| Business | Phone |
| American Investigation Svc 17193 Seville Ave, Fontana 92335 | (951) 640-7185 |
| Files & Investigations Unltd Fontana 92335 | (909) 350-9591 |
| Fisher Group Intl 16550 Arrow Blvd # 16, Fontana 92335 | (909) 428-7562 |
| Pacific East Investigative Svc 9260 Blanchard Ave, Fontana 92335 | (909) 829-8386 |
| Trinity Investigations 15861 Highland Ave, Fontana 92336 | (909) 357-8494 |