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 |
|---|---|---|---|---|---|---|---|
| 2009-06-12 | 571-250-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | HERNDON | VA |
| 2009-06-10 | 571-499-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN17 | VA |
| 2009-05-27 | 571-357-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - DC | 7529 | WSNGTNZN08 | VA |
| 2009-05-22 | 571-357-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | WSNGTNZN08 | VA |
| 2009-05-14 | 571-293-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEESBURG | VA |
| 2009-05-14 | 571-402-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | DALE CITY | VA |
| 2009-05-12 | 571-354-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSNGTNZN19 | VA |
| 2009-05-06 | 571-606-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | MANASSAS | VA |
| 2009-05-04 | 571-499-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN17 | VA |
| 2009-04-30 | 571-402-3XXX | 3000–3999 | Assigned | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | DALE CITY | VA |
| 2009-04-28 | 571-327-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN17 | VA |
| 2009-04-27 | 571-327-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN17 | VA |
| 2009-04-23 | 571-402-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DALE CITY | VA |
| 2009-04-15 | 571-315-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | HERNDON | VA |
| 2009-04-15 | 571-315-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | HERNDON | VA |
| 2009-04-09 | 571-606-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MANASSAS | VA |
| 2009-04-09 | 571-606-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MANASSAS | VA |
| 2009-04-09 | 571-606-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MANASSAS | VA |
| 2009-03-30 | 571-255-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSNGTNZN08 | VA |
| 2009-03-30 | 571-255-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSNGTNZN08 | VA |
| 2009-03-26 | 571-346-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | HERNDON | VA |
| 2009-03-26 | 571-572-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | OCCOQUAN | VA |
| 2009-03-25 | 571-354-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSNGTNZN19 | VA |
| 2009-03-25 | 571-354-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSNGTNZN19 | VA |
| 2009-03-25 | 571-354-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSNGTNZN19 | VA |
| 2009-03-20 | 571-402-0XXX | 0000–0999 | Assigned | CORETEL VIRGINIA, LLC - VA | 5832 | DALE CITY | VA |
| 2009-03-17 | 571-222-3XXX | 3000–3999 | Assigned | CORETEL VIRGINIA, LLC - VA | 5832 | HAYMARKET | VA |
| 2009-03-17 | 571-286-3XXX | 3000–3999 | Assigned | CORETEL VIRGINIA, LLC - VA | 5832 | WSNGTNZN17 | VA |
| 2009-03-17 | 571-408-7XXX | 7000–7999 | Assigned | CORETEL VIRGINIA, LLC - VA | 5832 | OCCOQUAN | VA |
| 2009-03-17 | 571-932-2XXX | 2000–2999 | Assigned | CORETEL VIRGINIA, LLC - VA | 5832 | LORTONMTRO | VA |
| 2009-03-17 | 571-933-2XXX | 2000–2999 | Assigned | CORETEL VIRGINIA, LLC - VA | 5832 | DULLESMTRO | VA |
| 2009-03-17 | 571-969-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN08 | VA |
| 2009-03-10 | 571-408-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | OCCOQUAN | VA |
| 2009-03-10 | 571-501-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-501-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-501-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-501-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-501-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-501-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-501-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-501-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-501-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-501-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-502-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-502-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-502-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-502-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-505-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-505-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2009-03-10 | 571-505-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | 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.