NumberResearchRecent thousands-block assignments
43 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, 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 |
|---|---|---|---|---|---|---|---|
| 2006-06-09 | 571-339-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | ENGLESIDE | VA |
| 2006-06-06 | 571-309-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2006-06-06 | 571-309-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2006-06-01 | 571-991-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | DALE CITY | VA |
| 2006-06-01 | 571-991-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | DALE CITY | VA |
| 2006-06-01 | 571-991-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DALE CITY | VA |
| 2006-05-30 | 571-209-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | LEESBURG | VA |
| 2006-05-30 | 571-748-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | WSNGTNZN19 | VA |
| 2006-05-30 | 571-748-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | WSNGTNZN19 | VA |
| 2006-05-23 | 571-230-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2006-05-23 | 571-265-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2006-05-23 | 571-423-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2006-05-23 | 571-423-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2006-04-24 | 571-292-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | MANASSAS | VA |
| 2006-04-24 | 571-292-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | MANASSAS | VA |
| 2006-04-18 | 571-230-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2006-04-18 | 571-230-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2006-04-18 | 571-230-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2006-04-18 | 571-230-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2006-04-17 | 571-431-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2006-04-14 | 571-521-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | HERNDON | VA |
| 2006-04-13 | 571-521-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | HERNDON | VA |
| 2006-03-29 | 571-292-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | MANASSAS | VA |
| 2006-03-29 | 571-522-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | BRADDOCK | VA |
| 2006-03-17 | 571-431-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | WSNGTNZN08 | VA |
| 2006-03-17 | 571-431-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | WSNGTNZN08 | VA |
| 2006-03-03 | 571-642-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | ENGLESIDE | VA |
| 2006-03-03 | 571-748-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | WSNGTNZN19 | VA |
| 2006-02-23 | 571-230-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2006-02-23 | 571-230-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2006-02-23 | 571-521-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HERNDON | VA |
| 2006-02-16 | 571-438-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2006-02-16 | 571-438-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2006-02-16 | 571-451-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2006-02-16 | 571-527-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2006-02-16 | 571-721-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2006-02-16 | 571-721-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2006-02-09 | 571-292-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | MANASSAS | VA |
| 2006-01-30 | 571-527-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | WSNGTNZN08 | VA |
| 2006-01-30 | 571-527-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | WSNGTNZN08 | VA |
| 2006-01-30 | 571-527-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | WSNGTNZN08 | VA |
| 2006-01-30 | 571-527-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | WSNGTNZN08 | VA |
| 2006-01-30 | 571-527-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | WSNGTNZN08 | VA |
| 2006-01-13 | 571-265-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2006-01-13 | 571-527-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2006-01-13 | 571-527-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2006-01-13 | 571-527-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2006-01-04 | 571-291-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | LEESBURG | VA |
| 2006-01-03 | 571-230-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
| 2006-01-03 | 571-230-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN17 | VA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.