NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 413-461 1XXX3XXX5XXX6XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 AMHERST MA
— 413-467 not yet reported which blocks → GRANBY TELEPHONE LLC 0036 GRANBY MA
— 413-470 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
— 413-471 3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CHESTERFLD MA
— 413-473 not yet reported which blocks → PAETEC ITEL, LLC 829J NORTHADAMS MA
— 413-474 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J CHICOPEE MA
— 413-475 0–9 XXXall 10 · 7 holders which blocks → TC SYSTEMS, INC. 7135 GREENFIELD MA
— 413-477 1XXX4XXX5XXX7XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 GILBERTVL MA
— 413-478 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SPRINGFLD MA
— 413-480 not yet reported which blocks → PAETEC ITEL, LLC 829J WESTFIELD MA
— 413-485 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WESTFIELD MA
— 413-486 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J ELONGMEDOW MA
— 413-487 not yet reported which blocks → PAETEC ITEL, LLC 829J WARREN MA
— 413-493 5XXX6XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 HOLYOKE MA
— 413-494 0XXX1XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 PITTSFIELD MA
— 413-495 1XXX2XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J SPRINGFLD MA
— 413-496 1XXX3XXX4XXX5XXX7XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 PITTSFIELD MA
— 413-498 1XXX which blocks → VERIZON NEW ENGLAND INC. 9102 NORTHFIELD MA
— 413-499 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 PITTSFIELD MA
— 413-500 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - MA 892D MONROE BDG MA
— 413-502 not yet reported which blocks → PAETEC ITEL, LLC 829J WILLIAMSBG MA
— 413-504 2XXX3XXX8XXX9XXX · 2 holders which blocks → TC SYSTEMS, INC. 7135 SPRINGFLD MA
— 413-508 not yet reported which blocks → MA
— 413-509 0XXX2XXX4XXX5XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WILBRAHAM MA
— 413-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 413-512 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J GREENFIELD MA
— 413-513 not yet reported which blocks → PAETEC ITEL, LLC 829J WILBRAHAM MA
— 413-517 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NORTHAMPTN MA
— 413-518 not yet reported which blocks → MA
— 413-519 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SPRINGFLD MA
— 413-521 not yet reported which blocks → PAETEC ITEL, LLC 829J BRIMFIELD MA
— 413-522 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GREENFIELD MA
— 413-523 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J SPRINGFLD MA
— 413-525 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 ELONGMEDOW MA
— 413-526 0XXX3XXX6XXX7XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 ELONGMEDOW MA
— 413-527 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 EASTHAMPTN MA
— 413-528 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 GREATBNGTN MA
— 413-529 4XXX5XXX6XXX8XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 EASTHAMPTN MA
— 413-530 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HOLYOKE MA
— 413-531 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HOLYOKE MA
— 413-532 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HOLYOKE MA
— 413-533 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HOLYOKE MA
— 413-534 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HOLYOKE MA
— 413-535 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 HOLYOKE MA
— 413-536 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HOLYOKE MA
— 413-537 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HOLYOKE MA
— 413-538 4XXX which blocks → VERIZON NEW ENGLAND INC. 9102 HOLYOKE MA
— 413-539 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 HOLYOKE MA
— 413-540 6XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 HOLYOKE MA
— 413-541 3XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J GREATBNGTN 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.