| Illinois Valley Regional Police, Fire and EMS Dispatch | La Salle | Public Safety | 64 |
| Chicago Police Department Zone 08 | Cook | Public Safety | 60 |
| Sangamon County Public Safety | Sangamon | Public Safety | 54 |
| Peoria Police Prep 1 | Peoria | Public Safety | 41 |
| Macoupin and Montgomery Counties Public Safety Dispatch | Macoupin | Public Safety | 35 |
| Chicago Fire - Digital | Cook | Public Safety | 31 |
| Bureau County Sheriff, Fire and EMS | Bureau | Public Safety | 25 |
| Tazewell Sheriff/Pekin Police Main | Tazewell | Public Safety | 25 |
| Davenport and Quad Cities Metro Police, Fire / EMS | Rock Island | Public Safety | 21 |
| LaSalle, Livingston Marshall Counties Sheriff, Fire and EMS | La Salle | Public Safety | 21 |
| Chicago Police Department Zone 10 | Cook | Public Safety | 21 |
| Franklin, Perry, Jackson, Williamson, and Jefferson Counties Police, Fire and EMS | Franklin | Public Safety | 20 |
| Salem Fire and Surrounding Fire, Police & EMS | Marion | Public Safety | 19 |
| Centralia Police, Fire & EMS Dispatch | Marion | Public Safety | 19 |
| Bloomington and Normal Fire | McLean | Public Safety | 18 |
| West Central IL and North East Mo Counties Public Safety | Adams | Public Safety | 15 |
| South East Iowa, West Central Illinois Public Safety | Hancock | Public Safety | 15 |
| Alton Police, Fire, EMS and Public Works | Madison | Public Safety | 15 |
| Winnebago County Public Safety | Winnebago | Public Safety | 14 |
| Elgin Fire | Kane | Public Safety | 13 |
| LaSalle, Marshall, Bureau and Putnam Counties Fire and EMS Departments | Bureau | Public Safety | 13 |
| McHenry County Sheriff Dispatch | McHenry | Public Safety | 13 |
| Chicago Police Department Zone 04 | Cook | Public Safety | 13 |
| Granite, Pontoon, Madison (City), Mitchell, Long Lake | Madison | Public Safety | 12 |
| Boone County Fire Dispatch | Boone | Public Safety | 12 |
| Dekalb & Southern Kane County Public Safety. | DeKalb | Public Safety | 12 |
| Peoria City Fire Dispatch - PEOR 1 and 2 and 3 | Peoria | Public Safety | 10 |
| Chicago Police Department Zone 03 | Cook | Public Safety | 10 |
| Peoria County Sheriff Dispatch | Peoria | Public Safety | 9 |
| Illinois Valley Regional Fire and EMS Dispatch | La Salle | Public Safety | 9 |
| Chicago Police Department Zone 06 | Cook | Public Safety | 9 |
| Grundy and Will Counties Public Safety | Grundy | Public Safety | 8 |
| Illinois State Police Troops 1,2,3,4,5 | Bureau | Public Safety | 8 |
| Pike County Fire, EMS, and Law Enforcement | Pike | Public Safety | 8 |
| Chicago Police Department Zone 01 | Cook | Public Safety | 8 |
| Red Center Dispatch | Cook | Public Safety | 8 |
| Peoria County Fire - Digital | Peoria | Public Safety | 7 |
| East Alton, Hartford, Roxana, S. Roxana and Wood River Police / Fire | Madison | Public Safety | 7 |
| Chicago Police Department Zone 11 | Cook | Public Safety | 7 |
| Wabash County Sheriff, Fire and EMS, Mount Carmel Police | Wabash | Public Safety | 6 |
| Edwardsville, SIUE, Glen Carbon, Madison County, ISPERN Police and Fire | Madison | Public Safety | 6 |
| Lee, Clark and Hancock Counties Public Safety | Hancock | Public Safety | 6 |
| Monroe County Sheriff and EMA, Waterloo Fire | Monroe | Public Safety | 6 |
| DuComm Fire - North | DuPage | Public Safety | 6 |
| La Salle County Sheriff and Fire Departments | La Salle | Public Safety | 6 |
| Chicago Police Department Zone 07 | Cook | Public Safety | 6 |
| Carroll County Sheriff and Fire | Carroll | Public Safety | 6 |
| Northern Illinois and Southern Wisconsin MABAS | Cook | Public Safety | 6 |
| Collinsville, Maryville Police & Fire | Madison | Public Safety | 5 |
| Randolph, Jackson, Perry and Genevieve Counties Fire, Law and EMS | Jackson | Public Safety | 5 |
| Chicago Police Department Zone 09 | Cook | Public Safety | 5 |
| Chicago Police Department Zone 12 | Cook | Public Safety | 5 |
| Stephenson County Public Safety | Stephenson | Public Safety | 5 |
| Fire West Dispatch - Harvard, Marengo, Woodstock, Union | McHenry | Public Safety | 5 |
| Pontiac Fire | Livingston | Public Safety | 4 |
| Cook County ECom Fire Dispatch | Cook | Public Safety | 4 |
| Effingham County Sheriff and EMS, Effingham City Police | Effingham | Public Safety | 4 |
| Kendall County Public Safety | Kendall | Public Safety | 4 |
| Lake and Kenosha Counties Fire | Lake | Public Safety | 4 |
| DuComm Fire Dispatch and Ops (All) | DuPage | Public Safety | 4 |
| Fire East Dispatch - Cary, Fox River Grove, McHenry and Nunda | McHenry | Public Safety | 4 |
| WESCOM Fire - North | Will | Public Safety | 3 |
| Troy, St. Jacob Police & Fire | Madison | Public Safety | 3 |
| Fire South Dispatch - Algonquin-LITH, Crystal Lake, Huntley | Kane | Public Safety | 3 |
| Illinois State Police - Troop 8 Collinsville (MetroEast) | Bond | Public Safety | 3 |
| Northern Illinois Railroads | Boone | Rail | 3 |
| QuadCom Fire Departments | Kane | Public Safety | 3 |
| Illinois State Police, IDOT, EMA and LaSalle County Sheriff | Bureau | Public Safety | 3 |
| Southern IL and Western KY Public Safety | Massac | Public Safety | 3 |
| Bureau, LaSalle, Marshall, and Putnam Counties Law Enforcement | Bureau | Public Safety | 3 |
| Seneca and Grundy County Fire and EMS | Grundy | Public Safety | 3 |
| Fulton County Public Safety | Fulton | Public Safety | 3 |
| Edgar County Fire & EMS | Edgar | Public Safety | 3 |
| Galesburg Police and EMS Dispatch | Knox | Public Safety | 3 |
| Madison and Clinton Counties Sheriff, Fire and EMS | Clinton | Public Safety | 3 |
| Will and DuPage Counties Police/Fire | DuPage | Public Safety | 3 |
| Douglas County Public Safety | Douglas | Public Safety | 3 |
| Chicago Suburbs South/SW | Will | Public Safety | 2 |
| Des Moines County Public Safety / Henderson IL County | Henderson | Public Safety | 2 |
| Rochelle Fire Dispatch | Ogle | Public Safety | 2 |
| Savanna Area Rail/Marine | Carroll | Rail | 2 |
| Kankakee County Fire and EMS Dispatch | Kankakee | Public Safety | 2 |
| Lake County Quad 1 Fire Departments | Lake | Public Safety | 2 |
| Addison Consolidated Fire Dispatch - South | DuPage | Public Safety | 2 |
| DuComm Fire - East | DuPage | Public Safety | 2 |
| Christian County Public Safety | Christian | Public Safety | 2 |
| Northwest Central Dispatch (NWCD) - FD3 and Firegrounds | Cook | Public Safety | 2 |
| WESCOM Fire Three | Will | Public Safety | 2 |
| Palos Heights Police, Fire/Orland Park Fire, EMS | Cook | Public Safety | 2 |
| Washington County Sheriff, Fire and EMS, Mt. Vernon Fire Dispatch | Washington | Public Safety | 2 |
| Fire North Dispatch - Hebron, Richmond, Spring Grove, Wonder Lake | McHenry | Public Safety | 2 |
| Clay County Sheriff and EMS, Wayne County Sheriff and EMS, Flora Police, Fairfield Police, Fire, and EMS, ISP Districts 12,13, and 19 | Clay | Public Safety | 2 |
| Chicago Police Department Zone 02 | Cook | Public Safety | 2 |
| Chicago Police Department Zone 13 | Cook | Public Safety | 2 |
| Northwest Central Dispatch (NWCD) - FD2 and Firegrounds | Cook | Public Safety | 1 |
| Hamilton County Public Safety | Hamilton | Public Safety | 1 |
| Western Springs Fire | Cook | Public Safety | 1 |
| MABAS 27 | Cook | Public Safety | 1 |
| Illinois State Police Troop 9 | Clark | Public Safety | 1 |
| Ogle County Fire | Ogle | Public Safety | 1 |