| Texarkana Police and Bowie and Miller County Sheriff | Bowie | Public Safety | 34 |
| Houston Police Department - All Districts | Harris | Public Safety | 27 |
| Amarillo Police and Fire | Potter | Public Safety | 26 |
| Orange County Public Safety | Orange | Public Safety | 20 |
| Jefferson County Public Safety | Jefferson | Public Safety | 19 |
| Wharton County Public Safety | Wharton | Public Safety | 19 |
| Smith County Sheriff, Tyler Police, and Tyler Fire | Smith | Public Safety | 18 |
| Bastrop County Law Enforcement / Fire / EMS | Bastrop | Public Safety | 18 |
| Lamar County Public Safety Dispatch | Lamar | Public Safety | 18 |
| Galveston and La Marque Public Safety | Galveston | Public Safety | 15 |
| Caldwell County Sheriff, Lockhart and Luling Police | Caldwell | Public Safety | 14 |
| Guadalupe County Public Safety | Guadalupe | Public Safety | 14 |
| Jim Wells County Public Safety | Jim Wells | Public Safety | 12 |
| Houston County Fire/Law Dispatch, City of Crockett Law Dispatch | Houston | Public Safety | 12 |
| Harris County Law Enforcement - North | Harris | Public Safety | 11 |
| Nolan County Public Safety | Nolan | Public Safety | 10 |
| New Braunfels Fire Department | Comal | Public Safety | 10 |
| Kendall County Public Safety | Kendall | Public Safety | 10 |
| DeWitt County Sheriff and Fire, Cuero Police and EMS | DeWitt | Public Safety | 9 |
| Bosque and Surrounding Counties Public Safety | Bosque | Public Safety | 8 |
| Hardin County Public Safety | Hardin | Public Safety | 8 |
| Nacogdoches Public Safety | Nacogdoches | Public Safety | 8 |
| Parker County Public Safety | Parker | Public Safety | 8 |
| Matagorda County Public Safety | Matagorda | Public Safety | 8 |
| Dallas City Police - All Divisions Dispatch | Dallas | Public Safety | 8 |
| Killeen Police and Fire | Bell | Public Safety | 7 |
| Rusk County Public Safety | Rusk | Public Safety | 7 |
| Deaf Smith County Sheriff, Hereford Police and Fire | Deaf Smith | Public Safety | 7 |
| Nocona Fire and Police Dispatch | Montague | Public Safety | 6 |
| Brazos County Area Fire and EMS | Brazos | Public Safety | 6 |
| Johnson/Tarrant County Fire | Johnson | Public Safety | 6 |
| Cy-Fair Fire and EMS | Harris | Public Safety | 6 |
| Dallas City Fire and Rescue Dispatch | Dallas | Public Safety | 5 |
| Wylie Police and Fire | Collin | Public Safety | 5 |
| Uvalde County Law Enforcement (GATRRS) | Uvalde | Public Safety | 5 |
| San Antonio Fire Dept Automated Dispatch | Bexar | Public Safety | 4 |
| North Harris, Montgomery, Waller and Walker Counties Fire and EMS | Harris | Public Safety | 4 |
| Bexar County Fire and EMS | Bexar | Public Safety | 4 |
| Wise County Fire/EMS | Wise | Public Safety | 4 |
| Bandera County Public Safety | Bandera | Public Safety | 4 |
| Sabine County Firefighters Association | Sabine | Public Safety | 4 |
| Falls County Fire Association | Falls | Public Safety | 4 |
| Medina County Public Safety | Medina | Public Safety | 4 |
| Hood County Public Safety | Hood | Public Safety | 4 |
| Somervell County Public Safety | Somervell | Public Safety | 4 |
| Taylor County Fire and EMS Departments | Taylor | Public Safety | 4 |
| Central Panhandle Counties Public Safety | Armstrong | Public Safety | 4 |
| Wichita Falls Area Law Enforcement | Archer | Public Safety | 3 |
| Brown County Public Safety | Brown | Public Safety | 3 |
| Travis County Law Enforcement | Travis | Public Safety | 3 |
| Collin County Sheriff, Plano, Allen, Murphy, Colony, Frisco, and Prosper Police | Collin | Public Safety | 3 |
| Jackson County Public Safety | Jackson | Public Safety | 3 |
| San Patricio County Sheriff Dispatch | San Patricio | Public Safety | 3 |
| Union and North Dallam Counties Public Safety | Dallam | Public Safety | 3 |
| Walker County Public Safety | Walker | Public Safety | 3 |
| Fannin County Fire Dispatch | Fannin | Public Safety | 3 |
| Hidalgo County Public Safety | Hidalgo | Public Safety | 3 |
| Collin County Public Safety | Collin | Public Safety | 3 |
| Jim Hogg County Sheriff Dispatch. | Jim Hogg | Public Safety | 3 |
| Rockwall City Police, Fire, and EMS | Rockwall | Public Safety | 3 |
| Bryan/College Station Area Law Enforcement | Brazos | Public Safety | 3 |
| Washington County Public Safety | Washington | Public Safety | 3 |
| Snyder Fire | Scurry | Public Safety | 3 |
| Graham Fire | Young | Public Safety | 3 |
| Webster Area Public Safety | Harris | Public Safety | 2 |
| Tulia Sheriff and Fire | Swisher | Public Safety | 2 |
| Atascosa County Public Safety | Atascosa | Public Safety | 2 |
| Comal County Fire/EMS Dispatch | Comal | Public Safety | 2 |
| Stephenville & Erath County Fire/EMS/VFDs | Erath | Public Safety | 2 |
| Waller County Fire and EMS | Waller | Public Safety | 2 |
| Harris County Sheriff's Department Dispatch | Harris | Public Safety | 2 |
| Fort Worth Fire Department | Tarrant | Public Safety | 2 |
| Hill County Public Safety | Hill | Public Safety | 2 |
| Waco Police | McLennan | Public Safety | 2 |
| The Colony Police, Fire and EMS | Denton | Public Safety | 2 |
| Jasper ESD Dispatch | Jasper | Public Safety | 2 |
| Randall County Fire | Randall | Public Safety | 2 |
| Miller County, AR / Bowie County, TX Public Safety | Bowie | Public Safety | 2 |
| Houston Fire - Digital | Harris | Public Safety | 2 |
| San Saba Volunteer Fire | San Saba | Public Safety | 2 |
| Cameron Fire | Milam | Public Safety | 2 |
| Plano Fire | Collin | Public Safety | 2 |
| Bryan Fire | Brazos | Public Safety | 2 |
| Thorndale Fire | Milam | Public Safety | 2 |
| Hays County Fire and EMS - North | Hays | Public Safety | 2 |
| Kleberg County Fire | Kleberg | Public Safety | 1 |
| McGregor Fire | McLennan | Public Safety | 1 |
| Mathis Volunteer Fire | San Patricio | Public Safety | 1 |
| Live Oak County Vol Med Resp Team | Live Oak | Public Safety | 1 |
| Coryell County Sheriff and Gatesville Fire | Coryell | Public Safety | 1 |
| Refugio Fire | Refugio | Public Safety | 1 |
| Woodsboro Fire | Refugio | Public Safety | 1 |
| Allstarlink Node 55763 (11CATS Network) | Tarrant | Amateur Radio | 1 |
| Port Aransas Public Safety | Nueces | Public Safety | 1 |
| Seabrook Public Safety | Harris | Public Safety | 1 |
| Texarkana Fire Departments | Bowie | Public Safety | 1 |
| Ingleside on the Bay Fire | Nueces | Public Safety | 1 |
| Cherokee Volunteer Fire | San Saba | Public Safety | 1 |
| Gray VFD | Marion | Public Safety | 1 |
| Shive Fire | Hamilton | Public Safety | 1 |