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 |
|---|---|---|---|---|---|---|---|
| 2015-07-01 | 585-446-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | W WEBSTER | NY |
| 2015-06-16 | 585-358-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HENRIETTA | NY |
| 2015-06-16 | 585-358-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HENRIETTA | NY |
| 2015-06-16 | 585-736-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2015-06-09 | 585-296-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF NEW YORK, LLC - NY | 155E | WELLSVILLE | NY |
| 2015-06-01 | 585-623-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2015-06-01 | 585-623-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2015-05-22 | 585-357-2XXX | 2000–2999 | Assigned | ONVOY, LLC- NY | 384C | ALBION | NY |
| 2015-05-22 | 585-357-3XXX | 3000–3999 | Assigned | ONVOY, LLC- NY | 384C | ALBION | NY |
| 2015-05-22 | 585-357-4XXX | 4000–4999 | Assigned | ONVOY, LLC- NY | 384C | ALBION | NY |
| 2015-05-22 | 585-386-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF NEW YORK, LLC - NY | 155E | ANGELICA | NY |
| 2015-05-22 | 585-684-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | HOLLEY | NY |
| 2015-05-15 | 585-207-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | FILLMORE | NY |
| 2015-05-15 | 585-364-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | FAIRPORT | NY |
| 2015-05-13 | 585-416-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WATERPORT | NY |
| 2015-05-13 | 585-437-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | RUSHFORD | NY |
| 2015-05-13 | 585-535-2XXX | 2000–2999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | VARYSBURG | NY |
| 2015-05-13 | 585-648-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WELLSVILLE | NY |
| 2015-05-12 | 585-206-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HOLLEY | NY |
| 2015-05-12 | 585-207-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | FILLMORE | NY |
| 2015-05-12 | 585-318-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MEDINA | NY |
| 2015-05-12 | 585-379-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | OLEAN | NY |
| 2015-05-12 | 585-547-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | DARIEN | NY |
| 2015-05-12 | 585-599-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CORFU | NY |
| 2015-05-12 | 585-659-0XXX | 0000–0999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | KENDALL | NY |
| 2015-05-12 | 585-676-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | FRANKLINVL | NY |
| 2015-05-12 | 585-714-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | EASTAURORA | NY |
| 2015-05-12 | 585-757-0XXX | 0000–0999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ELBA | NY |
| 2015-05-12 | 585-866-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MIDDLEPORT | NY |
| 2015-05-12 | 585-948-1XXX | 1000–1999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | OAKFIELD | NY |
| 2015-05-12 | 585-968-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CUBA | NY |
| 2015-05-12 | 585-973-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | FRIENDSHIP | NY |
| 2015-05-12 | 585-999-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | JAVA | NY |
| 2015-05-08 | 585-326-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | AKRON | NY |
| 2015-05-08 | 585-357-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ALBION | NY |
| 2015-05-08 | 585-380-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BLISS | NY |
| 2015-05-08 | 585-386-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ANGELICA | NY |
| 2015-05-08 | 585-449-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BELMONT | NY |
| 2015-05-08 | 585-524-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BATAVIA | NY |
| 2015-05-08 | 585-548-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BYRON | NY |
| 2015-05-08 | 585-628-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BELFAST | NY |
| 2015-05-08 | 585-653-4XXX | 4000–4999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ARCADE | NY |
| 2015-05-08 | 585-656-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ATTICA | NY |
| 2015-05-08 | 585-667-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | WEBSTER | NY |
| 2015-05-08 | 585-800-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BOLIVAR | NY |
| 2015-05-08 | 585-900-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CHAFFEE | NY |
| 2015-05-08 | 585-902-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ALDEN | NY |
| 2015-04-23 | 585-358-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | HENRIETTA | NY |
| 2015-04-07 | 585-673-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | EROCHESTER | NY |
| 2015-04-02 | 585-491-6XXX | 6000–6999 | 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.