| Word | Digits in Telephone Number |
|---|---|
| Isoantibody | 476 268-4263 (9) |
| Isoantigens | 476 268-4436 (7) |
| Isobutylene | 476 288-9536 (3) |
| Isochronism | 476 247-6647 (6) |
| Isochronize | 476 247-6649 (3) |
| Isochronous | 476 247-6668 (7) |
| Isocyanates | 476 292-6283 (7) |
| Isoelectric | 476 353-2874 (2) |
| Isografting | 476 472-3846 (4) |
| Isoleucines | 476 538-2463 (7) |
| Isolophobia | 476 567-4624 (2) |
| Isomerizing | 476 637-4946 (4) |
| Isometrical | 476 638-7422 (5) |
| Isometropia | 476 638-7674 (2) |
| Isomorphism | 476 667-7447 (6) |
| Isomorphous | 476 667-7468 (7) |
| Isopropanol | 476 776-7266 (5) |
| Isospondyli | 476 776-6395 (4) |
| Isotonicity | 476 866-4248 (9) |