00504 and +504 are used interchangeably to dial Honduran phone numbers from a mobile (more on the plus sign).
| Phone type | Dialing format | Or using + |
|---|---|---|
| Cell phone | 00 504 3xxx xxxx | +504 3xxx xxxx |
| Cell phone | 00 504 7xxx xxxx | +504 7xxx xxxx |
| Cell phone | 00 504 8xxx xxxx | +504 8xxx xxxx |
| Cell phone | 00 504 9xxx xxxx | +504 9xxx xxxx |
| Landline | 00 504 2xxx xxxx | +504 2xxx xxxx |