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 |
|---|---|---|---|---|---|---|---|
| 2004-08-24 | 585-319-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-08-24 | 585-319-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-08-24 | 585-319-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-08-24 | 585-319-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-08-24 | 585-319-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-08-24 | 585-319-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-08-20 | 585-413-9XXX | 9000–9999 | Assigned | FRONTIER TELEPHONE OF ROCHESTER, INC. | 0121 | ROCHESTER | NY |
| 2004-08-18 | 585-319-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ROCHESTER | NY |
| 2004-08-18 | 585-319-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ROCHESTER | NY |
| 2004-08-18 | 585-319-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ROCHESTER | NY |
| 2004-08-10 | 585-219-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | BATAVIA | NY |
| 2004-08-05 | 585-313-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2004-08-03 | 585-301-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2004-07-29 | 585-200-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | EROCHESTER | NY |
| 2004-07-26 | 585-297-1XXX | 1000–1999 | Assigned | VERIZON NEW YORK, INC. | 9104 | BATAVIA | NY |
| 2004-07-16 | 585-472-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2004-07-16 | 585-472-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2004-07-16 | 585-472-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2004-07-08 | 585-472-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2004-07-08 | 585-472-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2004-06-29 | 585-472-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-06-29 | 585-472-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-06-29 | 585-472-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-06-29 | 585-617-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | SPENCERPT | NY |
| 2004-06-25 | 585-269-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2004-06-25 | 585-298-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2004-06-25 | 585-486-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | HENRIETTA | NY |
| 2004-06-25 | 585-486-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | HENRIETTA | NY |
| 2004-06-25 | 585-486-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | HENRIETTA | NY |
| 2004-06-25 | 585-486-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | HENRIETTA | NY |
| 2004-06-25 | 585-486-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | HENRIETTA | NY |
| 2004-06-24 | 585-457-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | JAVA | NY |
| 2004-06-24 | 585-638-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | HOLLEY | NY |
| 2004-06-24 | 585-682-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | WATERPORT | NY |
| 2004-06-24 | 585-735-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | MIDDLEPORT | NY |
| 2004-06-24 | 585-765-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | LYNDONVL | NY |
| 2004-06-17 | 585-492-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ARCADE | NY |
| 2004-06-17 | 585-542-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | AKRON | NY |
| 2004-06-17 | 585-591-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ATTICA | NY |
| 2004-06-17 | 585-687-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | EASTAURORA | NY |
| 2004-06-17 | 585-902-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ALDEN | NY |
| 2004-06-17 | 585-928-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BOLIVAR | NY |
| 2004-06-17 | 585-968-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | CUBA | NY |
| 2004-06-16 | 585-298-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-06-16 | 585-298-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-06-16 | 585-298-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-06-16 | 585-298-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-06-16 | 585-298-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-06-15 | 585-298-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NY |
| 2004-06-15 | 585-298-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | 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.