Recent prefix assignments
347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026
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 |
|---|---|---|---|---|---|---|
| — | 413-604 | not yet reported which blocks → | ONVOY, LLC - MA | 892D | EASTHAMPTN | MA |
| — | 413-610 | 0XXX1XXX2XXX3XXX4XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | LUDLOW | MA |
| — | 413-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MA |
| — | 413-612 | 4XXX5XXX7XXX8XXX which blocks → | PAETEC ITEL, LLC | 829J | CHICOPEE | MA |
| — | 413-614 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | NORTHAMPTN | MA |
| — | 413-616 | 1XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | OTIS | MA |
| — | 413-617 | not yet reported which blocks → | MA | |||
| — | 413-618 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | CONWAY | MA |
| — | 413-622 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | GRANVILLE | MA |
| — | 413-623 | 1XXX3XXX4XXX7XXX9XXX · 4 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | BECKET | MA |
| — | 413-624 | 2XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | COLRAIN | MA |
| — | 413-625 | 1XXX3XXX4XXX5XXX7XXX · 5 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SHELBUNFLS | MA |
| — | 413-626 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SPRINGFLD | MA |
| — | 413-627 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SPRINGFLD | MA |
| — | 413-628 | 1XXX2XXX5XXX6XXX9XXX · 4 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | ASHFIELD | MA |
| — | 413-629 | 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | PITTSFIELD | MA |
| — | 413-631 | 1XXX4XXX6XXX which blocks → | TC SYSTEMS, INC. | 7135 | LUDLOW | MA |
| — | 413-634 | 1XXX3XXX4XXX6XXX7XXX · 5 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | CUMMINGTON | MA |
| — | 413-637 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | LENOX | MA |
| — | 413-638 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | HOUSATONIC | MA |
| — | 413-639 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | WESTFIELD | MA |
| — | 413-640 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | PALMER | MA |
| — | 413-641 | 8XXX which blocks → | PAETEC ITEL, LLC | 829J | GREENFIELD | MA |
| — | 413-643 | 3XXX which blocks → | PAETEC ITEL, LLC | 829J | GILBERTVL | MA |
| — | 413-644 | 5XXX6XXX7XXX · 2 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | GREATBNGTN | MA |
| — | 413-647 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | ELONGMEDOW | MA |
| — | 413-648 | 1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | BERNARDSTN | MA |
| — | 413-652 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | NORTHADAMS | MA |
| — | 413-653 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | HUNTINGTON | MA |
| — | 413-655 | 1XXX3XXX4XXX5XXX7XXX9XXX · 5 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | HINSDALE | MA |
| — | 413-658 | 3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | AMHERST | MA |
| — | 413-659 | 0XXX5XXX6XXX8XXX · 3 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | MILLERSFLS | MA |
| — | 413-662 | 7XXX8XXX9XXX · 3 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | NORTHADAMS | MA |
| — | 413-663 | 0XXX1XXX4XXX which blocks → | VERIZON NEW ENGLAND INC. | 9102 | NORTHADAMS | MA |
| — | 413-664 | 1XXX3XXX which blocks → | VERIZON NEW ENGLAND INC. | 9102 | NORTHADAMS | MA |
| — | 413-665 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SO DEERFLD | MA |
| — | 413-666 | 0–9 XXXall 10 · 7 holders which blocks → | ONVOY, LLC - MA | 892D | GRANVILLE | MA |
| — | 413-667 | 0XXX1XXX2XXX4XXX6XXX7XXX9XXX · 5 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | HUNTINGTON | MA |
| — | 413-668 | 4XXX5XXX6XXX7XXX8XXX which blocks → | PAETEC ITEL, LLC | 829J | PALMER | MA |
| — | 413-669 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | HINSDALE | MA |
| — | 413-672 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → | TC SYSTEMS, INC. | 7135 | NORTHADAMS | MA |
| — | 413-674 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | HATFIELD | MA |
| — | 413-675 | 2XXX3XXX5XXX7XXX which blocks → | PAETEC ITEL, LLC | 829J | WILBRAHAM | MA |
| — | 413-677 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | COLRAIN | MA |
| — | 413-678 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | XXXXXXXXXX | MA |
| — | 413-679 | 1XXX3XXX5XXX8XXX · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - MA | 990E | OTIS | MA |
| — | 413-682 | 4XXX5XXX6XXX which blocks → | PAETEC ITEL, LLC | 829J | WILBRAHAM | MA |
| — | 413-683 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | CHICOPEE | MA |
| — | 413-684 | 5XXX8XXX · 2 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | DALTON | MA |
| — | 413-685 | 1XXX3XXX5XXX6XXX8XXX · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | HUNTINGTON | MA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.