NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
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
— 413-420 3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J HOLYOKE MA
— 413-424 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 MONROE BDG MA
— 413-425 3XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J HOLYOKE MA
— 413-426 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → VERIZON NEW ENGLAND INC. 9102 SPRINGFLD MA
— 413-427 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HOLYOKE MA
— 413-429 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TC SYSTEMS, INC. 7135 GREATBNGTN MA
— 413-430 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 732J HOLYOKE MA
— 413-431 not yet reported which blocks → PAETEC ITEL, LLC 829J LUDLOW MA
— 413-433 not yet reported which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 SPRINGFLD MA
— 413-436 2XXX6XXX8XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 WARREN MA
— 413-437 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J HOLYOKE MA
— 413-439 3XXX5XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J SPRINGFLD MA
— 413-441 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 PITTSFIELD MA
— 413-442 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 PITTSFIELD MA
— 413-443 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 PITTSFIELD MA
— 413-444 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - MA 892D BERNARDSTN MA
— 413-445 1XXX which blocks → VERIZON NEW ENGLAND INC. 9102 PITTSFIELD MA
— 413-446 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PITTSFIELD MA
— 413-447 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 PITTSFIELD MA
— 413-448 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 PITTSFIELD MA
— 413-449 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TC SYSTEMS, INC. 7135 PITTSFIELD MA
— 413-451 not yet reported which blocks → PAETEC ITEL, LLC 829J LONGMEADOW MA
— 413-452 8XXX which blocks → VERIZON NEW ENGLAND INC. 9102 SPRINGFLD MA
— 413-453 1XXX6XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E SO DEERFLD MA
— 413-454 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WESTFIELD MA
— 413-458 6XXX which blocks → VERIZON NEW ENGLAND INC. 9102 WILLIAMSTN MA
— 413-459 1XXX3XXX5XXX6XXX7XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CHICOPEE MA
— 413-460 not yet reported which blocks → PAETEC ITEL, LLC 829J BELCHERTN MA
— 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

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.