NumberResearchRecent thousands-block assignments
4 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 443
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 |
|---|---|---|---|---|---|---|---|
| 2026-09-16 | 443-315-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CATONSVL | MD |
| 2026-09-16 | 443-315-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CATONSVL | MD |
| 2026-09-01 | 443-305-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ARGRGBSNIS | MD |
| 2026-09-01 | 443-305-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ARGRGBSNIS | MD |
| 2026-02-20 | 443-874-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2025-09-17 | 443-495-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PARKVILLE | MD |
| 2025-09-03 | 443-460-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ESSEX | MD |
| 2025-09-03 | 443-505-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ESSEX | MD |
| 2025-05-02 | 443-431-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RANDALLSTN | MD |
| 2025-04-29 | 443-316-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WOODLAWN | MD |
| 2025-04-23 | 443-501-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2025-04-21 | 443-505-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ESSEX | MD |
| 2025-04-21 | 443-505-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ESSEX | MD |
| 2025-03-27 | 443-599-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SEVERN | MD |
| 2025-03-27 | 443-599-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SEVERN | MD |
| 2025-03-25 | 443-517-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | GLENBURNIE | MD |
| 2025-03-25 | 443-517-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | GLENBURNIE | MD |
| 2025-03-24 | 443-597-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SEVERNA PK | MD |
| 2025-03-24 | 443-597-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SEVERNA PK | MD |
| 2025-02-20 | 443-471-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2025-01-15 | 443-780-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WOODLAWN | MD |
| 2025-01-15 | 443-893-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WOODLAWN | MD |
| 2024-12-27 | 443-393-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | COLUMBIA | MD |
| 2024-12-27 | 443-393-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | COLUMBIA | MD |
| 2024-12-27 | 443-505-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ESSEX | MD |
| 2024-12-27 | 443-656-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | COLUMBIA | MD |
| 2024-12-27 | 443-656-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | COLUMBIA | MD |
| 2024-12-19 | 443-388-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-19 | 443-740-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-19 | 443-932-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-19 | 443-948-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-19 | 443-948-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-19 | 443-963-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-19 | 443-965-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-11-06 | 443-501-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2024-10-30 | 443-685-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SEVERN | MD |
| 2024-09-03 | 443-501-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2024-07-30 | 443-836-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-07-30 | 443-839-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-07-30 | 443-869-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-07-30 | 443-869-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-07-15 | 443-551-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WOODLAWN | MD |
| 2024-06-26 | 443-940-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2024-05-21 | 443-597-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SEVERNA PK | MD |
| 2024-04-30 | 443-806-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-04-30 | 443-806-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-04-30 | 443-806-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-04-30 | 443-806-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-04-30 | 443-806-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-04-30 | 443-806-5XXX | 5000–5999 | 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.