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 |
|---|---|---|---|---|---|
| 210-559 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-561 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-562 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-564 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-565 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-566 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-567 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-568 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANANTONIO | TX | |
| 210-572 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 8434 | SANANTONIO | TX | |
| 210-573 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-575 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-576 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SANANTONIO | TX | |
| 210-579 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANANTONIO | TX | |
| 210-581 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 8434 | SANANTONIO | TX | |
| 210-582 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 8434 | SANANTONIO | TX | |
| 210-586 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-587 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANANTONIO | TX | |
| 210-588 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-590 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-592 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-593 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-595 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-599 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-601 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-602 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-603 | SPOK, INC. | 6630 | SANANTONIO | TX | |
| 210-604 | SPOK, INC. | 6630 | SANANTONIO | TX | |
| 210-606 | ONVOY, LLC - TX | 903C | SANANTONIO | TX | |
| 210-611 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 210-613 | SPOK, INC. | 6630 | SANANTONIO | TX | |
| 210-614 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-615 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-616 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-617 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-618 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-619 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-621 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-622 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-623 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-624 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-625 | AT&T - LOCAL | 7421 | SANANTONIO | TX | |
| 210-626 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-627 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-628 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-632 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SANANTONIO | TX | |
| 210-633 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-634 | TWC IP ENABLED SERVICES, LLC | 793K | SANANTONIO | TX | |
| 210-635 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-637 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-639 | T-MOBILE USA, INC. | 6529 | 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.