| Name | Type | County No | County Name | Service Area | Contact Type | First Contact | Last Contact | Email | Address1 | Address2 | P.O. Box | City | State | Zip Code | Phone No. | 800 No. |
| Dairyland Power Cooperative | Electric | 03 | Allamakee | | | Kurt | Childs | kdc@dairynet.com | 2615 East Avenue S | | 817 | LaCrosse | WI | 54601 | 608-788-4000 | |
| Dairyland Power Cooperative | Electric | 22 | Clayton | | | Kurt | Childs | kdc@dairynet.com | 2615 East Avenue S | | 817 | LaCrosse | WI | 54601 | 608-788-4000 | |
| Dairyland Power Cooperative | Electric | 33 | Fayette | | | Kurt | Childs | | 2615 East Avenue S | | 817 | La Crosse | WI | 54602-0817 | 608-788-4000 | |
| ITC Midwest LLC | Electric Transmission | 00 | Statewide | See Comments | Main | Chad | Levi | clevi@ltctransco.com | 201 3rd Avenue SE | Suite 300 | | Cedar Rapids | IA | 52402-1513 | 319-297-6765 | |
| Alliant Energy | Gas | 00 | Statewide | Statewide | Main | Jason A. | Hogan | jasonhogan@alliantenergy.com | 4902 North Biltmore | | 77007 | Madison | WI | 53707-1007 | 608-458-4871 | |
| Alliant Energy | Electric | 00 | Statewide | Statewide | Main | Jason A. | Hogan | jasonhogan@alliantenergy.com | 4902 North Biltmore | | 77007 | Madison | WI | 53707-1007 | 608-458-4871 | |
| Andrew Telephone Company, Inc. | Cable TV | 49 | Jackson | Andrew | Main | Milton | Cornelius | andrtel@netins.net | 18 West Benton | | 259 | Andrew | IA | 52030-0510 | 563-672-3277 | |
| ATC Cablevision Company | Cable TV | 21 | Clay | Gillett Grove | Main | Joel | Schmidt | jschmidt@ncn.net | 1405 Silver Lake | | 248 | Ayrshire | IA | 50515-0248 | 712-426-2815 | |
| ATC Cablevision Company | Cable TV | 55 | Kossuth | Whittemore | Main | Joel | Schmidt | jschmidt@ncn.net | 1405 Silver Lake | | 248 | Ayrshire | IA | 50515-0248 | 712-426-2815 | |
| ATC Cablevision Company | Cable TV | 74 | Palo Alto | Cylinder | Main | Joel | Schmidt | jschmidt@ncn.net | 1405 Silver Lake | | 248 | Ayrshire | IA | 50515-0248 | 712-426-2815 | |
| ATC Cablevision Company | Cable TV | 74 | Palo Alto | Ayrshire | Main | Joel | Schmidt | jschmidt@ncn.net | 1405 Silver Lake | | 248 | Ayrshire | IA | 50515-0248 | 712-426-2815 | |
| Atchison-Holt Electric Cooperative | Electric | 36 | Fremont | | Main | Jerry | Clemens | | 18585 Industrial Road | | 160 | Rock Port | MO | 64482-0160 | 660-744-5344 | |
| Atchison-Holt Electric Cooperative | Electric | 73 | Page | | Main | Jerry | Clemens | | 18585 Industrial Road | | 160 | Rock Port | MO | 64482-0160 | 660-744-5344 | |
| Atkins Telephone Company, Inc. | Telephone | 06 | Benton | Atkins | Main | Jerry | Spaight | office@atkinstelephone.com | 85 Main Avenue | | 157 | Atkins | IA | 52206 | 319-446-7331 | |
| Boone Valley Electric Cooperative | Electric | 46 | Humboldt | | Main | Curtis | Meinke | bvec@speednet.com | 1431 160th Street | | | Goldfield | IA | 50542 | 515-825-3998 | |
