NumberResearchRecent thousands-block assignments
1 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 323
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-01-03 | 323-747-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 03 | CA |
| 2006-12-18 | 323-348-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 12 | CA |
| 2006-12-15 | 323-539-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 04 | CA |
| 2006-12-14 | 323-354-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 05 | CA |
| 2006-12-14 | 323-392-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 06 | CA |
| 2006-12-14 | 323-392-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 06 | CA |
| 2006-12-14 | 323-392-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 06 | CA |
| 2006-12-14 | 323-392-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 06 | CA |
| 2006-12-14 | 323-392-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 06 | CA |
| 2006-12-14 | 323-392-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 06 | CA |
| 2006-12-14 | 323-392-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 06 | CA |
| 2006-12-14 | 323-392-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 06 | CA |
| 2006-12-14 | 323-641-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2006-12-14 | 323-784-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | LSAN DA 13 | CA |
| 2006-12-11 | 323-649-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2006-12-08 | 323-392-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 06 | CA |
| 2006-12-08 | 323-392-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 06 | CA |
| 2006-12-06 | 323-352-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 04 | CA |
| 2006-12-06 | 323-354-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 05 | CA |
| 2006-12-06 | 323-557-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 13 | CA |
| 2006-12-06 | 323-641-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 11 | CA |
| 2006-12-05 | 323-213-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MONTEBELLO | CA |
| 2006-12-05 | 323-238-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 08 | CA |
| 2006-12-05 | 323-284-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 02 | CA |
| 2006-12-05 | 323-348-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 12 | CA |
| 2006-12-05 | 323-378-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 14 | CA |
| 2006-12-05 | 323-378-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 14 | CA |
| 2006-12-05 | 323-424-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 13 | CA |
| 2006-12-05 | 323-424-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 13 | CA |
| 2006-12-05 | 323-537-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 06 | CA |
| 2006-12-01 | 323-354-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 05 | CA |
| 2006-12-01 | 323-419-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2006-12-01 | 323-419-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2006-11-28 | 323-303-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MONTEBELLO | CA |
| 2006-11-16 | 323-345-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LSAN DA 02 | CA |
| 2006-11-15 | 323-920-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 09 | CA |
| 2006-11-07 | 323-373-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2006-11-07 | 323-747-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2006-11-07 | 323-892-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2006-11-02 | 323-348-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 12 | CA |
| 2006-11-02 | 323-378-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2006-10-24 | 323-361-0XXX | 0000–0999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 02 | CA |
| 2006-10-24 | 323-361-1XXX | 1000–1999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 02 | CA |
| 2006-10-24 | 323-361-2XXX | 2000–2999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 02 | CA |
| 2006-10-24 | 323-361-3XXX | 3000–3999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 02 | CA |
| 2006-10-24 | 323-361-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 02 | CA |
| 2006-10-24 | 323-361-5XXX | 5000–5999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 02 | CA |
| 2006-10-24 | 323-361-6XXX | 6000–6999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 02 | CA |
| 2006-10-24 | 323-361-7XXX | 7000–7999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 02 | CA |
| 2006-10-24 | 323-361-8XXX | 8000–8999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 02 | 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.