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 |
|---|---|---|---|---|---|---|---|
| 2009-01-23 | 585-351-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-01-23 | 585-433-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | VICTOR | NY |
| 2009-01-23 | 585-506-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-01-23 | 585-563-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-01-06 | 585-331-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ALBION | NY |
| 2009-01-06 | 585-645-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | WEBSTER | NY |
| 2009-01-06 | 585-808-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | WELLSVILLE | NY |
| 2009-01-06 | 585-815-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BATAVIA | NY |
| 2009-01-06 | 585-857-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2009-01-06 | 585-857-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2008-12-29 | 585-201-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | BATAVIA | NY |
| 2008-12-29 | 585-204-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | DANSVILLE | NY |
| 2008-12-29 | 585-205-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | MIDDLEPORT | NY |
| 2008-12-29 | 585-209-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | CUBA | NY |
| 2008-12-29 | 585-237-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | PERRY | NY |
| 2008-12-29 | 585-376-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | OLEAN | NY |
| 2008-12-29 | 585-496-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | CHAFFEE | NY |
| 2008-12-29 | 585-502-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | LE ROY | NY |
| 2008-12-29 | 585-542-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | AKRON | NY |
| 2008-12-29 | 585-653-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | ARCADE | NY |
| 2008-12-29 | 585-678-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | FAIRPORT | NY |
| 2008-12-29 | 585-687-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | EASTAURORA | NY |
| 2008-12-29 | 585-708-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | ATTICA | NY |
| 2008-12-29 | 585-789-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | EROCHESTER | NY |
| 2008-12-29 | 585-902-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | ALDEN | NY |
| 2008-12-08 | 585-857-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2008-12-08 | 585-857-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2008-12-04 | 585-287-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ROCHESTER | NY |
| 2008-11-25 | 585-351-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ROCHESTER | NY |
| 2008-11-17 | 585-433-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | VICTOR | NY |
| 2008-11-05 | 585-205-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | MIDDLEPORT | NY |
| 2008-11-05 | 585-831-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2008-11-05 | 585-831-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2008-11-03 | 585-789-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | EROCHESTER | NY |
| 2008-10-29 | 585-391-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BROCKPORT | NY |
| 2008-10-14 | 585-789-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | EROCHESTER | NY |
| 2008-10-03 | 585-205-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | MIDDLEPORT | NY |
| 2008-10-03 | 585-794-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2008-10-03 | 585-815-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BATAVIA | NY |
| 2008-09-30 | 585-645-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | WEBSTER | NY |
| 2008-09-22 | 585-318-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | MEDINA | NY |
| 2008-09-18 | 585-287-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ROCHESTER | NY |
| 2008-09-17 | 585-657-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | HOLCOMB | NY |
| 2008-09-04 | 585-268-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BELMONT | NY |
| 2008-09-03 | 585-210-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | ROCHESTER | NY |
| 2008-09-03 | 585-331-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ALBION | NY |
| 2008-09-03 | 585-447-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | GENESEO | NY |
| 2008-09-03 | 585-645-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | WEBSTER | NY |
| 2008-09-03 | 585-689-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BLISS | NY |
| 2008-09-03 | 585-694-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | 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.