Insurance Companies Code Order Insurance Companies Current Listing: Numerical Order or Alphabetical Order Company Company Name Code 442 Greater New York Mutual Insurance Company 443 NOVA Causalty Company 444 Green Mountain Insurance Company, The 446 American Modern Select Insurance Company 449 Gulf Insurance Company 451 Hudson Insurance Company 453 Hanover American Insurance Company, The 454 Allmerica Financial Alliance Insurance Company 455 Hanover Insurance Company, The 460 Harleysville Mutual Insurance Company 461 Sentinel Insurance Company LTD 462 Sentry Insurance a Mutual Company 463 Greenwich Insurance Company 465 Harco National Insurance Company 467 Hartford Casualty Insurance Company 468 Hartford Fire Insurance Company 469 Hartford Accident and Indemnity Company 474 Holyoke Mutual Insurance Company in Salem 476 Holyoke Mutual Insurance Company in Salem 481 Horace Mann Insurance Company 483 Houston General Insurance Company 486 Harleysville Preferred Insurance Company 495 Insurance Company of Greater New York 499 Insurance Company of North America Appendix A-0 A:9http://www.commauto.com/aboutcar/codenumbers.aspx?Sort=CoNo http://www.commauto.com/aboutcar/codenumbers.aspx?Sort=CoName