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 |
|---|---|---|---|---|---|---|---|
| 2009-10-01 | 585-456-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-09-28 | 585-625-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-09-28 | 585-625-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-09-28 | 585-625-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-09-28 | 585-625-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-09-28 | 585-625-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-09-22 | 585-479-7XXX | 7000–7999 | Assigned | YMAX COMMUNICATIONS CORP. - NY | 282E | BATAVIA | NY |
| 2009-09-22 | 585-479-8XXX | 8000–8999 | Assigned | YMAX COMMUNICATIONS CORP. - NY | 282E | BATAVIA | NY |
| 2009-09-22 | 585-861-1XXX | 1000–1999 | Assigned | YMAX COMMUNICATIONS CORP. - NY | 282E | BATAVIA | NY |
| 2009-09-22 | 585-861-9XXX | 9000–9999 | Assigned | YMAX COMMUNICATIONS CORP. - NY | 282E | BATAVIA | NY |
| 2009-09-17 | 585-672-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ROCHESTER | NY |
| 2009-09-02 | 585-545-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | WEBSTER | NY |
| 2009-09-02 | 585-857-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2009-08-06 | 585-203-3XXX | 3000–3999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | EROCHESTER | NY |
| 2009-08-05 | 585-205-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | MIDDLEPORT | NY |
| 2009-08-05 | 585-447-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | GENESEO | NY |
| 2009-08-05 | 585-694-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2009-08-05 | 585-831-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2009-08-05 | 585-953-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ROCHESTER | NY |
| 2009-08-03 | 585-400-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-400-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-400-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-400-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-400-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-400-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-400-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-400-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-400-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-400-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-600-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-600-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-600-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-600-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-600-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-600-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-600-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-600-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-600-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-08-03 | 585-600-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | ROCHESTER | NY |
| 2009-07-29 | 585-479-9XXX | 9000–9999 | Assigned | AT&T - LOCAL | 7421 | BATAVIA | NY |
| 2009-07-27 | 585-851-0XXX | 0000–0999 | Assigned | FINGER LAKES TECHNOLOGIES GROUP, INC. - NY | 629E | ROCHESTER | NY |
| 2009-07-10 | 585-666-4XXX | 4000–4999 | Assigned | FRONTIER TELEPHONE OF ROCHESTER, INC. | 0121 | ROCHESTER | NY |
| 2009-07-07 | 585-210-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | ROCHESTER | NY |
| 2009-07-07 | 585-210-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | ROCHESTER | NY |
| 2009-07-07 | 585-210-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | ROCHESTER | NY |
| 2009-07-07 | 585-831-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | ROCHESTER | NY |
| 2009-07-07 | 585-831-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | ROCHESTER | NY |
| 2009-07-07 | 585-831-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | ROCHESTER | NY |
| 2009-07-06 | 585-645-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | WEBSTER | NY |
| 2009-07-06 | 585-815-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BATAVIA | 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.