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 |
|---|---|---|---|---|---|---|---|
| 2014-09-03 | 585-433-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | VICTOR | NY |
| 2014-09-03 | 585-446-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | W WEBSTER | NY |
| 2014-09-03 | 585-468-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NUNDA | NY |
| 2014-09-03 | 585-476-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DALTON | NY |
| 2014-09-03 | 585-488-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SPENCERPT | NY |
| 2014-09-03 | 585-493-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CASTILE | NY |
| 2014-09-03 | 585-497-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HONEOYEFLS | NY |
| 2014-09-03 | 585-526-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | STANLEY | NY |
| 2014-09-03 | 585-534-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ATLANTA | NY |
| 2014-09-03 | 585-558-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WARSAW | NY |
| 2014-09-03 | 585-572-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | LIVONIA | NY |
| 2014-09-03 | 585-632-2XXX | 2000–2999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BERGEN | NY |
| 2014-09-03 | 585-636-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HAMLIN | NY |
| 2014-09-03 | 585-669-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SPRINGWTR | NY |
| 2014-09-03 | 585-763-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WYOMING | NY |
| 2014-09-03 | 585-883-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MT MORRIS | NY |
| 2014-09-03 | 585-888-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SCOTTSVL | NY |
| 2014-09-02 | 585-302-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PERRY | NY |
| 2014-09-02 | 585-443-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GENESEO | NY |
| 2014-08-29 | 585-364-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FAIRPORT | NY |
| 2014-08-28 | 585-337-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CANANDAGUA | NY |
| 2014-08-28 | 585-363-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2014-08-28 | 585-363-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2014-08-28 | 585-438-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | AVON | NY |
| 2014-08-28 | 585-485-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | EROCHESTER | NY |
| 2014-08-22 | 585-363-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2014-08-22 | 585-363-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2014-08-15 | 585-363-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2014-08-15 | 585-485-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | EROCHESTER | NY |
| 2014-08-15 | 585-485-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | EROCHESTER | NY |
| 2014-08-15 | 585-485-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | EROCHESTER | NY |
| 2014-08-15 | 585-512-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2014-08-15 | 585-548-0XXX | 0000–0999 | Assigned | ONVOY, LLC- NY | 384C | BYRON | NY |
| 2014-08-15 | 585-757-8XXX | 8000–8999 | Assigned | ONVOY, LLC- NY | 384C | ELBA | NY |
| 2014-08-15 | 585-948-0XXX | 0000–0999 | Assigned | ONVOY, LLC- NY | 384C | OAKFIELD | NY |
| 2014-08-12 | 585-438-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | AVON | NY |
| 2014-08-12 | 585-785-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ROCHESTER | NY |
| 2014-08-08 | 585-213-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | WAYLAND | NY |
| 2014-08-08 | 585-363-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2014-08-08 | 585-659-1XXX | 1000–1999 | Assigned | ONVOY, LLC- NY | 384C | KENDALL | NY |
| 2014-08-04 | 585-206-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | HOLLEY | NY |
| 2014-08-04 | 585-228-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | WARSAW | NY |
| 2014-08-04 | 585-294-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | CALEDONIA | NY |
| 2014-08-04 | 585-296-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | WELLSVILLE | NY |
| 2014-07-30 | 585-363-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ROCHESTER | NY |
| 2014-07-29 | 585-280-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | WEBSTER | NY |
| 2014-07-11 | 585-676-3XXX | 3000–3999 | Assigned | ONVOY, LLC- NY | 384C | FRANKLINVL | NY |
| 2014-07-08 | 585-485-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | EROCHESTER | NY |
| 2014-07-08 | 585-485-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | EROCHESTER | NY |
| 2014-06-25 | 585-471-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | 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.