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 |
|---|---|---|---|---|---|---|---|
| 2015-12-14 | 909-745-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | RIALTO | CA |
| 2015-12-14 | 909-745-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | RIALTO | CA |
| 2015-12-14 | 909-745-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | RIALTO | CA |
| 2015-12-09 | 909-497-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHINO | CA |
| 2015-12-03 | 909-377-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | UPLAND | CA |
| 2015-12-03 | 909-377-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | UPLAND | CA |
| 2015-12-03 | 909-497-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHINO | CA |
| 2015-12-03 | 909-497-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHINO | CA |
| 2015-12-03 | 909-655-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DIAMONDBAR | CA |
| 2015-12-01 | 909-745-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RIALTO | CA |
| 2015-12-01 | 909-745-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RIALTO | CA |
| 2015-12-01 | 909-745-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RIALTO | CA |
| 2015-11-30 | 909-681-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FONTANA | CA |
| 2015-11-30 | 909-681-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FONTANA | CA |
| 2015-11-30 | 909-681-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FONTANA | CA |
| 2015-11-30 | 909-695-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FONTANA | CA |
| 2015-11-30 | 909-695-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FONTANA | CA |
| 2015-11-25 | 909-741-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLAREMONT | CA |
| 2015-11-19 | 909-675-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CLAREMONT | CA |
| 2015-11-19 | 909-675-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CLAREMONT | CA |
| 2015-11-03 | 909-737-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HIGHLAND | CA |
| 2015-10-28 | 909-727-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | UPLAND | CA |
| 2015-10-22 | 909-501-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | S BERNDINO | CA |
| 2015-10-22 | 909-655-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | DIAMONDBAR | CA |
| 2015-10-21 | 909-696-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CHINO | CA |
| 2015-10-20 | 909-501-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | S BERNDINO | CA |
| 2015-10-20 | 909-501-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | S BERNDINO | CA |
| 2015-10-20 | 909-501-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | S BERNDINO | CA |
| 2015-10-20 | 909-501-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | S BERNDINO | CA |
| 2015-10-16 | 909-727-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | UPLAND | CA |
| 2015-10-09 | 909-727-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | UPLAND | CA |
| 2015-10-06 | 909-316-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CALIMESA | CA |
| 2015-10-01 | 909-655-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DIAMONDBAR | CA |
| 2015-09-29 | 909-695-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | FONTANA | CA |
| 2015-09-29 | 909-695-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FONTANA | CA |
| 2015-09-29 | 909-695-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FONTANA | CA |
| 2015-09-29 | 909-696-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHINO | CA |
| 2015-09-29 | 909-727-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | UPLAND | CA |
| 2015-09-29 | 909-735-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | REDLANDS | CA |
| 2015-09-29 | 909-745-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RIALTO | CA |
| 2015-09-22 | 909-317-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ETIWANDA | CA |
| 2015-09-17 | 909-727-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | UPLAND | CA |
| 2015-09-16 | 909-655-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | DIAMONDBAR | CA |
| 2015-09-16 | 909-727-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | UPLAND | CA |
| 2015-09-16 | 909-727-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | UPLAND | CA |
| 2015-09-16 | 909-734-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ARROWHEAD | CA |
| 2015-09-16 | 909-745-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | RIALTO | CA |
| 2015-09-16 | 909-745-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | RIALTO | CA |
| 2015-09-15 | 909-314-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | S BERNDINO | CA |
| 2015-09-15 | 909-314-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | S BERNDINO | 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.