NumberResearchRecent thousands-block assignments
43 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 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 |
|---|---|---|---|---|---|---|---|
| 2009-03-10 | 571-505-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-505-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-505-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-505-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-505-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-505-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-505-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-882-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN08 | VA |
| 2009-03-10 | 571-882-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN08 | VA |
| 2009-03-09 | 571-471-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HERNDON | VA |
| 2009-03-09 | 571-471-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HERNDON | VA |
| 2009-03-09 | 571-471-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HERNDON | VA |
| 2009-03-09 | 571-471-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HERNDON | VA |
| 2009-03-09 | 571-471-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HERNDON | VA |
| 2009-03-09 | 571-471-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HERNDON | VA |
| 2009-03-09 | 571-471-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HERNDON | VA |
| 2009-03-09 | 571-471-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HERNDON | VA |
| 2009-03-05 | 571-408-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | OCCOQUAN | VA |
| 2009-03-04 | 571-287-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | HERNDON | VA |
| 2009-02-27 | 571-577-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LEESBURG | VA |
| 2009-02-27 | 571-577-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LEESBURG | VA |
| 2009-02-27 | 571-577-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LEESBURG | VA |
| 2009-02-27 | 571-577-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LEESBURG | VA |
| 2009-02-11 | 571-357-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN08 | VA |
| 2009-02-05 | 571-255-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN08 | VA |
| 2009-02-03 | 571-399-0XXX | 0000–0999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | INDENDNTHL | VA |
| 2009-02-03 | 571-399-1XXX | 1000–1999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | INDENDNTHL | VA |
| 2009-02-03 | 571-399-2XXX | 2000–2999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | INDENDNTHL | VA |
| 2009-02-03 | 571-420-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LEESBURG | VA |
| 2009-01-30 | 571-291-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LEESBURG | VA |
| 2009-01-29 | 571-255-1XXX | 1000–1999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | WSNGTNZN08 | VA |
| 2009-01-29 | 571-255-2XXX | 2000–2999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | WSNGTNZN08 | VA |
| 2009-01-29 | 571-255-3XXX | 3000–3999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | WSNGTNZN08 | VA |
| 2009-01-29 | 571-255-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | WSNGTNZN08 | VA |
| 2009-01-29 | 571-255-5XXX | 5000–5999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | WSNGTNZN08 | VA |
| 2009-01-29 | 571-286-4XXX | 4000–4999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | WSNGTNZN17 | VA |
| 2009-01-29 | 571-308-7XXX | 7000–7999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | WSNGTNZN19 | VA |
| 2009-01-29 | 571-766-4XXX | 4000–4999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | WSNGTNZN17 | VA |
| 2009-01-29 | 571-766-5XXX | 5000–5999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | WSNGTNZN17 | VA |
| 2009-01-29 | 571-931-7XXX | 7000–7999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | TRIANGLE | VA |
| 2009-01-29 | 571-931-8XXX | 8000–8999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | TRIANGLE | VA |
| 2009-01-20 | 571-606-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MANASSAS | VA |
| 2009-01-20 | 571-606-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MANASSAS | VA |
| 2009-01-15 | 571-379-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MANASSAS | VA |
| 2009-01-14 | 571-248-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | HAYMARKET | VA |
| 2009-01-14 | 571-303-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | WSNGTNZN08 | VA |
| 2009-01-14 | 571-308-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | WSNGTNZN19 | VA |
| 2009-01-14 | 571-308-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | WSNGTNZN19 | VA |
| 2009-01-14 | 571-314-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | WSNGTNZN17 | VA |
| 2009-01-14 | 571-339-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | ENGLESIDE | VA |
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.