NumberResearchRecent thousands-block assignments
12 blocks assigned in December 2025 · 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, December 2025 — NPA 574
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-12-17 | 574-412-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IN | 097D | SOUTH BEND | IN |
| 2025-12-17 | 574-783-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | LUCERNE | IN |
| 2025-12-17 | 574-944-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | TWELVEMILE | IN |
| 2025-12-11 | 574-663-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IN | 097D | MIDDLEBURY | IN |
| 2025-12-10 | 574-313-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FLORA | IN |
| 2025-12-10 | 574-414-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | SOUTH BEND | IN |
| 2025-12-10 | 574-546-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BREMEN | IN |
| 2025-12-10 | 574-653-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | KEWANNA | IN |
| 2025-12-10 | 574-892-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ARGOS | IN |
| 2025-12-10 | 574-943-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | IDAVILLE | IN |
| 2025-12-04 | 574-415-0XXX | 0000–0999 | Assigned | WAVENATION, LLC | 700J | SOUTH BEND | IN |
| 2025-12-03 | 574-407-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | GOSHEN | IN |
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.