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 |
|---|---|---|---|---|---|---|---|
| 2010-01-07 | 571-318-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN19 | VA |
| 2010-01-07 | 571-318-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN19 | VA |
| 2009-12-23 | 571-494-4XXX | 4000–4999 | Assigned | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | TRIANGLE | VA |
| 2009-12-22 | 571-455-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN19 | VA |
| 2009-12-16 | 571-329-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN08 | VA |
| 2009-12-16 | 571-393-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MANASSAS | VA |
| 2009-12-10 | 571-208-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MANASSAS | VA |
| 2009-12-10 | 571-208-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MANASSAS | VA |
| 2009-11-30 | 571-882-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | WSNGTNZN08 | VA |
| 2009-11-30 | 571-882-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | WSNGTNZN08 | VA |
| 2009-11-30 | 571-882-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | WSNGTNZN08 | VA |
| 2009-11-30 | 571-969-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | WSNGTNZN08 | VA |
| 2009-11-30 | 571-969-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | WSNGTNZN08 | VA |
| 2009-11-23 | 571-572-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | OCCOQUAN | VA |
| 2009-11-23 | 571-575-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | OCCOQUAN | VA |
| 2009-11-19 | 571-335-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-11-18 | 571-422-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN17 | VA |
| 2009-11-18 | 571-471-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HERNDON | VA |
| 2009-11-18 | 571-471-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HERNDON | VA |
| 2009-11-16 | 571-208-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | MANASSAS | VA |
| 2009-11-16 | 571-318-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN19 | VA |
| 2009-11-16 | 571-318-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN19 | VA |
| 2009-11-16 | 571-384-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN08 | VA |
| 2009-11-04 | 571-425-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-11-04 | 571-425-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-11-02 | 571-266-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HERNDON | VA |
| 2009-11-02 | 571-266-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HERNDON | VA |
| 2009-10-29 | 571-230-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-10-29 | 571-249-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-10-29 | 571-249-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-10-09 | 571-250-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - DC | 7529 | HERNDON | VA |
| 2009-10-09 | 571-250-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - DC | 7529 | HERNDON | VA |
| 2009-10-09 | 571-250-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - DC | 7529 | HERNDON | VA |
| 2009-10-09 | 571-250-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - DC | 7529 | HERNDON | VA |
| 2009-10-06 | 571-449-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | HERNDON | VA |
| 2009-10-05 | 571-249-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN17 | VA |
| 2009-10-05 | 571-420-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LEESBURG | VA |
| 2009-10-05 | 571-420-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LEESBURG | VA |
| 2009-10-02 | 571-329-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN08 | VA |
| 2009-09-17 | 571-575-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | OCCOQUAN | VA |
| 2009-09-17 | 571-575-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | OCCOQUAN | VA |
| 2009-09-17 | 571-575-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | OCCOQUAN | VA |
| 2009-09-10 | 571-318-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN19 | VA |
| 2009-09-08 | 571-208-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | MANASSAS | VA |
| 2009-09-04 | 571-346-4XXX | 4000–4999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | HERNDON | VA |
| 2009-09-04 | 571-346-5XXX | 5000–5999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | HERNDON | VA |
| 2009-09-04 | 571-346-6XXX | 6000–6999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | HERNDON | VA |
| 2009-09-04 | 571-346-8XXX | 8000–8999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | HERNDON | VA |
| 2009-08-31 | 571-249-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | WSNGTNZN17 | VA |
| 2009-08-31 | 571-249-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | WSNGTNZN17 | 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.