To find office numbers at the DSRC visit: NOAA Locator

Log in using your NOAA credentials (please note this is only available to those with active NOAA accounts and office numbers should not be shared or distributed publicly):

You will be prompted for your YubiKey or CAC (use only CAC if using GFE login with a CAC). 

Enter at least two fields and hit search:

This will take you to the personnel screen: 

Select the person you wish to view (if there is more than one match for your search criteria). 

This will take you to the individual page where all data is located. Office numbers are listed here.