| Word | Digits in Telephone Number |
|---|---|
| On-Demand | 66336263 |
| Onanisms | 66264767 |
| Onanists | 66264787 |
| Oncidium | 66243486 |
| Oncogene | 66264363 |
| Oncology | 66265649 |
| Oncoming | 66266464 |
| Ondaatje | 66322853 |
| Ondogram | 66364726 |
| Oneirism | 66347476 |
| Oneriest | 66374378 |
| Onlooker | 66566537 |
| Onomancy | 66662629 |
| Onondaga | 66663242 |
| Onrushes | 66787437 |
| Onstream | 66787326 |
| Ontogeny | 66864369 |
| Ontology | 66865649 |
| Onychium | 66924486 |