 33

Resolve-DnsName Cmdlet

Name resolution with the Resolve-DnsName cmdlet

Forward Lookup

Resolve the Hostname to IPAddresses

Resolve-DnsName -Name $Hostname

Name                                           Type   TTL   Section    IPAddress
----                                           ----   ---   -------    ---------
google.com                                     AAAA   190   Answer     2a00:1450:400a:803::200e
google.com                                     A      181   Answer     172.217.168.78

Reverse lookup

Resolve the IPAddress to HostName

Resolve-DnsName -Name $IPv4Address

Name                           Type   TTL   Section    NameHost
----                           ----   ---   -------    --------
78.168.217.172.in-addr.arpa    PTR    81590 Answer     zrh04s15-in-f14.1e100.net
Resolve-DnsName -Name $IPv6Address

Name                           Type   TTL   Section    NameHost
----                           ----   ---   -------    --------
E.0.0.2.0.0.0.0.0.0.0.0.0.0.0. PTR    56066 Answer     zrh04s15-in-x0e.1e100.net
0.3.0.8.0.A.0.0.4.0.5.4.1.0.0.
A.2.ip6.arpa

See also

Dns Class on Microsoft Docs.

Resolve-DnsName on Microsoft Docs.

PsNetTools on github.

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