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 203
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-09-22 | 203-571-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WESTPORT | CT |
| 2025-06-30 | 203-529-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WILTON | CT |
| 2025-06-30 | 203-616-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DANBURY | CT |
| 2025-06-30 | 203-692-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FAIRFIELD | CT |
| 2025-06-30 | 203-713-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MILFORD | CT |
| 2025-03-11 | 203-669-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DARIEN | CT |
| 2025-03-11 | 203-714-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NAUGATUCK | CT |
| 2025-03-11 | 203-718-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CHESHIRE | CT |
| 2025-03-11 | 203-816-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TRUMBULL | CT |
| 2025-03-11 | 203-930-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GREENWICH | CT |
| 2025-03-10 | 203-646-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BRANFORD | CT |
| 2023-07-06 | 203-564-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | STAMFORD | CT |
| 2022-09-12 | 203-442-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEW CANAAN | CT |
| 2022-09-06 | 203-344-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | OLDGRNWICH | CT |
| 2022-09-06 | 203-441-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WOLCOTT | CT |
| 2022-03-16 | 203-379-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MERIDEN | CT |
| 2022-03-16 | 203-493-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GEORGETOWN | CT |
| 2022-03-09 | 203-278-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ANSONIDRBY | CT |
| 2022-03-09 | 203-528-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WATERBURY | CT |
| 2021-09-28 | 203-244-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | RIDGEFIELD | CT |
| 2020-11-13 | 203-793-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WALLINGFD | CT |
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.