Dominican Republic voice guidelines
Voice calling guidelines for Dominican Republic (DO), covering reachability, caller ID formats, DTMF support, and emergency services.
Locale overview
| Field | Details |
|---|---|
| Country | Dominican Republic |
| ISO code | DO |
| Region | North America (Caribbean) |
| Dialing code | +1-809, +1-829, +1-849 |
Reachability
All primary call types are supported for Dominican Republic numbers.
| Call type | Inbound | Outbound |
|---|---|---|
| Domestic | Supported | Supported |
| International | Supported | Supported |
| Toll-free | Supported | Supported |
Restriction: Domestic outbound calls originating from non-local numbers are handled on a best-effort basis and may not be guaranteed to complete successfully.
Caller ID
| Call type | Inbound caller ID | Outbound caller ID |
|---|---|---|
| Domestic | +E.164 format | Local format (non-guaranteed) |
| International | +E.164 format (non-guaranteed) | +E.164 format |
| Toll-free | +E.164 format | Local format (non-guaranteed) |
Outbound caller ID for domestic and toll-free calls is presented in local format but delivery is not guaranteed by the carrier network.
DTMF support
DTMF (dual-tone multi-frequency) signaling uses RFC 2833 encoding and is supported for both inbound and outbound calls in Dominican Republic.
Emergency services
Calls to emergency services numbers in Dominican Republic are not supported. Do not use voice calling for emergency purposes in this locale.
Compliance note
These guidelines summarize carrier requirements at the time of publication and do not constitute legal counsel. Verify that your implementation complies with all applicable telecommunications regulations in Dominican Republic.