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 |
|---|---|---|---|---|---|
| 210-206 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-207 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-208 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-211 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 210-212 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-213 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-215 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-216 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-217 | AMERICAN MESSAGING SERVICES, LLC | 9748 | SANANTONIO | TX | |
| 210-218 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-219 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-220 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-222 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-223 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-224 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-225 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-226 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-227 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-228 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-229 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-230 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-231 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-233 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-235 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-240 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-241 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-242 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-244 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-246 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-247 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANANTONIO | TX | |
| 210-248 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANANTONIO | TX | |
| 210-249 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 8434 | SANANTONIO | TX | |
| 210-250 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-252 | TX | ||||
| 210-253 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANANTONIO | TX | |
| 210-254 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANANTONIO | TX | |
| 210-255 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-256 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-257 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-258 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-259 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-260 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-261 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-263 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-264 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-265 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-267 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-268 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 8434 | SANANTONIO | TX | |
| 210-269 | METROPCS, INC. | 5562 | SANANTONIO | TX | |
| 210-270 | 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.