NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · 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, all time — NPA 301
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-10-31 | 301-533-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | OAKLAND | MD |
| 2023-07-07 | 301-397-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WSNG236Z13 | MD |
| 2023-03-30 | 301-465-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MYERSVILLE | MD |
| 2022-09-06 | 301-378-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FREDERICK | MD |
| 2021-06-21 | 301-536-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LEONARDTN | MD |
| 2021-05-13 | 301-893-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WSHNGTNZN6 | MD |
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.