Available Participants
| Facility | HAN Site Code | HAN IP Address | Internet IP Address |
| Abilene-Taylor County Public Health District | 1820 | 10.20.3.55 | 168.39.183.120 |
| Amarillo Bi-City-County Health District | 1821 | 10.21.3.55 | 168.39.183.121 |
| Andrews County Health Dept. | 1822 | 10.22.3.55 | 168.39.183.122 |
| Angelina County & Cities Health District | 1886 | 10.86.3.55 | 168.39.183.186 |
| Austin Travis County Health & Human Services Dept. | 1824 | 10.24.3.55 | 168.39.183.124 |
| Bandera County Public Health Ctr. | 1825 | 10.25.3.55 | 168.39-183.125 |
| Baytown Health Dept. City of | 9002 | 10.02.3.55 | 168.39.183.102 |
| Beaumont Public Health Dept. | 1826 | 10.26.3.55 | 168.39.183.126 |
| Bell County Public Health District | 1827 | 10.27.3.55 | 168.39.183.127 |
| Brazoria County Health Dept. | 1829 | 10.29.3.55 | 168.39.183.129 |
| Brazos County Health Dept. | 1828 | 10.28.3.55 | 168.39.183.128 |
| Brownwood- Brown County Health Dept. | 1830 | 10.30.3.55 | 168.39.183.130 |
| Calhoun County Health Dept. | 1831 | 10.31.3.55 | 168.39.183.131 |
| Cameron County Health Dept. | 1832 | 10.32.3.55 | 168.39.183.132 |
| Cass County Health Dept. | 1833 | 10.33.3.55 | 168.39.183.133 |
| Chambers County Health Dept. | 1834 | 10.34.3.55 | 168.39-183.134 |
| Cherokee County Health Dept. | 1835 | 10.35.3.55 | 168.39.183.135 |
| Collin County Health Care Services | 1836 | 10.36.3.55 | 168.39.183.136 |
| Comal County Office of Public Health | 1837 | 10.37.3.55 | 168.39.183.137 |
| Corpus Christi- Nueces County Public Health District | 1838 | 10.38.3.55 | 168.39.183.138 |
| Corsicana- Navarro County Public Health District | 1839 | 10.39.3.55 | 168.39.183.139 |
| Cuero-Dewitt County Health Dept. | 1840 | 10.40.3.55 | 168.39.183.140 |
| Dallas County Dept. of Health & Human Services | 1841 | 10.41.3.55 | 168.39.183.141 |
| Dallas Dept. of Env. & Health Services | 1842 | 10.42.3.55 | 169.39.183.142 |
| Denton County Health Dept. | 1843 | 10.43.3.55 | 169.39.183.143 |
| Ector County Health Dept. | 1844 | 10.44.3.55 | 168.39.183.144 |
| El Paso City- County Health & Env. District | 1845 | 10.45.3.55 | 168.39.183.145 |
| Fort Bend County Health & Human Services | 9003 | 10.88.3.55 | 168.39.183.188 |
| Fort Worth City of | 1846 | 10.46.3.55 | 168.39.183.146 |
| Frisco City of | 9004 | 10.04.3.55 | 168.39.183.104 |
| Gainesville City of | 9005 | 10.05.3.55 | 168.39.183.105 |
| Galveston County Health District | 1847 | 10.47.3.55 | 168.39.183.147 |
| Garland Health Dept. City of | 1848 | 10.48.3.55 | 168.39-183.148 |
| Grayson County Health Dept. | 1849 | 10.49.3.55 | 168.39.183.149 |
| Greenville- Hunt County Health Dept. | 1850 | 10.50.3.55 | 168.39.183.150 |
| Gregg County Health Dept. | 1851 | 10.51.3.55 | 168.39.183.151 |
| Hardin County Health Dept. | 9011 | 10.11.3.55 | 168.39.183.111 |
| Harris County Public Health & Env. Serv. Dept. | 1852 | 10.52.3.55 | 168.39.183.152 |
| Hays County Health Dept. | 1853 | 10.53.3.55 | 168.39.183.153 |
| Hidalgo County Health Dept. | 1854 | 10.54.3.55 | 168.39.183.154 |
| Houston Dept. of Health & Human Services | 1855 | 10.55.3.55 | 168.39.183.155 |
| Irving Public Health & Env. Services Dept. City of | 1856 | 10.56.3.55 | 168.39.183.156 |
| Jackson County Health Dept. | 1857 | 10.57.3.55 | 168.39.183.157 |
| Jasper-Newton County Public Health District | 1858 | 10.58.3.55 | 168.39.183.158 |
| Jefferson County Health & Welfare Dept. | 9006 | 10.06.3.55 | 168.39.183.106 |
| Laredo Health Dept. City of | 1859 | 10.59.3.55 | 168.39.183.159 |
| Live Oak County of | 1860 | 10.60.3.55 | 168.39.183.160 |
| Lubbock City Health Dept. | 1861 | 10.61.3.55 | 168.39.183.161 |
| Marshall-Harrison County Health District | 1862 | 10.62.3.55 | 168.39-183.162 |
| Midland Health & Senior Services Dept. | 1863 | 10.63.3.55 | 168.39.183.163 |
| Milam County Health Dept. | 1864 | 10.64.3.55 | 168.39.183.164 |
| Montgomery County Health Dept. | 1865 | 10.65.3.55 | 168.39.183.165 |
| Orange County Health Dept. | 1866 | 10.66.3.55 | 168.39-183.166 |
| Paris-Lamar County Health Dept. | 1867 | 10.67.3.55 | 168.39.183.167 |
| Plainview-Hale County Health Dept. | 1868 | 10.68.3.55 | 168.39-183.168 |
| Plano City of | 9009 | 10.09.3.55 | 169.39.183.109 |
| Port Arthur City of | 1869 | 10.69.3.55 | 168.39.183.169 |
| Richardson Health Dept. City of | 9010 | 10.10.3.55 | 168.39.183.110 |
| San Angelo-Tom Green County Health Dept. | 1870 | 10.70.3.55 | 168.39.183.170 |
| San Antonio Metropolitan Health District | 1871 | 10.71.3.55 | 168.39.183.171 |
| San Antonio Health District - PHEP | 1891 | 10.91.3.55 | 168.39.183.191 |
| San Patricio County Health Dept. | 1872 | 10.72.3.55 | 168.39.183.172 |
| Scurry County Health Dept. | 1884 | 10.84.3.55 | 168.39.183.184 |
| Smith County Public Health District | 1873 | 10.73.3.55 | 168.39.183.173 |
| South Plains Public Health District | 1874 | 10.74.3.55 | 168.39.183.174 |
| Sweetwater- Nolan County Health Dept. | 1875 | 10.75.3.55 | 168.39.183.175 |
| TALHO Cedar Park | 1800 | 192.168.3.55 | 168.39.183.100 |
| Tarrant County Public Health Dept. | 1876 | 10.76.3.55 | 168.39.183.176 |
| Texarkana-Bowie County Family Health Center | 1877 | 10.77.3.55 | 168.39.183.177 |
| Uvalde County of | 1878 | 10.78.3.55 | 168.39.183.178 |
| Victoria City- County Health Dept. | 1879 | 10.79.3.55 | 168.39.183.179 |
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| Wichita Falls County Public Health District | 1880 | 10.80.3.55 | 168.39.183.180 |
| Willacy County Local Health Unit | 1881 | 10.81.3.55 | 168.39.183.181 |
| Williamson County & Cities Health District | 1882 | 10.82.3.55 | 168.39.183.182 |
| Wood County of | 1883 | 10.83.3.55 | 168.39.183.183 |