Using the list of senators Abaddon posted above, I compiled this list which includes the senators' D.C. phone numbers. I also included a city/zip code from their respective states in case you are asked to mention a zip code. I copied the zip codes from starsnmoons. I hope this makes calling easier for all of you.

Sen. Susan Collins (R-Maine)
(202) 224-2523
Augusta 04330

Sen. George LeMieux (R-Florida)
(202) 224-3041
Tallahassee 32301

Sen. Olympia Snowe (R-Maine)
(202) 224-5344
Augusta 04330

Sen. Scott Brown (R-Massachusetts)
(202) 224-4543
Boston 02108

Sen. Mark Pryor (D-Arkansas)
(202) 224-2353
Little Rock 72201

Sen. Ben Nelson (D-Nebraska)
(202) 224-6551
Lincoln 68501

Sen. Robert Bennett (R-Utah)
(202) 224-5444
Salt Lake City 84101

Sen. Sam Brownback (R-Kansas)
(202) 224-6521
Topeka 66601

Sen. Kay Bailey Hutchison (R-Texas)
(202) 224-5922
Austin 73301