Nltest, from the Support Tools, has several options to list site information.

NOTE: Install the Windows 2000 Support Tools from the Support\Tools folder on the Windows 2000 Professional or Windows 2000 Server CD-ROM.

To list the site of a domain controller, open a CMD prompt and type:

nltest /server: /dsgetsite

You will receive output similar to:

SITE01
The command completed successfully

To list all the DCs and their corresponding sites, type:

nltest /dclist:

You will receive output similar to:

Get list of DCs in domain from \\

     .            \[DS\] Site: SITE01
     .            \[DS\] Site: SITE01
     .            \[DS\] Site: SITE01
     .            \[DS\] Site: SITE01
     .      \[PDC\] \[DS\] Site: SITE01
     .            \[DS\] Site: SITE02
     .            \[DS\] Site: SITE02

The command completed successfully
NOTE:See the Support Tools documentation.