NumberResearchRecent thousands-block assignments
10 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 406
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 |
|---|---|---|---|---|---|---|---|
| 2007-11-16 | 406-794-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | BILLINGS | MT |
| 2007-11-16 | 406-839-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | BILLINGS | MT |
| 2007-11-05 | 406-839-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BILLINGS | MT |
| 2007-10-19 | 406-393-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | SOMERS | MT |
| 2007-10-19 | 406-709-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | LAKESIDE | MT |
| 2007-10-18 | 406-872-2XXX | 2000–2999 | Assigned | WESTERN MONTANA COMMUNITYTEL INC. - MT | 986F | POLSON | MT |
| 2007-10-16 | 406-241-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | MISSOULA | MT |
| 2007-10-16 | 406-241-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | MISSOULA | MT |
| 2007-10-16 | 406-241-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | MISSOULA | MT |
| 2007-10-11 | 406-612-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | SWAN LAKE | MT |
| 2007-10-11 | 406-692-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | YELLOW BAY | MT |
| 2007-10-11 | 406-820-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | OLNEY | MT |
| 2007-10-11 | 406-991-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | MARION | MT |
| 2007-09-21 | 406-422-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | HELENA | MT |
| 2007-09-19 | 406-493-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MISSOULA | MT |
| 2007-09-14 | 406-545-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | BILLINGS | MT |
| 2007-09-11 | 406-534-4XXX | 4000–4999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BILLINGS | MT |
| 2007-09-05 | 406-545-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | BILLINGS | MT |
| 2007-08-29 | 406-217-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | GREATFALLS | MT |
| 2007-08-29 | 406-217-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | GREATFALLS | MT |
| 2007-07-31 | 406-631-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | ELMO | MT |
| 2007-07-31 | 406-929-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | HUNGRYHORS | MT |
| 2007-07-11 | 406-241-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | MISSOULA | MT |
| 2007-07-11 | 406-241-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | MISSOULA | MT |
| 2007-07-11 | 406-241-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | MISSOULA | MT |
| 2007-07-11 | 406-794-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | BILLINGS | MT |
| 2007-07-11 | 406-794-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | BILLINGS | MT |
| 2007-07-11 | 406-794-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | BILLINGS | MT |
| 2007-06-15 | 406-533-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | BUTTE | MT |
| 2007-06-11 | 406-217-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | GREATFALLS | MT |
| 2007-06-11 | 406-217-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | GREATFALLS | MT |
| 2007-06-07 | 406-545-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | BILLINGS | MT |
| 2007-06-07 | 406-545-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | BILLINGS | MT |
| 2007-05-30 | 406-643-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | NO PARKMAN | MT |
| 2007-05-25 | 406-840-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | SILVERTIP | MT |
| 2007-05-15 | 406-794-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | BILLINGS | MT |
| 2007-05-15 | 406-794-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | BILLINGS | MT |
| 2007-05-03 | 406-846-4XXX | 4000–4999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | DEER LODGE | MT |
| 2007-03-21 | 406-445-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | RED LODGE | MT |
| 2007-03-19 | 406-226-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | EGLACIERPK | MT |
| 2007-03-19 | 406-356-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MT | 453F | FORSYTH | MT |
| 2007-03-19 | 406-420-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | BIGFORK | MT |
| 2007-03-19 | 406-571-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | FINLEY PT | MT |
| 2007-03-19 | 406-662-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | BRIDGER | MT |
| 2007-03-19 | 406-686-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | CLYDE PARK | MT |
| 2007-03-19 | 406-763-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | GALATNGTWY | MT |
| 2007-03-19 | 406-838-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | COOKE CITY | MT |
| 2007-03-19 | 406-888-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MT | 453F | W GLACIER | MT |
| 2007-03-16 | 406-290-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | COLUMBUS | MT |
| 2007-02-21 | 406-225-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MT | 453F | BOULDER | MT |
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.