NumberResearchRecent prefix assignments
380 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 |
|---|---|---|---|---|---|
| 787-954 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | AIBONITO | PR | |
| 787-957 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | CANOVANAS | PR | |
| 787-958 | PR | ||||
| 787-959 | BAYAMONNOR | PR | |||
| 787-960 | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR | |
| 787-962 | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR | |
| 787-963 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-964 | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR | |
| 787-967 | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR | |
| 787-968 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | VIEQUES | PR | |
| 787-969 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-970 | PUERTO RICO TEL. CO. | 3201 | BARCELONTA | PR | |
| 787-971 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | SAN ISABEL | PR | |
| 787-972 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-975 | LIBERTY MOBILE PUERTO RICO INC. | 639J | LEVITTOWN | PR | |
| 787-976 | PR | ||||
| 787-977 | PUERTO RICO TEL. CO. | 3201 | SANTURCE | PR | |
| 787-978 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | SABANAGRND | PR | |
| 787-979 | LIBERTY MOBILE PUERTO RICO INC. | 639J | LEVITTOWN | PR | |
| 787-981 | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR | |
| 787-982 | PUERTO RICO TEL. CO. | 3201 | SANTURCEES | PR | |
| 787-983 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-984 | PUERTO RICO TEL. CO. | 3201 | PONCE | PR | |
| 787-986 | PUERTO RICO TEL. CO. | 3201 | MAYAGUEZ | PR | |
| 787-988 | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR | |
| 787-991 | PUERTO RICO TEL. CO. | 3201 | AIBONITO | PR | |
| 787-992 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | YAUCO | PR | |
| 787-994 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-995 | PUERTO RICO TEL. CO. | 3201 | BAYAMONNOR | PR | |
| 787-996 | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR | |
| 787-997 | PUERTO RICO TEL. CO. | 3201 | RAMEY | PR | |
| 787-999 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | RIOPIEDRAS | PR | |
| 801-201 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SALT LAKE | UT | |
| 801-203 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOUNTIFUL | UT | |
| 801-204 | QWEST CORPORATION | 9636 | SALT LAKE | UT | |
| 801-205 | METROPCS, INC. | 5562 | SALT LAKE | UT | |
| 801-206 | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | ALTA | UT | |
| 801-207 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MURRAY | UT | |
| 801-208 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MIDVALE | UT | |
| 801-209 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SALT LAKE | UT | |
| 801-211 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | UT | |
| 801-212 | QWEST CORPORATION | 9636 | SALT LAKE | UT | |
| 801-213 | QWEST CORPORATION | 9636 | SALT LAKE | UT | |
| 801-215 | QWEST CORPORATION | 9636 | SALT LAKE | UT | |
| 801-216 | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | AMERCNFORK | UT | |
| 801-217 | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | CLEARFIELD | UT | |
| 801-218 | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | FARMINGTON | UT | |
| 801-219 | SPOK, INC. | 6630 | SALT LAKE | UT | |
| 801-220 | QWEST CORPORATION | 9636 | SALT LAKE | UT | |
| 801-221 | QWEST CORPORATION | 9636 | PROVO | UT |
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.