Recent prefix assignments
375 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026
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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 413-735 | 3XXX7XXX · 2 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-736 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-737 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-738 | 9XXX which blocks → | TACONIC TEL. CORP. | 0084 | HANCOCK | MA |
| — | 413-739 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-740 | 3XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | CUMMINGTON | MA |
| — | 413-743 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | ADAMS | MA |
| — | 413-744 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-746 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-747 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-748 | 0XXX1XXX2XXX which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-749 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | ADAMS | MA |
| — | 413-750 | 6XXX8XXX9XXX · 3 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-751 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | MONTAGUE | MA |
| — | 413-752 | 1XXX3XXX5XXX6XXX8XXX · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - MA | 990E | BRIMFIELD | MA |
| — | 413-754 | 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | LONGMEADOW | MA |
| — | 413-755 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-758 | 1XXX3XXX5XXX6XXX8XXX · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - MA | 990E | WARE | MA |
| — | 413-768 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | GREENFIELD | MA |
| — | 413-770 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | PITTSFIELD | MA |
| — | 413-771 | 4XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | BLANDFORD | MA |
| — | 413-772 | none assigned yet which blocks → | VERIZON NEW ENGLAND INC. | 9102 | GREENFIELD | MA |
| — | 413-773 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | GREENFIELD | MA |
| — | 413-774 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | GREENFIELD | MA |
| — | 413-775 | 6XXX which blocks → | VERIZON NEW ENGLAND INC. | 9102 | GREENFIELD | MA |
| — | 413-776 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | ADAMS | MA |
| — | 413-778 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | WARE | MA |
| — | 413-781 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-782 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-783 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-784 | 3XXX5XXX8XXX · 2 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-785 | 8XXX9XXX which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-786 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-787 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-788 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-789 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-793 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | WORTHINGTN | MA |
| — | 413-794 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | SPRINGFLD | MA |
| — | 413-796 | 9XXX which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-798 | 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | LONGMEADOW | MA |
| — | 413-800 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - MA | 892D | AMHERST | MA |
| — | 413-802 | not yet reported which blocks → | MA | |||
| — | 413-803 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | WILLIAMSTN | MA |
| — | 413-811 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MA |
| — | 413-812 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | SHEFFIELD | MA |
| — | 413-813 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | WARE | MA |
| — | 413-814 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-821 | 3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SPRINGFLD | MA |
| — | 413-822 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | PITTSFIELD | MA |
| — | 413-824 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | GREENFIELD | MA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.