NumberResearchRecent thousands-block assignments
17 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 424
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 |
|---|---|---|---|---|---|---|---|
| 2007-05-21 | 424-206-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | REDONDO | CA |
| 2007-05-21 | 424-270-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | W ANGELES | CA |
| 2007-05-21 | 424-757-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | TORRANCE | CA |
| 2007-05-21 | 424-757-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | TORRANCE | CA |
| 2007-05-16 | 424-219-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | CMTN GRDN | CA |
| 2007-05-16 | 424-219-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | CMTN GRDN | CA |
| 2007-05-16 | 424-219-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | CMTN GRDN | CA |
| 2007-05-16 | 424-219-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | CMTN GRDN | CA |
| 2007-05-16 | 424-219-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | CMTN GRDN | CA |
| 2007-05-10 | 424-220-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL SEGUNDO | CA |
| 2007-05-09 | 424-229-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | SNMN SNMN | CA |
| 2007-05-08 | 424-645-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN SNMN | CA |
| 2007-05-07 | 424-201-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TORRANCE | CA |
| 2007-05-07 | 424-228-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | SNMN MRVS | CA |
| 2007-05-07 | 424-558-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TORRANCE | CA |
| 2007-04-25 | 424-731-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TORRANCE | CA |
| 2007-04-23 | 424-226-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | AVALON | CA |
| 2007-04-17 | 424-298-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CULVERCITY | CA |
| 2007-04-12 | 424-903-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDONDO | CA |
| 2007-04-06 | 424-288-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2007-04-06 | 424-288-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2007-04-06 | 424-288-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BEVERLYHLS | CA |
| 2007-04-03 | 424-216-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNMN MRVS | CA |
| 2007-03-30 | 424-201-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TORRANCE | CA |
| 2007-03-30 | 424-201-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TORRANCE | CA |
| 2007-03-29 | 424-298-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CULVERCITY | CA |
| 2007-03-29 | 424-750-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | INGLEWOOD | CA |
| 2007-03-28 | 424-225-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL SEGUNDO | CA |
| 2007-03-26 | 424-644-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MALIBU | CA |
| 2007-03-24 | 424-224-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2007-03-24 | 424-224-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2007-03-24 | 424-224-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2007-03-21 | 424-204-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | BEVERLYHLS | CA |
| 2007-03-21 | 424-205-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | CMTN GRDN | CA |
| 2007-03-21 | 424-205-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | CMTN GRDN | CA |
| 2007-03-21 | 424-205-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | CMTN GRDN | CA |
| 2007-03-21 | 424-221-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | CMTN GRDN | CA |
| 2007-03-21 | 424-221-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | CMTN GRDN | CA |
| 2007-03-21 | 424-221-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | CMTN GRDN | CA |
| 2007-03-21 | 424-221-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | CMTN GRDN | CA |
| 2007-03-21 | 424-222-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | LOMITA | CA |
| 2007-03-21 | 424-222-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | LOMITA | CA |
| 2007-03-21 | 424-222-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | LOMITA | CA |
| 2007-03-21 | 424-222-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | LOMITA | CA |
| 2007-03-21 | 424-223-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-03-21 | 424-223-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-03-21 | 424-223-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-03-21 | 424-223-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-03-20 | 424-288-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2007-03-19 | 424-220-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | EL SEGUNDO | 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.