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
New assignments by month
Sep 2026
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 956-221 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | MCALLEN | TX | |
| 956-225 | STPCS JOINT VENTURE, LLC | 4290 | MCALLEN | TX | |
| 956-226 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-231 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | LAREDO | TX | |
| 956-233 | SOUTHWESTERN BELL | 9533 | LOSFRESNOS | TX | |
| 956-236 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | LAREDO | TX | |
| 956-237 | STPCS JOINT VENTURE, LLC | 4290 | LAREDO | TX | |
| 956-244 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HARLINGEN | TX | |
| 956-245 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HARLINGEN | TX | |
| 956-248 | VALLEY TEL. COOP., INC. | 2159 | SANPERLITA | TX | |
| 956-251 | STPCS JOINT VENTURE, LLC | 4290 | LAREDO | TX | |
| 956-253 | ONVOY, LLC - TX | 903C | ZAPATA | TX | |
| 956-255 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | EDCOUCH | TX | |
| 956-262 | SOUTHWESTERN BELL | 9533 | EDCOUCH | TX | |
| 956-268 | SPOK, INC. | 6630 | MCALLEN | TX | |
| 956-278 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MCALLEN | TX | |
| 956-279 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | EDINBURG | TX | |
| 956-281 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HARLINGEN | TX | |
| 956-283 | SOUTHWESTERN BELL | 9533 | PHARR | TX | |
| 956-284 | STPCS JOINT VENTURE, LLC | 4290 | LAREDO | TX | |
| 956-285 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LAREDO | TX | |
| 956-286 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LAREDO | TX | |
| 956-287 | SOUTHWESTERN BELL | 9533 | EDINBURG | TX | |
| 956-289 | SOUTHWESTERN BELL | 9533 | EDINBURG | TX | |
| 956-291 | SOUTHWESTERN BELL | 9533 | HARLINGEN | TX | |
| 956-292 | SOUTHWESTERN BELL | 9533 | EDINBURG | TX | |
| 956-300 | ONVOY, LLC - TX | 903C | HARLINGEN | TX | |
| 956-302 | ONVOY, LLC - TX | 903C | ZAPATA | TX | |
| 956-303 | ONVOY, LLC - TX | 903C | LOSFRESNOS | TX | |
| 956-304 | ONVOY, LLC - TX | 903C | RAYMONDVL | TX | |
| 956-305 | ONVOY, LLC - TX | 903C | EDINBURG | TX | |
| 956-306 | ONVOY, LLC - TX | 903C | EDCOUCH | TX | |
| 956-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 956-312 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BROWNSVL | TX | |
| 956-316 | SOUTHWESTERN BELL | 9533 | EDINBURG | TX | |
| 956-318 | SOUTHWESTERN BELL | 9533 | EDINBURG | TX | |
| 956-319 | AT&T - LOCAL | 7421 | LAREDO | TX | |
| 956-324 | STPCS JOINT VENTURE, LLC | 4290 | LAREDO | TX | |
| 956-326 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-330 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | EDINBURG | TX | |
| 956-334 | STPCS JOINT VENTURE, LLC | 4290 | LAREDO | TX | |
| 956-335 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-337 | STPCS JOINT VENTURE, LLC | 4290 | LAREDO | TX | |
| 956-341 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-342 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | MCALLEN | TX | |
| 956-343 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-344 | SPOK, INC. | 6630 | LAREDO | TX | |
| 956-345 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-346 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | BROWNSVL | TX | |
| 956-347 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | LYFORD | TX |
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.