| Business | Phone |
| Intersearch Corp 410 Horsham Rd, Horsham 19044 | (215) 442-9997 |
| Tel-One 410 Horsham Rd, Horsham 19044 | (215) 442-9060 |
| Tns Intersearch Corp 410 Horsham Rd, Horsham 19044 | (215) 442-9000 |
| Strategic Business Research 300 Welsh Rd, Horsham 19044 | (215) 657-7444 |