Get-Whois Cmdlet
Parameters Output Objects Config Settings
The get-whois component allows you to query a WHOIS Server for Domain registration information.
Syntax
Get-Whois [parameters]
Remarks
This cmdlet implements the WHOIS protocol defined in RFC 954. To use the cmdlet, simply set the Domain parameter and optionally the Server parameter. This will trigger a WHOIS search on the domain. Upon completion of the search, the DomainInfo object contains the information about the domain.
The cmdlets support pipeline input for some of their parameters. Prebuilding an object and piping it to the cmdlet is very useful, but should be used with caution to prevent security conflicts. Steps have been taken to decrease the risk of a possibly accidental pipe to the cmdlet, for instance, the Credential parameter cannot be piped to the cmdlet and must be specified manually.
Example
# using default WHOIS server
get-whois -domain nsoftware.com
Parameter List
The following is the full list of the parameters of the cmdlet with short descriptions. Click on the links for further details.
| LogFile | The location of a file to which debug information is written. |
| Config | Specifies one or more configuration settings. |
| Domain | Gets information about the domain specified. |
| LocalIP | The IP address of the local interface to use. |
| LogFile | The location of a file to which debug information is written. |
| Server | The server to request domain information from. |
| Timeout | The maximum time allowed for the operation. |
Output Objects
The following is the full list of the output objects returned by the cmdlet with short descriptions. Click on the links for further details.
| DomainInfo | The information that is returned by the Server . |
Config Settings
The following is a list of config settings for the cmdlet with short descriptions. Click on the links for further details.
| ConnectionTimeout | Sets a separate timeout value for establishing a connection. |
| FirewallAutoDetect | Tells the component whether or not to automatically detect and use firewall system settings, if available. |
| FirewallHost | Name or IP address of firewall (optional). |
| FirewallPassword | Password to be used if authentication is to be used when connecting through the firewall. |
| FirewallPort | The TCP port for the FirewallHost;. |
| FirewallType | Determines the type of firewall to connect through. |
| FirewallUser | A user name if authentication is to be used connecting through a firewall. |
| KeepAliveInterval | The retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received. |
| KeepAliveTime | The inactivity time in milliseconds before a TCP keep-alive packet is sent. |
| Linger | When set to True, connections are terminated gracefully. |
| LingerTime | Time in seconds to have the connection linger. |
| LocalHost | The name of the local host through which connections are initiated or accepted. |
| LocalPort | The port in the local host where the component binds. |
| MaxLineLength | The maximum amount of data to accumulate when no EOL is found. |
| MaxTransferRate | The transfer rate limit in bytes per second. |
| ProxyExceptionsList | A semicolon separated list of hosts and IPs to bypass when using a proxy. |
| TCPKeepAlive | Determines whether or not the keep alive socket option is enabled. |
| TcpNoDelay | Whether or not to delay when sending packets. |
| UseIPv6 | Whether to use IPv6. |
| AbsoluteTimeout | Determines whether timeouts are inactivity timeouts or absolute timeouts. |
| FirewallData | Used to send extra data to the firewall. |
| InBufferSize | The size in bytes of the incoming queue of the socket. |
| OutBufferSize | The size in bytes of the outgoing queue of the socket. |
| BuildInfo | Information about the product's build. |
| CodePage | The system code page used for Unicode to Multibyte translations. |
| LicenseInfo | Information about the current license. |
| MaskSensitive | Whether sensitive data is masked in log messages. |
| UseInternalSecurityAPI | Tells the component whether or not to use the system security libraries or an internal implementation. |
LogFile Parameter (Get-Whois Cmdlet)
The location of a file to which debug information is written.
Syntax
Get-Whois -LogFile string
Remarks
When specified, the cmdlet will log debug information to the file. If the file exists, the information will be appended.Default Value
null
Config Property (Get-Whois Cmdlet)
Specifies one or more configuration settings.
Syntax
Get-Whois -Config string[]
Remarks
The Config parameter takes one or more name-value pairs that represent the name of the configuration setting and value, i.e.: -config "Name=Value"
Default Value
null
Domain Property (Get-Whois Cmdlet)
Gets information about the domain specified.
Syntax
Get-Whois -Domain string
Remarks
Queries the server specified in Server for the domain specified in Domain.
Default Value
""
Parameter Position
1
This is a required parameter.
LocalIP Property (Get-Whois Cmdlet)
The IP address of the local interface to use.
Syntax
Get-Whois -LocalIP string
Remarks
This parameter is useful when the cmdlet is running on a machine that has more than one network interface (each with its own IP address and network access privileges).
Default Value
""
Parameter Alias
LocalAddress
LogFile Property (Get-Whois Cmdlet)
The location of a file to which debug information is written.
Syntax
Get-Whois -LogFile string
Remarks
When specified, the cmdlet will log debug information to the file. If the file exists, the information will be appended.
Default Value
""
Server Property (Get-Whois Cmdlet)
The server to request domain information from.
Syntax
Get-Whois -Server string
Remarks
This property should be set to a valid address running WHOIS services. The default value is "whois.internic.net".
Default Value
"whois.internic.net"
Parameter Alias
WhoisServer
Timeout Property (Get-Whois Cmdlet)
The maximum time allowed for the operation.
Syntax
Get-Whois -Timeout int
Remarks
After the specified interval in seconds, the cmdlet will throw a Timeout error if the operation is not completed.
Default Value
10
DomainInfo Output Object (Get-Whois Cmdlet)
The information that is returned by the Server .
Syntax
Object DomainInfo {string Domain;
string Info;
}
Remarks
Domain contains the domain queried for. Info contains the whois record returned from the server.
Config Settings (Get-Whois Cmdlet)
The cmdlet accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the cmdlet, access to these internal properties is provided through the Config method.TCPClient Config Settings
| ConnectionTimeout: Sets a separate timeout value for establishing a connection.When set, this configuration setting allows you to specify a different timeout value for establishing a connection. Otherwise, the cmdlet will use Timeout for establishing a connection and transmitting/receiving data. | |||||||||||
| FirewallAutoDetect: Tells the cmdlet whether or not to automatically detect and use firewall system settings, if available.This configuration setting is provided for use by cmdlets that do not directly expose Firewall properties. | |||||||||||
| FirewallHost:
Name or IP address of firewall (optional).If a FirewallHost is given, requested connections will be authenticated through the specified firewall
when connecting.
If the FirewallHost setting is set to a Domain Name, a DNS request is initiated. Upon successful termination of the request, the FirewallHost setting is set to the corresponding address. If the search is not successful, an error is returned. Note: This setting is provided for use by cmdlets that do not directly expose Firewall properties. |
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| FirewallPassword:
Password to be used if authentication is to be used when connecting through the firewall.If FirewallHost is specified, the FirewallUser and FirewallPassword settings
are used to connect and authenticate to the given firewall. If the authentication fails, the cmdlet throws an exception.
Note: This setting is provided for use by cmdlets that do not directly expose Firewall properties. |
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| FirewallPort:
The TCP port for the FirewallHost;.The FirewallPort is set automatically when FirewallType is set to a valid value.
Note: This configuration setting is provided for use by cmdlets that do not directly expose Firewall properties. |
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FirewallType:
Determines the type of firewall to connect through.The appropriate values are as follows:
Note: This setting is provided for use by cmdlets that do not directly expose Firewall properties. |
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| FirewallUser:
A user name if authentication is to be used connecting through a firewall.If the FirewallHost is specified, the FirewallUser and FirewallPassword
settings are used to connect and authenticate to the Firewall. If the authentication fails, the cmdlet throws an exception.
Note: This setting is provided for use by cmdlets that do not directly expose Firewall properties. |
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| KeepAliveInterval:
The retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.When set, TCPKeepAlive will automatically be set to True.
A TCP keep-alive packet will be sent after a period of inactivity as
defined by KeepAliveTime. If no acknowledgment is received from the remote host, the keep-alive packet
will be sent again. This configuration setting specifies the interval at which the successive keep-alive packets are sent in milliseconds.
This system default if this value is not specified here is 1 second.
Note: This value is not applicable in macOS. |
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| KeepAliveTime: The inactivity time in milliseconds before a TCP keep-alive packet is sent.When set, TCPKeepAlive will automatically be set to True. By default, the operating system will determine the time a connection is idle before a Transmission Control Protocol (TCP) keep-alive packet is sent. This system default if this value is not specified here is 2 hours. In many cases, a shorter interval is more useful. Set this value to the desired interval in milliseconds. | |||||||||||
| Linger:
When set to True, connections are terminated gracefully.This property controls how a connection is closed. The default is True.
In the case that Linger is True (default), two scenarios determine how long the connection will linger. In the first, if LingerTime is 0 (default), the system will attempt to send pending data for a connection until the default IP timeout expires. In the second scenario, if LingerTime is a positive value, the system will attempt to send pending data until the specified LingerTime is reached. If this attempt fails, then the system will reset the connection. The default behavior (which is also the default mode for stream sockets) might result in a long delay in closing the connection. Although the cmdlet returns control immediately, the system could hold system resources until all pending data are sent (even after your application closes). Setting this property to False forces an immediate disconnection. If you know that the other side has received all the data you sent (e.g., by a client acknowledgment), setting this property to False might be the appropriate course of action. |
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| LingerTime: Time in seconds to have the connection linger. LingerTime is the time, in seconds, the socket connection will linger. This value is 0 by default, which means it will use the default IP timeout. | |||||||||||
| LocalHost:
The name of the local host through which connections are initiated or accepted.
The LocalHost setting contains the name of the local host
as obtained by the gethostname() system call, or if the
user has assigned an IP address, the value of that address.
In multi-homed hosts (machines with more than one IP interface) setting LocalHost to the value of an interface will make the cmdlet initiate connections (or accept in the case of server cmdlets) only through that interface. If the cmdlet is connected, the LocalHost setting shows the IP address of the interface through which the connection is made in internet dotted format (aaa.bbb.ccc.ddd). In most cases, this is the address of the local host, except for multi-homed hosts (machines with more than one IP interface). |
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| LocalPort:
The port in the local host where the cmdlet binds.
This must be set before a connection is
attempted. It instructs the cmdlet to bind to a specific
port (or communication endpoint) in the local machine.
Setting this to 0 (default) enables the system to choose a port at random. The chosen port will be shown by LocalPort after the connection is established. LocalPort cannot be changed once a connection is made. Any attempt to set this when a connection is active will generate an error. This; setting is useful when trying to connect to services that require a trusted port in the client side. An example is the remote shell (rsh) service in UNIX systems. |
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| MaxLineLength:
The maximum amount of data to accumulate when no EOL is found.MaxLineLength is the size of an internal buffer, which holds received data while waiting for an EOL
string.
If an EOL string is found in the input stream before MaxLineLength bytes are received, the DataIn event is fired with the EOL parameter set to True, and the buffer is reset. If no EOL is found, and MaxLineLength bytes are accumulated in the buffer, the DataIn event is fired with the EOL parameter set to False, and the buffer is reset. The minimum value for MaxLineLength is 256 bytes. The default value is 2048 bytes. |
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| MaxTransferRate: The transfer rate limit in bytes per second.This configuration setting can be used to throttle outbound TCP traffic. Set this to the number of bytes to be sent per second. By default, this is not set and there is no limit. | |||||||||||
| ProxyExceptionsList:
A semicolon separated list of hosts and IPs to bypass when using a proxy.This configuration setting optionally specifies a semicolon-separated list of hostnames or IP addresses to bypass when a proxy is in use.
When requests are made to hosts specified in this property, the proxy will not be used. For instance:
www.google.com;www.nsoftware.com |
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| TCPKeepAlive:
Determines whether or not the keep alive socket option is enabled.If set to True, the socket's keep-alive option is enabled and keep-alive packets will be sent periodically
to maintain the connection. Set KeepAliveTime and KeepAliveInterval to
configure the timing of the keep-alive packets.
Note: This value is not applicable in Java. |
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| TcpNoDelay:
Whether or not to delay when sending packets.
When true, the socket will send all data that is ready to send at once. When
false, the socket will send smaller buffered packets of data at small intervals.
This is known as the Nagle algorithm.
By default, this config is set to false. |
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UseIPv6:
Whether to use IPv6.When set to 0 (default), the cmdlet will use IPv4 exclusively.
When set to 1, the cmdlet will use IPv6 exclusively. To instruct the cmdlet to prefer IPv6 addresses, but use IPv4 if IPv6 is not supported on the system, this setting should be set to 2. The default value is 0.
Possible values are:
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Socket Config Settings
| AbsoluteTimeout:
Determines whether timeouts are inactivity timeouts or absolute timeouts.If AbsoluteTimeout is set to True, any method which does not complete within Timeout seconds
will be aborted. By default, AbsoluteTimeout is False, and the timeout is an inactivity timeout.
Note: This option is not valid for UDP ports. |
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| FirewallData: Used to send extra data to the firewall.When the firewall is a tunneling proxy, use this property to send custom (additional) headers to the firewall (e.g. headers for custom authentication schemes). | |
| InBufferSize:
The size in bytes of the incoming queue of the socket.
This is the size of an internal queue in the TCP/IP stack.
You can increase or decrease its size depending on the amount
of data that you will be receiving. Increasing the value of the
InBufferSize setting can provide significant improvements in
performance in some cases.
Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the cmdlet is activated the InBufferSize reverts to its defined size. The same happens if you attempt to make it too large or too small. |
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| OutBufferSize:
The size in bytes of the outgoing queue of the socket.This is the size of an internal queue in the TCP/IP stack.
You can increase or decrease its size depending on the amount
of data that you will be sending. Increasing the value of the
OutBufferSize setting can provide significant improvements in
performance in some cases.
Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the cmdlet is activated the OutBufferSize reverts to its defined size. The same happens if you attempt to make it too large or too small. |
Base Config Settings
| BuildInfo: Information about the product's build.When queried, this setting will return a string containing information about the product's build. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| CodePage:
The system code page used for Unicode to Multibyte translations.The default code page is Unicode UTF-8 (65001).
The following is a list of valid code page identifiers:
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LicenseInfo:
Information about the current license.When queried, this setting will return a string containing information about the license this instance of a cmdlet is using. It will return the following information:
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| MaskSensitive:
Whether sensitive data is masked in log messages.In certain circumstances it may be beneficial to mask sensitive data, like passwords, in log messages. Set this to true to mask sensitive data. The default is false.
This setting only works on these cmdlets: AS3Receiver, AS3Sender, Atom, Client(3DS), FTP, FTPServer, IMAP, OFTPClient, SSHClient, SCP, Server(3DS), Sexec, SFTP, SFTPServer, SSHServer, TCPClient, TCPServer. |
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| UseInternalSecurityAPI:
Tells the cmdlet whether or not to use the system security libraries or an internal implementation.
When set to false, the cmdlet will use the system security libraries by default to perform cryptographic functions where applicable.
In this case, calls to unmanaged code will be made. In certain environments this is not desirable.
To use a completely managed security implementation set this setting to true.
Setting this setting to true tells the cmdlet to use the internal implementation instead of using the system security libraries. On Windows, this setting is set to false by default. On Linux/macOS, this setting is set to true by default. If using the .NET Standard Library, this setting will be true on all platforms. The .NET Standard library does not support using the system security libraries. Note: This setting is static. The value set is applicable to all cmdlets used in the application. When this value is set the product's system DLL is no longer required as a reference, as all unmanaged code is stored in that file. |