NumberResearchRecent thousands-block assignments
2 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, last 30 days — NPA 410
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-02-20 | 410-345-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2024-02-20 | 410-345-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2024-02-08 | 410-538-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | FORK | MD |
| 2024-02-08 | 410-584-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MD | 876D | COCKEYSVL | MD |
| 2024-02-08 | 410-584-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | COCKEYSVL | MD |
| 2024-02-05 | 410-520-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | OCEAN CITY | MD |
| 2024-02-05 | 410-699-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | CHESTERTN | MD |
| 2024-02-02 | 410-421-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | SEVERNA PK | MD |
| 2024-02-02 | 410-421-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | SEVERNA PK | MD |
| 2024-01-30 | 410-762-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MD | 876D | GLENBURNIE | MD |
| 2024-01-29 | 410-261-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-01-29 | 410-801-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-01-22 | 410-324-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | TOWSON | MD |
| 2024-01-22 | 410-339-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | TOWSON | MD |
| 2024-01-22 | 410-339-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MD | 876D | TOWSON | MD |
| 2024-01-22 | 410-453-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | TOWSON | MD |
| 2024-01-22 | 410-453-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MD | 876D | TOWSON | 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 |
| 2024-01-16 | 410-237-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-01-16 | 410-237-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-01-16 | 410-261-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-01-16 | 410-759-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-01-16 | 410-759-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-01-16 | 410-759-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-01-16 | 410-801-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | 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 |
| 2024-01-03 | 410-536-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | ARBUTUS | MD |
| 2023-11-21 | 410-352-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | BISHOPVL | MD |
| 2023-11-13 | 410-793-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SEVERNA PK | MD |
| 2023-10-18 | 410-919-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ANNAPOLIS | MD |
| 2023-08-05 | 410-634-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | RIDGELY | MD |
| 2023-07-19 | 410-478-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | 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.