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
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 210-342 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-343 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-344 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-345 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-346 | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX | |
| 210-347 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SANANTONIO | TX | |
| 210-348 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-349 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-351 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-352 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-353 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-354 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-355 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-357 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-358 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-359 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-360 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-362 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-363 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-364 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-365 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-366 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-367 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-368 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-369 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-370 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-373 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-375 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-377 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-378 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-379 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-380 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SANANTONIO | TX | |
| 210-381 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SANANTONIO | TX | |
| 210-382 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SANANTONIO | TX | |
| 210-383 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SANANTONIO | TX | |
| 210-384 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-385 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-386 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-387 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-389 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-391 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-392 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-393 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-394 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-395 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 8434 | SANANTONIO | TX | |
| 210-396 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-397 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-402 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-403 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-404 | SOUTHWESTERN BELL | 9533 | SANANTONIO | 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.