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 410
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-19 | 410-690-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EASTON | MD |
| 2025-12-11 | 410-538-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FORK | MD |
| 2025-12-11 | 410-973-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BERLIN | MD |
| 2025-07-01 | 410-847-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TOWSON | MD |
| 2025-04-08 | 410-623-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MARION | MD |
| 2025-04-08 | 410-973-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BERLIN | MD |
| 2024-08-15 | 410-623-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MARION | MD |
| 2024-08-15 | 410-973-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BERLIN | MD |
| 2024-08-14 | 410-304-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | QUEENSTOWN | MD |
| 2024-08-14 | 410-538-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FORK | MD |
| 2024-08-14 | 410-671-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EDGEWOOD | MD |
| 2024-01-17 | 410-339-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TOWSON | MD |
| 2024-01-17 | 410-817-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FORK | MD |
| 2024-01-17 | 410-998-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PIKESVILLE | MD |
| 2024-01-10 | 410-213-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | OCEAN CITY | MD |
| 2024-01-10 | 410-376-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | VIENNA | MD |
| 2024-01-09 | 410-304-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | QUEENSTOWN | MD |
| 2024-01-09 | 410-315-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SEVERNA PK | MD |
| 2024-01-09 | 410-364-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HILLSBORO | MD |
| 2024-01-09 | 410-425-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SMITH IS | MD |
| 2024-01-09 | 410-438-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SUDLERSVL | MD |
| 2024-01-09 | 410-476-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TRAPPE | MD |
| 2024-01-09 | 410-536-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ARBUTUS | MD |
| 2024-01-09 | 410-623-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MARION | MD |
| 2024-01-09 | 410-784-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DEALISLAND | MD |
| 2024-01-09 | 410-886-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TILGHMAN | MD |
| 2024-01-09 | 410-904-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WATERLO238 | MD |
| 2024-01-08 | 410-397-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WINGATE | MD |
| 2024-01-08 | 410-556-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CHURCHHILL | MD |
| 2024-01-08 | 410-755-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WARWICK | MD |
| 2024-01-08 | 410-781-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ELLICOTTCY | MD |
| 2023-10-18 | 410-919-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ANNAPOLIS | MD |
| 2022-07-06 | 410-348-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | STILL POND | MD |
| 2022-03-11 | 410-286-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NORTHBEACH | MD |
| 2021-08-26 | 410-319-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BALTIMORE | MD |
| 2020-12-30 | 410-621-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PRINCEANNE | MD |
| 2020-12-30 | 410-840-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | REISTERSTN | MD |
| 2020-12-30 | 410-970-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SYKESVILLE | MD |
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.