NumberResearchRecent prefix assignments
352 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
Most active assignees, last 30 days
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 787-231 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-232 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-233 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-234 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-235 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-236 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-237 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-238 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-239 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-240 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-241 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-242 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-243 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-244 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-245 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-246 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-247 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-248 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-249 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-250 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-251 | PUERTO RICO TEL. CO. | 3201 | BAYAMONNOR | PR | |
| 787-252 | PUERTO RICO TEL. CO. | 3201 | AGUADA | PR | |
| 787-253 | PUERTO RICO TEL. CO. | 3201 | ISLA VERDE | PR | |
| 787-254 | PUERTO RICO TEL. CO. | 3201 | CABO ROJO | PR | |
| 787-255 | PUERTO RICO TEL. CO. | 3201 | CABO ROJO | PR | |
| 787-256 | PUERTO RICO TEL. CO. | 3201 | CANOVANAS | PR | |
| 787-257 | PUERTO RICO TEL. CO. | 3201 | CAROLINA | PR | |
| 787-258 | PUERTO RICO TEL. CO. | 3201 | CAGUAS | PR | |
| 787-259 | PUERTO RICO TEL. CO. | 3201 | PONCE | PR | |
| 787-260 | PUERTO RICO TEL. CO. | 3201 | JUANA DIAZ | PR | |
| 787-261 | PUERTO RICO TEL. CO. | 3201 | LEVITTOWN | PR | |
| 787-262 | PUERTO RICO TEL. CO. | 3201 | CAMUY | PR | |
| 787-263 | PUERTO RICO TEL. CO. | 3201 | CAYEY | PR | |
| 787-264 | PUERTO RICO TEL. CO. | 3201 | SAN GERMAN | PR | |
| 787-265 | PUERTO RICO TEL. CO. | 3201 | MAYAGUEZ | PR | |
| 787-266 | PUERTO RICO TEL. CO. | 3201 | YABUCOA | PR | |
| 787-267 | PUERTO RICO TEL. CO. | 3201 | YAUCO | PR | |
| 787-268 | PUERTO RICO TEL. CO. | 3201 | SANTURCEES | PR | |
| 787-269 | PUERTO RICO TEL. CO. | 3201 | BAYAMONNOR | PR | |
| 787-270 | PUERTO RICO TEL. CO. | 3201 | VEGA ALTA | PR | |
| 787-271 | PUERTO RICO TEL. CO. | 3201 | ARROYO | PR | |
| 787-272 | PUERTO RICO TEL. CO. | 3201 | GUAYNABO | PR | |
| 787-273 | PUERTO RICO TEL. CO. | 3201 | PUEBLOVIEJ | PR | |
| 787-274 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-275 | PUERTO RICO TEL. CO. | 3201 | CATANO | PR | |
| 787-276 | PUERTO RICO TEL. CO. | 3201 | CAROLINA | PR | |
| 787-277 | PUERTO RICO TEL. CO. | 3201 | PUEBLOVIEJ | PR | |
| 787-278 | PUERTO RICO TEL. CO. | 3201 | DORADO | PR | |
| 787-279 | PUERTO RICO TEL. CO. | 3201 | BAYAMONSUR | PR | |
| 787-280 | PUERTO RICO TEL. CO. | 3201 | SANSBSTIAN | PR |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.