NumberResearchRecent thousands-block assignments
15 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 341
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-06-03 | 341-252-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FRNK MAIN | CA |
| 2024-05-31 | 341-239-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | OKLD ALMD | CA |
| 2024-05-31 | 341-239-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | OKLD ALMD | CA |
| 2024-04-09 | 341-219-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | OKLD BKLY | CA |
| 2024-04-09 | 341-219-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | OKLD BKLY | CA |
| 2024-04-03 | 341-239-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | OKLD ALMD | CA |
| 2024-03-27 | 341-240-4XXX | 4000–4999 | Assigned | NUSO, LLC | 732J | HAYWARD | CA |
| 2024-03-27 | 341-245-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HAYWARD | CA |
| 2024-03-27 | 341-247-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RICHMOND | CA |
| 2024-03-27 | 341-247-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RICHMOND | CA |
| 2024-03-27 | 341-247-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RICHMOND | CA |
| 2024-03-27 | 341-251-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ELSBR-PINL | CA |
| 2024-03-25 | 341-249-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | FRNK GRNLF | CA |
| 2024-03-19 | 341-246-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | FRNK OLIVR | CA |
| 2024-03-18 | 341-250-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | OKLD FRTVL | CA |
| 2024-03-18 | 341-250-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | OKLD FRTVL | CA |
| 2024-03-12 | 341-229-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2024-03-05 | 341-244-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | OKLD TRNID | CA |
| 2024-03-05 | 341-247-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | RICHMOND | CA |
| 2024-02-20 | 341-249-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-20 | 341-249-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-20 | 341-249-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-20 | 341-249-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-20 | 341-249-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-20 | 341-249-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-20 | 341-249-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-16 | 341-210-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD ALMD | CA |
| 2024-02-16 | 341-248-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-16 | 341-248-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-16 | 341-248-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-16 | 341-248-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-16 | 341-248-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-16 | 341-248-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-16 | 341-248-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-16 | 341-248-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-02-12 | 341-229-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2024-02-12 | 341-229-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2024-02-12 | 341-229-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2024-02-07 | 341-227-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | FRNK OLIVR | CA |
| 2024-02-07 | 341-242-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | RICHMOND | CA |
| 2024-02-07 | 341-242-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | RICHMOND | CA |
| 2024-02-07 | 341-243-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | HRCUL-RODE | CA |
| 2024-02-07 | 341-246-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | FRNK OLIVR | CA |
| 2024-02-07 | 341-246-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | FRNK OLIVR | CA |
| 2024-02-07 | 341-246-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | FRNK OLIVR | CA |
| 2024-02-07 | 341-246-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | FRNK OLIVR | CA |
| 2024-02-07 | 341-247-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | RICHMOND | CA |
| 2024-02-07 | 341-247-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | RICHMOND | CA |
| 2024-02-07 | 341-248-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | FRNK GRNLF | CA |
| 2024-02-07 | 341-248-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | FRNK GRNLF | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.