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| NAIC# | Company Name | Business Type | Home Office |
| 34789 | AIG Centennial Insurance Company | Property/Casualty | Pennsylvania |
| 43974 | AIG Indemnity Insurance Company | Property/Casualty | Pennsylvania |
| 36587 | AIG National Insurance Company Inc | Property/Casualty | New York |
| 22225 | AIG Preferred Insurance Company | Property/Casualty | Pennsylvania |
| 20796 | AIG Premier Insurance Company | Property/Casualty | Pennsylvania |
| 11242 | Allied Eastern Indemnity Company | Property/Casualty | Pennsylvania |
| 11710 | Allied Professionals Insurance Company RRG | Property/Casualty | Arizona |
| 42579 | Allied Property & Casualty Insurance Company | Property/Casualty | Iowa |
| 12013 | Allied Services Risk Retention Group | Property/Casualty | South Carolina |
| 19489 | Allied World Assurity Company US Inc | Property/Casualty | Delaware |
| 29688 | Allstate Fire & Casualty Insurance Company | Property/Casualty | Illinois |
| 19240 | Allstate Indemnity Company | Property/Casualty | Illinois |
| 19232 | Allstate Insurance Company | Property/Casualty | Illinois |
| 17230 | Allstate Property & Casualty Insurance Company | Property/Casualty | Illinois |
| 10111 | American Bankers Insurance Company of Florida | Property/Casualty | Florida |
| 13501 | Brethren Mutual Insurance Company | Property/Casualty | Maryland |
| 26263 | Erie Insurance Company | Property/Casualty | Pennsylvania |
| 16233 | Erie Insurance Company of NY | Property/Casualty | New York |
| 26271 | Erie Insurance Exchange | Property/Casualty | Pennsylvania |
| 26830 | Erie Insurance Property of Casualty Company | Property/Casualty | Pennsylvania |
| 11061 | Farmers Fire Insurance Company | Property/Casualty | Pennsylvania |
| 17108 | Farmers Mutual FIC of Mccandless | Property/Casualty | Pennsylvania |
| 17094 | Farmers Mutual Fire Insurance Company of Marble | Property/Casualty | Pennsylvania |
| 13897 | Farmers Mutual Hail Insurance Company of IA | Property/Casualty | Iowa |
| 17124 | Farmers Mutual Insurance Company | Property/Casualty | Pennsylvania |
| 10806 | Farmers New Century Insurance Company | Property/Casualty | Illinois |
| 21792 | Infinity Casualty Insurance Company | Property/Casualty | Ohio |
| 10061 | Infinity Indemnity Insurance Company | Property/Casualty | Indiana |
| 22268 | Infinity Insurance Company | Property/Casualty | Indiana |
| 10068 | Infinity National Insurance Company | Property/Casualty | Indiana |
| 37001 | Infinity Premier Insurance Company | Property/Casualty | Indiana |
| 38873 | Infinity Security Insurance Company | Property/Casualty | Indiana |
| 20260 | Infinity Select Insurance Company | Property/Casualty | Indiana |
| 31925 | Infinity Specialty Insurance Company | Property/Casualty | Ohio |
| 12599 | Infinity Standard Insurance Company | Property/Casualty | Indiana |
| 39357 | MetLife Insurance Company of CT | Property/Casualty | Connecticut |
| 26093 | Nationwide Affinity Company of America | Property/Casualty | Ohio |
| 28223 | Nationwide Agribusiness Insurance Company | Property/Casualty | Iowa |
| 10723 | Nationwide Assur Company | Property/Casualty | Wisconsin |
| 23760 | Nationwide General Insurance Company | Property/Casualty | Ohio |
| 25453 | Nationwide Insurance Company of America | Property/Casualty | Wisconsin |
| 23779 | Nationwide Mutual Fire Insurance Company | Property/Casualty | Ohio |
| 23787 | Nationwide Mutual Insurance Company | Property/Casualty | Ohio |
| 37877 | Nationwide Property & Casualty Insurance Company | Property/Casualty | Ohio |
| 11851 | Progressive Advanced Insurance Company | Property/Casualty | Ohio |
| 24260 | Progressive Casualty Insurance Company | Property/Casualty | Ohio |
| 44288 | Progressive Choice Insurance Company | Property/Casualty | Ohio |
| 16322 | Progressive Direct Insurance Company | Property/Casualty | Ohio |
| 24279 | Progressive Max Insurance Company | Property/Casualty | Ohio |
| 38628 | Progressive Northern Insurance Company | Property/Casualty | Wisconsin |
| 32786 | Progressive Specialty Insurance Company | Property/Casualty | Ohio |
| 19530 | State Auto National Insurance Company | Property/Casualty | Ohio |
| 25127 | State Auto Property & Casualty Insurance Company | Property/Casualty | South Carolina |
| 25135 | State Automobile Mutual Insurance Company | Property/Casualty | Ohio |
| 25143 | State Farm Fire & Casualty Company | Property/Casualty | Illinois |
| 25151 | State Farm General Insurance Company | Property/Casualty | Illinois |
| 25178 | State Farm Mutual Auto Insurance Company | Property/Casualty | Illinois |
| 11505 | Tuscarora Wayne Insurance Company | Property/Casualty | Pennsylvania |
| 17825 | Tuscarora Wayne Mutual Insurance Company | Property/Casualty | Pennsylvania |