| Business | Phone |
| Hwa Rang-Do Intl Headquarters 8200 Firestone Blvd, Downey 90241 | (562) 861-0111 |
| Master Gonsalves Ultimate 8832 Imperial Hwy, Downey 90242 | (562) 923-1373 |
| Hwa Rang Do World Headqrters 8200 Firestone Blvd, Downey 90241 | (949) 454-9000 |
| Karate-Kung Fu 8832 Imperial Hwy, Downey 90242 | (562) 923-4144 |
| U S Tae Kwon Do Karate Center 9915 Paramount Blvd, Downey 90240 | (562) 928-1177 |