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 |
|---|---|---|---|---|---|---|---|
| 2007-04-17 | 909-275-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FONTANA | CA |
| 2007-04-17 | 909-342-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CHINO | CA |
| 2007-04-13 | 909-203-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CHINO | CA |
| 2007-04-13 | 909-204-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | UPLAND | CA |
| 2007-04-13 | 909-532-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | UPLAND | CA |
| 2007-04-13 | 909-532-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | UPLAND | CA |
| 2007-04-13 | 909-532-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | UPLAND | CA |
| 2007-04-13 | 909-689-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ETIWANDA | CA |
| 2007-04-13 | 909-689-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ETIWANDA | CA |
| 2007-04-11 | 909-204-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | UPLAND | CA |
| 2007-04-11 | 909-204-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | UPLAND | CA |
| 2007-04-11 | 909-204-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | UPLAND | CA |
| 2007-04-10 | 909-486-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | S BERNDINO | CA |
| 2007-04-10 | 909-567-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | S BERNDINO | CA |
| 2007-04-10 | 909-567-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | S BERNDINO | CA |
| 2007-03-27 | 909-243-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | UPLAND | CA |
| 2007-03-22 | 909-233-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIALTO | CA |
| 2007-03-22 | 909-233-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIALTO | CA |
| 2007-03-22 | 909-233-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIALTO | CA |
| 2007-03-22 | 909-236-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | POMONA | CA |
| 2007-03-22 | 909-236-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | POMONA | CA |
| 2007-03-22 | 909-236-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | POMONA | CA |
| 2007-03-22 | 909-236-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | POMONA | CA |
| 2007-03-22 | 909-236-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | POMONA | CA |
| 2007-03-22 | 909-342-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CHINO | CA |
| 2007-03-22 | 909-962-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CLAREMONT | CA |
| 2007-03-21 | 909-232-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | FONTANA | CA |
| 2007-03-21 | 909-232-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | FONTANA | CA |
| 2007-03-21 | 909-232-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | FONTANA | CA |
| 2007-03-21 | 909-235-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | ONTARIO | CA |
| 2007-03-21 | 909-235-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | ONTARIO | CA |
| 2007-03-21 | 909-235-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | ONTARIO | CA |
| 2007-03-21 | 909-235-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | ONTARIO | CA |
| 2007-03-21 | 909-643-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | POMONA | CA |
| 2007-03-14 | 909-733-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | S BERNDINO | CA |
| 2007-03-11 | 909-231-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | FONTANA | CA |
| 2007-03-11 | 909-231-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | FONTANA | CA |
| 2007-03-11 | 909-231-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FONTANA | CA |
| 2007-03-09 | 909-218-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ONTARIO | CA |
| 2007-03-09 | 909-222-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | COLTON | CA |
| 2007-03-08 | 909-548-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CHINO | CA |
| 2007-03-08 | 909-685-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | RIALTO | CA |
| 2007-03-07 | 909-685-2XXX | 2000–2999 | Assigned | PACIFIC BELL | 9740 | RIALTO | CA |
| 2007-03-06 | 909-206-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MENTONE | CA |
| 2007-03-06 | 909-436-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARROWHEAD | CA |
| 2007-03-06 | 909-575-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CLAREMONT | CA |
| 2007-03-06 | 909-918-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CALIMESA | CA |
| 2007-03-05 | 909-212-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ONTARIO | CA |
| 2007-03-05 | 909-212-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ONTARIO | CA |
| 2007-03-05 | 909-212-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ONTARIO | 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.