| Word | Digits in Telephone Number |
|---|---|
| Unobjective | 866 253-2848 (3) |
| Unobligated | 866 254-4283 (3) |
| Unobservant | 866 273-7826 (8) |
| Unobtrusive | 866 287-8748 (3) |
| Unoffending | 866 333-6346 (4) |
| Unopposable | 866 776-7225 (3) |
| Unorganized | 866 742-6493 (3) |
| Unorthodoxy | 866 784-6369 (9) |