NumberResearchRecent thousands-block assignments
5 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 585
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 |
|---|---|---|---|---|---|---|---|
| 2006-01-09 | 585-490-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | ROCHESTER | NY |
| 2006-01-09 | 585-490-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | ROCHESTER | NY |
| 2006-01-05 | 585-478-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2006-01-05 | 585-478-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2006-01-05 | 585-478-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2006-01-05 | 585-478-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2006-01-05 | 585-478-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2006-01-05 | 585-490-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2006-01-05 | 585-813-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BATAVIA | NY |
| 2005-12-29 | 585-861-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BATAVIA | NY |
| 2005-12-29 | 585-861-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BATAVIA | NY |
| 2005-12-09 | 585-478-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-12-09 | 585-902-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ALDEN | NY |
| 2005-12-08 | 585-542-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | AKRON | NY |
| 2005-12-08 | 585-687-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | EASTAURORA | NY |
| 2005-12-07 | 585-478-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-12-07 | 585-519-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | GENESEO | NY |
| 2005-12-07 | 585-813-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BATAVIA | NY |
| 2005-11-08 | 585-478-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | ROCHESTER | NY |
| 2005-11-02 | 585-208-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-11-02 | 585-472-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-11-02 | 585-472-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-10-14 | 585-490-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-10-07 | 585-208-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-10-07 | 585-208-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-10-07 | 585-208-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-10-07 | 585-208-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-10-07 | 585-322-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BLISS | NY |
| 2005-10-07 | 585-563-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ROCHESTER | NY |
| 2005-10-07 | 585-563-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ROCHESTER | NY |
| 2005-09-23 | 585-257-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HOLCOMB | NY |
| 2005-09-23 | 585-494-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | BERGEN | NY |
| 2005-09-23 | 585-658-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MT MORRIS | NY |
| 2005-09-23 | 585-682-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | WATERPORT | NY |
| 2005-09-23 | 585-928-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | BOLIVAR | NY |
| 2005-09-23 | 585-948-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | OAKFIELD | NY |
| 2005-09-14 | 585-730-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-09-08 | 585-208-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-09-08 | 585-208-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-09-08 | 585-208-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-09-08 | 585-208-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2005-09-08 | 585-217-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | WEBSTER | NY |
| 2005-09-08 | 585-545-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | WEBSTER | NY |
| 2005-09-08 | 585-590-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ALBION | NY |
| 2005-09-08 | 585-610-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | WELLSVILLE | NY |
| 2005-09-08 | 585-610-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | WELLSVILLE | NY |
| 2005-09-06 | 585-398-5XXX | 5000–5999 | Assigned | FRONTIER TELEPHONE OF ROCHESTER, INC. | 0121 | VICTOR | NY |
| 2005-08-29 | 585-216-8XXX | 8000–8999 | Assigned | FRONTIER TELEPHONE OF ROCHESTER, INC. | 0121 | WEBSTER | NY |
| 2005-08-26 | 585-406-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | ROCHESTER | NY |
| 2005-08-19 | 585-512-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | ROCHESTER | NY |
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.