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 |
|---|---|---|---|---|---|---|---|
| 2025-01-13 | 341-262-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2025-01-13 | 341-262-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2025-01-13 | 341-262-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2025-01-13 | 341-262-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2025-01-13 | 341-262-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2025-01-13 | 341-262-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2025-01-13 | 341-262-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2025-01-13 | 341-262-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2025-01-13 | 341-262-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2025-01-13 | 341-262-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2025-01-02 | 341-257-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRNK MAIN | CA |
| 2025-01-02 | 341-261-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRNK GRNLF | CA |
| 2024-12-16 | 341-249-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-12-16 | 341-249-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-12-16 | 341-256-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OKLD FRTVL | CA |
| 2024-12-16 | 341-336-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK GRNLF | CA |
| 2024-12-10 | 341-260-2XXX | 2000–2999 | Assigned | SONIC TELECOM, LLC - CA | 433E | HAYWARD | CA |
| 2024-11-25 | 341-258-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2024-11-25 | 341-258-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2024-11-25 | 341-258-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2024-11-25 | 341-258-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2024-11-21 | 341-229-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OKLD MN-PD | CA |
| 2024-11-21 | 341-229-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OKLD MN-PD | CA |
| 2024-11-20 | 341-243-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HRCUL-RODE | CA |
| 2024-11-14 | 341-251-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ELSBR-PINL | CA |
| 2024-11-14 | 341-259-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ELSBR-PINL | CA |
| 2024-11-12 | 341-258-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2024-11-12 | 341-258-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2024-11-12 | 341-258-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2024-11-12 | 341-258-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2024-11-08 | 341-254-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | OKLD BKLY | CA |
| 2024-11-01 | 341-251-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ELSBR-PINL | CA |
| 2024-11-01 | 341-258-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2024-10-23 | 341-251-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ELSBR-PINL | CA |
| 2024-10-22 | 341-254-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | OKLD BKLY | CA |
| 2024-10-15 | 341-258-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2024-10-10 | 341-257-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | FRNK MAIN | CA |
| 2024-09-20 | 341-231-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ELSBR-PINL | CA |
| 2024-09-20 | 341-243-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HRCUL-RODE | CA |
| 2024-09-20 | 341-243-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HRCUL-RODE | CA |
| 2024-09-20 | 341-251-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ELSBR-PINL | CA |
| 2024-09-20 | 341-254-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | OKLD BKLY | CA |
| 2024-09-20 | 341-341-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRNK OLIVR | CA |
| 2024-09-20 | 341-341-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRNK OLIVR | CA |
| 2024-09-19 | 341-252-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK MAIN | CA |
| 2024-09-19 | 341-252-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK MAIN | CA |
| 2024-09-19 | 341-252-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK MAIN | CA |
| 2024-09-19 | 341-356-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRNK MAIN | CA |
| 2024-09-18 | 341-254-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD BKLY | CA |
| 2024-09-13 | 341-256-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | OKLD FRTVL | 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.