NumberResearchRecent thousands-block assignments
2 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 |
|---|---|---|---|---|---|---|---|
| 2015-06-10 | 586-245-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-245-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-245-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-245-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-602-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-602-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-602-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-602-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-602-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-602-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-602-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-602-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-602-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-602-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-622-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-622-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-622-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-622-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-622-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-622-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-622-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-622-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-622-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-622-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-881-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-881-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-881-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-881-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-881-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-881-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-881-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-881-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-881-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-10 | 586-881-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MT CLEMENS | MI |
| 2015-06-09 | 586-460-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARMADA | MI |
| 2015-06-09 | 586-785-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ROMEO | MI |
| 2015-06-05 | 586-434-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WARREN | MI |
| 2015-06-05 | 586-434-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WARREN | MI |
| 2015-06-05 | 586-434-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WARREN | MI |
| 2015-06-05 | 586-434-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WARREN | MI |
| 2015-06-05 | 586-434-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WARREN | MI |
| 2015-06-05 | 586-434-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WARREN | MI |
| 2015-04-17 | 586-459-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | CENTERLINE | MI |
| 2015-04-17 | 586-459-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | CENTERLINE | MI |
| 2015-04-15 | 586-785-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | ROMEO | MI |
| 2015-04-14 | 586-459-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | CENTERLINE | MI |
| 2015-04-06 | 586-230-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WARREN | MI |
| 2015-04-06 | 586-230-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WARREN | MI |
| 2015-04-06 | 586-230-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WARREN | MI |
| 2015-04-06 | 586-230-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WARREN | MI |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.