NumberResearchRecent thousands-block assignments
2 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 586
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 |
|---|---|---|---|---|---|---|---|
| 2009-08-25 | 586-438-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-08-25 | 586-457-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-08-17 | 586-298-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | ROSEVILLE | MI |
| 2009-08-17 | 586-298-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | ROSEVILLE | MI |
| 2009-08-17 | 586-298-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | ROSEVILLE | MI |
| 2009-07-14 | 586-457-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-07-14 | 586-457-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-07-07 | 586-457-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-07-07 | 586-457-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-07-01 | 586-441-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | ROSEVILLE | MI |
| 2009-07-01 | 586-441-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | ROSEVILLE | MI |
| 2009-07-01 | 586-441-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | ROSEVILLE | MI |
| 2009-06-19 | 586-668-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-06-19 | 586-668-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-06-10 | 586-668-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-06-10 | 586-668-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-06-04 | 586-438-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-06-04 | 586-438-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-05-27 | 586-244-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | NEW HAVEN | MI |
| 2009-05-27 | 586-244-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | NEW HAVEN | MI |
| 2009-05-27 | 586-665-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-05-27 | 586-665-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-05-15 | 586-336-8XXX | 8000–8999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ROMEO | MI |
| 2009-05-15 | 586-441-7XXX | 7000–7999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | ROSEVILLE | MI |
| 2009-05-15 | 586-467-3XXX | 3000–3999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | CENTERLINE | MI |
| 2009-05-15 | 586-576-2XXX | 2000–2999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | CENTERLINE | MI |
| 2009-05-15 | 586-685-6XXX | 6000–6999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | UTICA | MI |
| 2009-05-15 | 586-991-8XXX | 8000–8999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | UTICA | MI |
| 2009-05-08 | 586-662-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-05-08 | 586-662-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-05-08 | 586-662-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-05-08 | 586-662-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-05-08 | 586-662-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-04-17 | 586-663-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-04-17 | 586-663-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-04-17 | 586-663-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-04-07 | 586-438-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-04-07 | 586-438-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-03-06 | 586-209-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | ROSEVILLE | MI |
| 2009-03-03 | 586-804-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-02-27 | 586-248-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | RICHMOND | MI |
| 2009-02-26 | 586-718-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-02-26 | 586-718-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WARREN | MI |
| 2009-02-20 | 586-298-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | ROSEVILLE | MI |
| 2009-02-12 | 586-298-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | ROSEVILLE | MI |
| 2009-02-06 | 586-421-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | MT CLEMENS | MI |
| 2009-02-06 | 586-840-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | MT CLEMENS | MI |
| 2009-02-05 | 586-244-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | NEW HAVEN | MI |
| 2009-02-05 | 586-275-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | WARREN | MI |
| 2009-02-05 | 586-298-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | ROSEVILLE | MI |
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.