| Business | Phone |
| Ed Gerusa Investigations 2390 Central Blvd B, Brownsville 78520 | (956) 548-9004 |
| International Investigations 335 Palm Blvd, Brownsville 78520 | (956) 548-1122 |
| International Profiles & Sec 2100 Boca Chica Blvd 204, Brownsville 78521 | (956) 546-0761 |
| Investigative Research Inc 1200 Central Blvd H4, Brownsville 78520 | (956) 504-3335 |
| R Investigations 1119 Squaw Valley Dr, Brownsville 78520 | (956) 350-9417 |
| Reyna Investigative Svc 868 W Price Rd, Brownsville 78520 | (956) 544-1202 |
| T & T's Security & Invstgtns 4684 Palacio Real Dr, Brownsville 78521 | (956) 541-9343 |