NumberResearchRecent thousands-block assignments
0 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, all time — NPA 310
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2002-11-08 | 310-630-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-756-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-756-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-756-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-756-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-756-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-800-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-800-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-800-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-800-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-800-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-800-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-866-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN SNMN | CA |
| 2002-11-08 | 310-866-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN SNMN | CA |
| 2002-11-08 | 310-866-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN SNMN | CA |
| 2002-11-08 | 310-866-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN SNMN | CA |
| 2002-11-08 | 310-866-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN SNMN | CA |
| 2002-11-08 | 310-866-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN SNMN | CA |
| 2002-11-08 | 310-866-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN SNMN | CA |
| 2002-11-08 | 310-866-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN SNMN | CA |
| 2002-11-08 | 310-999-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-999-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-999-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-999-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-999-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-08 | 310-999-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2002-11-07 | 310-437-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN MRVS | CA |
| 2002-11-07 | 310-658-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | EL SEGUNDO | CA |
| 2002-11-07 | 310-658-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | EL SEGUNDO | CA |
| 2002-11-07 | 310-760-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | EL SEGUNDO | CA |
| 2002-11-07 | 310-872-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2002-11-07 | 310-872-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2002-11-07 | 310-872-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2002-11-07 | 310-872-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2002-11-07 | 310-872-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2002-11-07 | 310-971-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2002-11-05 | 310-227-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | EL SEGUNDO | CA |
| 2002-11-05 | 310-570-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNMN SNMN | CA |
| 2002-11-05 | 310-895-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CULVERCITY | CA |
| 2002-11-05 | 310-903-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2002-11-04 | 310-218-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TORRANCE | CA |
| 2002-11-04 | 310-431-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | INGLEWOOD | CA |
| 2002-10-31 | 310-948-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | W ANGELES | CA |
| 2002-10-31 | 310-948-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | W ANGELES | CA |
| 2002-10-31 | 310-948-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | W ANGELES | CA |
| 2002-10-31 | 310-948-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | W ANGELES | CA |
| 2002-10-24 | 310-279-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | BEVERLYHLS | CA |
| 2002-10-24 | 310-279-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | BEVERLYHLS | CA |
| 2002-10-02 | 310-602-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LOMITA | CA |
| 2002-09-27 | 310-862-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | SNMN MRVS | 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.