| Word | Digits in Telephone Number |
|---|---|
| Oligarchies | 654 427-2443 (7) |
| Oligarchist | 654 427-2447 (8) |
| Oligochaeta | 654 462-4238 (2) |
| Oligochaete | 654 462-4238 (3) |
| Oligoclases | 654 462-5273 (7) |
| Oligodontia | 654 463-6684 (2) |
| Oligomerous | 654 466-3768 (7) |
| Oligoplites | 654 467-5483 (7) |
| Oligopolies | 654 467-6543 (7) |