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 |
|---|---|---|---|---|---|---|---|
| 2008-06-09 | 571-405-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | WSNGTNZN17 | VA |
| 2008-06-04 | 571-403-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSNGTNZN08 | VA |
| 2008-06-04 | 571-766-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | WSNGTNZN17 | VA |
| 2008-06-03 | 571-287-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | HERNDON | VA |
| 2008-05-29 | 571-282-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSNGTNZN17 | VA |
| 2008-05-29 | 571-282-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSNGTNZN17 | VA |
| 2008-05-29 | 571-287-2XXX | 2000–2999 | Assigned | ONVOY, LLC - VA | 138E | HERNDON | VA |
| 2008-05-29 | 571-490-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSNGTNZN19 | VA |
| 2008-05-29 | 571-765-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSNGTNZN17 | VA |
| 2008-05-21 | 571-384-1XXX | 1000–1999 | Assigned | ONVOY, LLC - VA | 138E | WSNGTNZN08 | VA |
| 2008-05-21 | 571-490-7XXX | 7000–7999 | Assigned | ONVOY, LLC - VA | 138E | WSNGTNZN19 | VA |
| 2008-05-21 | 571-765-4XXX | 4000–4999 | Assigned | ONVOY, LLC - VA | 138E | WSNGTNZN17 | VA |
| 2008-05-19 | 571-315-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | HERNDON | VA |
| 2008-05-19 | 571-315-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | HERNDON | VA |
| 2008-05-19 | 571-315-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | HERNDON | VA |
| 2008-05-15 | 571-405-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN17 | VA |
| 2008-05-15 | 571-405-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN17 | VA |
| 2008-05-15 | 571-408-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | OCCOQUAN | VA |
| 2008-05-15 | 571-439-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | LEESBURG | VA |
| 2008-05-15 | 571-529-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN19 | VA |
| 2008-05-15 | 571-765-8XXX | 8000–8999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | WSNGTNZN17 | VA |
| 2008-05-15 | 571-765-9XXX | 9000–9999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | WSNGTNZN17 | VA |
| 2008-05-14 | 571-765-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | WSNGTNZN17 | VA |
| 2008-05-14 | 571-765-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | WSNGTNZN17 | VA |
| 2008-05-08 | 571-299-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | HERNDON | VA |
| 2008-05-08 | 571-299-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | HERNDON | VA |
| 2008-05-07 | 571-322-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | ENGLESIDE | VA |
| 2008-05-06 | 571-384-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | WSNGTNZN08 | VA |
| 2008-05-06 | 571-384-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | WSNGTNZN08 | VA |
| 2008-05-06 | 571-384-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | WSNGTNZN08 | VA |
| 2008-05-01 | 571-297-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | WSNGTNZN17 | VA |
| 2008-05-01 | 571-297-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | WSNGTNZN17 | VA |
| 2008-04-24 | 571-374-3XXX | 3000–3999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | INDENDNTHL | VA |
| 2008-04-24 | 571-374-4XXX | 4000–4999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | INDENDNTHL | VA |
| 2008-04-24 | 571-765-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | WSNGTNZN17 | VA |
| 2008-04-18 | 571-766-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | WSNGTNZN17 | VA |
| 2008-04-15 | 571-287-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | HERNDON | VA |
| 2008-04-15 | 571-287-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | HERNDON | VA |
| 2008-04-10 | 571-340-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN19 | VA |
| 2008-04-10 | 571-340-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN19 | VA |
| 2008-04-10 | 571-340-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN19 | VA |
| 2008-04-09 | 571-468-0XXX | 0000–0999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | WSNGTNZN17 | VA |
| 2008-04-09 | 571-468-1XXX | 1000–1999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | WSNGTNZN17 | VA |
| 2008-04-09 | 571-468-2XXX | 2000–2999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | WSNGTNZN17 | VA |
| 2008-04-09 | 571-468-3XXX | 3000–3999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | WSNGTNZN17 | VA |
| 2008-04-09 | 571-468-4XXX | 4000–4999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | WSNGTNZN17 | VA |
| 2008-04-09 | 571-468-5XXX | 5000–5999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | WSNGTNZN17 | VA |
| 2008-04-09 | 571-468-6XXX | 6000–6999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | WSNGTNZN17 | VA |
| 2008-04-09 | 571-468-7XXX | 7000–7999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | WSNGTNZN17 | VA |
| 2008-04-09 | 571-468-8XXX | 8000–8999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | 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.