NumberResearchRecent thousands-block assignments
13 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 840
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 |
|---|---|---|---|---|---|---|---|
| 2025-07-10 | 840-275-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | POMONA | CA |
| 2025-07-10 | 840-275-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | POMONA | CA |
| 2025-06-18 | 840-274-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-06-18 | 840-274-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-06-18 | 840-274-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-06-18 | 840-274-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-06-18 | 840-278-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-06-18 | 840-278-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-06-18 | 840-278-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-06-09 | 840-271-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FONTANA | CA |
| 2025-06-09 | 840-271-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FONTANA | CA |
| 2025-06-09 | 840-271-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FONTANA | CA |
| 2025-05-16 | 840-274-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-05-16 | 840-274-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-05-16 | 840-274-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-05-16 | 840-274-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-05-16 | 840-274-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-05-09 | 840-257-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | COLTON | CA |
| 2025-04-29 | 840-277-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLAREMONT | CA |
| 2025-04-29 | 840-277-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLAREMONT | CA |
| 2025-04-25 | 840-272-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHINO | CA |
| 2025-04-22 | 840-276-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | UPLAND | CA |
| 2025-04-22 | 840-276-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | UPLAND | CA |
| 2025-04-22 | 840-276-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | UPLAND | CA |
| 2025-04-22 | 840-277-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CLAREMONT | CA |
| 2025-04-22 | 840-277-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CLAREMONT | CA |
| 2025-04-22 | 840-277-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CLAREMONT | CA |
| 2025-04-11 | 840-258-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HIGHLAND | CA |
| 2025-03-27 | 840-276-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | UPLAND | CA |
| 2025-03-27 | 840-276-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | UPLAND | CA |
| 2025-03-27 | 840-276-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | UPLAND | CA |
| 2025-03-18 | 840-275-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | POMONA | CA |
| 2025-03-18 | 840-275-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | POMONA | CA |
| 2025-03-13 | 840-274-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | ARROWHEAD | CA |
| 2025-03-06 | 840-265-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-03-06 | 840-265-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2025-03-06 | 840-272-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CHINO | CA |
| 2025-03-06 | 840-272-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CHINO | CA |
| 2025-03-06 | 840-272-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CHINO | CA |
| 2025-02-21 | 840-256-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | UPLAND | CA |
| 2025-02-20 | 840-266-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | S BERNDINO | CA |
| 2025-02-20 | 840-266-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | S BERNDINO | CA |
| 2025-02-20 | 840-266-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | S BERNDINO | CA |
| 2025-02-20 | 840-266-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | S BERNDINO | CA |
| 2025-02-20 | 840-266-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | S BERNDINO | CA |
| 2025-02-18 | 840-261-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FONTANA | CA |
| 2025-02-18 | 840-261-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FONTANA | CA |
| 2025-02-18 | 840-261-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FONTANA | CA |
| 2025-02-18 | 840-261-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FONTANA | CA |
| 2025-02-18 | 840-261-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FONTANA | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.