I found (at least) one userid within the *SENATE.GOV domain.
It had a host name of BOND.  When doing a
 
         dig bond.senate.gov mx
 
it pointed to the gateway.senate.gov.
 
--  co-owner INFOSYS, TQM-L, CPARK-L, ERAPPA-L, JANITORS, LDBASE-L, et -L
[log in to unmask]     "Laissez les bon temps rouler"     +1 814 863 1843
31 Shields Bldg. -- Penn State Univ -- University Park, PA 16802-1202 USA