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 571
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 |
|---|---|---|---|---|---|---|---|
| 2026-06-15 | 571-770-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2026-06-01 | 571-770-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2026-04-30 | 571-850-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2026-03-11 | 571-636-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | HAYMARKET | VA |
| 2024-11-24 | 571-690-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2024-09-17 | 571-680-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2024-03-15 | 571-417-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2024-01-18 | 571-627-0XXX | 0000–0999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-11-17 | 571-627-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-11-17 | 571-627-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-11-17 | 571-627-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-11-17 | 571-627-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-11-17 | 571-627-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-11-17 | 571-627-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-11-17 | 571-627-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-08-22 | 571-654-0XXX | 0000–0999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-08-22 | 571-654-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-08-22 | 571-654-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-08-22 | 571-654-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-08-22 | 571-654-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-08-22 | 571-654-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-08-22 | 571-654-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-08-22 | 571-654-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-08-22 | 571-654-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-08-22 | 571-654-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2023-02-22 | 571-751-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | ARCOLA | VA |
| 2022-08-10 | 571-578-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2022-08-10 | 571-578-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2021-05-29 | 571-837-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2020-09-24 | 571-498-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2020-07-27 | 571-601-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2018-09-13 | 571-831-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2018-01-05 | 571-831-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2017-11-08 | 571-831-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2015-12-21 | 571-510-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2015-03-12 | 571-349-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | ARCOLA | VA |
| 2014-04-14 | 571-510-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2013-05-14 | 571-367-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | ARCOLA | VA |
| 2012-11-20 | 571-445-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | HAYMARKET | VA |
| 2010-07-09 | 571-293-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2005-08-26 | 571-209-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
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.