| Business | Phone |
| Executive Information Grp 124 Mount Auburn St, Cambridge 2138 | (617) 576-5747 |
| Millenium Information & Techn 124 Mount Auburn St, Cambridge 2138 | (617) 520-6640 |
| Mit Information Ctr 32 Vassar St, Cambridge 2139 | (617) 577-0343 |
| Smart Route Systems 141 Portland St # 8100, Cambridge 2139 | (617) 494-8100 |