939
Area code
PR
United States geographic area code, in service since 2001-09-15. Part of the 787/939 overlay complex — ten-digit dialing required.
Statusin service
Introduced2001-09-15
JurisdictionPR, US
Local dialing10D
Time zoneAtlantic
Last verified2026-09-17
Utilization 47.2% of assignable prefixes assigned
As of 09/17/2026
0%374 of ~792 assignable NXX values (200–999 excl. N11)100%
Prefix-level assignment does not equal number-level exhaustion; thousands-block pooling extends capacity. First assignment on record 2001-07-19, most recent 2025-10-22.
Area codes serve rate-center geographies, not municipal boundaries. “PR” identifies the jurisdiction, not an exact city footprint.
Top assignees
Ranked by assigned prefixes · initial assignee ≠ current carrier| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | SUNCOM DBA T-MOBILE USA | 121 | 32.4% |
| 02 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 87 | 23.3% |
| 03 | LIBERTY MOBILE PUERTO RICO INC. | 62 | 16.6% |
| 04 | LIBERTY COMMUNICATIONS OF PUERTO RICO LLC | 27 | 7.2% |
| 05 | ONVOY SPECTRUM, LLC | 14 | 3.7% |
| 06 | NEUTRAL TANDEM - PR | 14 | 3.7% |
| 07 | NATURAL G.C. INC. - PR | 14 | 3.7% |
| 08 | MULTIPLE OCN LISTING | 9 | 2.4% |
| 09 | METROPCS, INC. | 8 | 2.1% |
| 10 | LUMEN TECHNOLOGIES PUERTO RICO, LLC | 5 | 1.3% |
Important: these are initial assignees from NANPA CO-code records — the carrier a prefix was originally assigned to. Because of number portability, the current serving carrier of any individual number may differ.
Change history
Recorded events for this NPA- 2000-07-26 NPA 939 To Overlay NPA 787 (Puerto Rico)
- 2001-09-15Area code 939 entered service (created from 787).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2001-08-06 | PL-293 ↗ | Supplemental Information NPA Overlay 787/939 (Puerto Rico) |
| 2001-01-26 | PL-259 ↗ | Delayed 10-Digit Dialing in NPA 787 (Puerto Rico) |
| 2000-07-26 | PL-236 ↗ | NPA 939 To Overlay NPA 787 (Puerto Rico) |