NumberResearchRecent thousands-block assignments
2 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 909
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 |
|---|---|---|---|---|---|---|---|
| 2015-04-29 | 909-571-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | S BERNDINO | CA |
| 2015-04-28 | 909-492-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MENTONE | CA |
| 2015-04-24 | 909-566-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | RIALTO | CA |
| 2015-04-24 | 909-566-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | RIALTO | CA |
| 2015-04-24 | 909-566-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | RIALTO | CA |
| 2015-04-24 | 909-566-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | RIALTO | CA |
| 2015-04-24 | 909-695-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FONTANA | CA |
| 2015-04-24 | 909-736-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | UPLAND | CA |
| 2015-04-24 | 909-736-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | UPLAND | CA |
| 2015-04-24 | 909-736-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | UPLAND | CA |
| 2015-04-23 | 909-675-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CLAREMONT | CA |
| 2015-04-23 | 909-687-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ONTARIO | CA |
| 2015-04-21 | 909-313-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHINO | CA |
| 2015-04-21 | 909-313-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHINO | CA |
| 2015-04-21 | 909-313-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHINO | CA |
| 2015-04-21 | 909-313-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHINO | CA |
| 2015-04-21 | 909-552-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | UPLAND | CA |
| 2015-04-21 | 909-687-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | ONTARIO | CA |
| 2015-04-20 | 909-487-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CRESTLINE | CA |
| 2015-04-20 | 909-551-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | DIAMONDBAR | CA |
| 2015-04-20 | 909-551-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | DIAMONDBAR | CA |
| 2015-04-20 | 909-672-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | HIGHLAND | CA |
| 2015-04-15 | 909-734-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2015-04-15 | 909-734-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2015-04-15 | 909-734-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2015-04-13 | 909-372-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CALIMESA | CA |
| 2015-04-09 | 909-313-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHINO | CA |
| 2015-04-09 | 909-313-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHINO | CA |
| 2015-04-09 | 909-492-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MENTONE | CA |
| 2015-04-09 | 909-492-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MENTONE | CA |
| 2015-04-09 | 909-682-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2015-04-09 | 909-682-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2015-04-09 | 909-682-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2015-04-09 | 909-682-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2015-04-01 | 909-675-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CLAREMONT | CA |
| 2015-04-01 | 909-675-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CLAREMONT | CA |
| 2015-04-01 | 909-678-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ONTARIO | CA |
| 2015-04-01 | 909-678-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ONTARIO | CA |
| 2015-04-01 | 909-683-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MARSHALL | CA |
| 2015-04-01 | 909-683-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MARSHALL | CA |
| 2015-04-01 | 909-687-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ONTARIO | CA |
| 2015-04-01 | 909-687-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ONTARIO | CA |
| 2015-03-30 | 909-324-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RUNNINGSPG | CA |
| 2015-03-27 | 909-676-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | RIALTO | CA |
| 2015-03-27 | 909-676-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | RIALTO | CA |
| 2015-03-27 | 909-676-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | RIALTO | CA |
| 2015-03-27 | 909-676-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | RIALTO | CA |
| 2015-03-27 | 909-676-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | RIALTO | CA |
| 2015-03-27 | 909-699-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | COLTON | CA |
| 2015-03-27 | 909-699-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | COLTON | 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.