NumberResearchRecent prefix assignments
355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
Most active assignees, last 30 days
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| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 914-594 | 0XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | VERIZON NEW YORK, INC. | 9104 | WSCHSTZN07 | NY |
| — | 914-595 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | WSCHSTZN01 | NY |
| — | 914-596 | not yet reported which blocks → | ZCALL.COM, INC. | 0059 | WSCHSTZN08 | NY |
| — | 914-597 | 0XXX1XXX3XXX7XXX9XXX · 3 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | WSCHSTZN08 | NY |
| — | 914-598 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | WSCHSTZN07 | NY |
| — | 914-600 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BIRCHWOOD | NY |
| — | 914-602 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | MOUNTKISCO | NY |
| — | 914-603 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | LAKELAND | NY |
| — | 914-605 | not yet reported which blocks → | AMERICAN NETWORK, INC. | 8667 | WSCHSTZN08 | NY |
| — | 914-606 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | WSCHSTZN07 | NY |
| — | 914-607 | 0–9 XXXall 10 · 5 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | WSCHSTZN08 | NY |
| — | 914-609 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | TC SYSTEMS, INC. - NY | 7140 | WSCHSTZN08 | NY |
| — | 914-610 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | WSCHSTZN07 | NY |
| — | 914-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | NY |
| — | 914-612 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | WSCHSTZN09 | NY |
| — | 914-613 | 3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WSCHSTZN01 | NY |
| — | 914-614 | 3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSCHSTZN08 | NY |
| — | 914-617 | 1XXX2XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | CROTON FLS | NY |
| — | 914-618 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | WSCHSTZN08 | NY |
| — | 914-619 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | WSCHSTZN01 | NY |
| — | 914-621 | 1XXX2XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | VERIZON NEW YORK, INC. | 9104 | MAHOPAC | NY |
| — | 914-625 | 0XXX2XXX which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | WSCHSTZN08 | NY |
| — | 914-628 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | VERIZON NEW YORK, INC. | 9104 | MAHOPAC | NY |
| — | 914-629 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | WSCHSTZN06 | NY |
| — | 914-630 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | AT&T - LOCAL | 7421 | WSCHSTZN06 | NY |
| — | 914-631 | not yet reported which blocks → | VERIZON NEW YORK, INC. | 9104 | WSCHSTZN07 | NY |
| — | 914-632 | not yet reported which blocks → | VERIZON NEW YORK, INC. | 9104 | WSCHSTZN03 | NY |
| — | 914-633 | not yet reported which blocks → | VERIZON NEW YORK, INC. | 9104 | WSCHSTZN03 | NY |
| — | 914-636 | 9XXX which blocks → | VERIZON NEW YORK, INC. | 9104 | WSCHSTZN03 | NY |
| — | 914-637 | not yet reported which blocks → | VERIZON NEW YORK, INC. | 9104 | WSCHSTZN03 | NY |
| — | 914-640 | 0XXX5XXX9XXX · 2 holders which blocks → | VERIZON NEW YORK, INC. | 9104 | WSCHSTZN08 | NY |
| — | 914-641 | 0XXX1XXX which blocks → | VERIZON NEW YORK, INC. | 9104 | WSCHSTZN08 | NY |
| — | 914-642 | 3XXX4XXX5XXX6XXX which blocks → | VERIZON NEW YORK, INC. | 9104 | WSCHSTZN08 | NY |
| — | 914-643 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSCHSTZN08 | NY |
| — | 914-644 | 0XXX2XXX which blocks → | VERIZON NEW YORK, INC. | 9104 | WSCHSTZN08 | NY |
| — | 914-645 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSCHSTZN08 | NY |
| — | 914-646 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSCHSTZN08 | NY |
| — | 914-649 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSCHSTZN08 | NY |
| — | 914-652 | 0XXX1XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WSCHSTZN02 | NY |
| — | 914-653 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | WSCHSTZN09 | NY |
| — | 914-654 | not yet reported which blocks → | VERIZON NEW YORK, INC. | 9104 | WSCHSTZN03 | NY |
| — | 914-656 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSCHSTZN08 | NY |
| — | 914-659 | 2XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSCHSTZN08 | NY |
| — | 914-660 | not yet reported which blocks → | VERIZON NEW YORK, INC. | 9104 | XXXXXXXXXX | NY |
| — | 914-661 | none assigned yet which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | NYACK | NY |
| — | 914-662 | 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | VERIZON NEW YORK, INC. | 9104 | MT VERNON | NY |
| — | 914-663 | 3XXX5XXX · 2 holders which blocks → | VERIZON NEW YORK, INC. | 9104 | MT VERNON | NY |
| — | 914-664 | not yet reported which blocks → | VERIZON NEW YORK, INC. | 9104 | MT VERNON | NY |
| — | 914-665 | not yet reported which blocks → | VERIZON NEW YORK, INC. | 9104 | MT VERNON | NY |
| — | 914-666 | not yet reported which blocks → | VERIZON NEW YORK, INC. | 9104 | MOUNTKISCO | NY |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.