NumberResearchRecent thousands-block assignments
13 blocks assigned in May 2026 · from the daily NANPA thousands-block report, 09/19/2026
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, May 2026 — NPA 442
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-05-29 | 442-473-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VTVL HSPR | CA |
| 2026-05-29 | 442-493-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VTVL HSPR | CA |
| 2026-05-29 | 442-894-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL CENTRO | CA |
| 2026-05-29 | 442-894-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL CENTRO | CA |
| 2026-05-29 | 442-894-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL CENTRO | CA |
| 2026-05-27 | 442-472-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7147 | SAN MARCOS | CA |
| 2026-05-27 | 442-472-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7147 | SAN MARCOS | CA |
| 2026-05-19 | 442-445-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | BISHOP | CA |
| 2026-05-14 | 442-495-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7147 | OCSD PDTN | CA |
| 2026-05-11 | 442-214-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TWNTYNPLMS | CA |
| 2026-05-06 | 442-358-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | RAMONA | CA |
| 2026-05-06 | 442-487-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | OCSD CRLS | CA |
| 2026-05-06 | 442-498-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | CALIFORNCY | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.