NumberResearchRecent prefix assignments
5 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026
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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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 602-931 | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ | |
| 608-207 | T-MOBILE USA, INC. | 6529 | BELOIT | WI | |
| 608-209 | T-MOBILE USA, INC. | 6529 | MADISON | WI | |
| 608-213 | T-MOBILE USA, INC. | 6529 | MADISON | WI | |
| 608-217 | T-MOBILE USA, INC. | 6529 | MADISON | WI | |
| 608-239 | T-MOBILE USA, INC. | 6529 | MADISON | WI | |
| 608-359 | T-MOBILE USA, INC. | 6529 | JANESVILLE | WI | |
| 608-385 | T-MOBILE USA, INC. | 6529 | LA CROSSE | WI | |
| 608-707 | T-MOBILE USA, INC. | 6529 | MADISON | WI | |
| 618-203 | T-MOBILE USA, INC. | 6529 | CARBONDALE | IL | |
| 618-204 | T-MOBILE USA, INC. | 6529 | MT VERNON | IL | |
| 618-316 | T-MOBILE USA, INC. | 6529 | MT VERNON | IL | |
| 618-477 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-514 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-530 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-531 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-558 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-567 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-580 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-581 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-593 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-670 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-671 | T-MOBILE USA, INC. | 6529 | BELLEVILLE | IL | |
| 618-696 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-779 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-781 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-789 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 618-960 | T-MOBILE USA, INC. | 6529 | COLLINSVL | IL | |
| 619-214 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA | |
| 619-218 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA | |
| 619-227 | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA | |
| 619-247 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA | |
| 619-248 | T-MOBILE USA, INC. | 6529 | LA MESA | CA | |
| 619-249 | T-MOBILE USA, INC. | 6529 | EL CAJON | CA | |
| 619-251 | T-MOBILE USA, INC. | 6529 | LA MESA | CA | |
| 619-253 | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA | |
| 619-319 | T-MOBILE USA, INC. | 6529 | CORONADO | CA | |
| 619-352 | T-MOBILE USA, INC. | 6529 | NATIONALCY | CA | |
| 619-368 | T-MOBILE USA, INC. | 6529 | EL CAJON | CA | |
| 619-376 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA | |
| 619-379 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA | |
| 619-384 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA | |
| 619-392 | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA | |
| 619-436 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA | |
| 619-520 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA | |
| 619-571 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA | |
| 619-572 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA | |
| 619-602 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA | |
| 619-665 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA | |
| 619-666 | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.