| Word | Digits in Telephone Number |
|---|---|
| On-Scene | 667-2363 |
| Onagers | 662-4377 |
| Onanism | 662-6476 |
| Onanist | 662-6478 |
| Onboard | 662-6273 |
| Oncovin | 662-6846 |
| Ondatra | 663-2872 |
| Onefold | 663-3653 |
| Oneidas | 663-4327 |
| Oneiric | 663-4742 |
| Onement | 663-6368 |
| Oneness | 663-6377 |
| Onerary | 663-7279 |
| Onerate | 663-7283 |
| Onerier | 663-7437 |
| Onerous | 663-7687 |
| Oneself | 663-7353 |
| Onetime | 663-8463 |
| Ongoing | 664-6464 |
| Oniscus | 664-7287 |
| Onoclea | 666-2532 |
| Onsager | 667-2437 |
| Onshore | 667-4673 |
| Onstage | 667-8243 |
| Ontario | 668-2746 |
| Onwards | 669-2737 |
| Onymous | 669-6687 |