NumberResearch Membership · Data 10/01/2026

Recent prefix assignments

374 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 10/01/2026

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 Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 508-688 0XXX1XXX2XXX4XXX5XXX7XXX9XXX which blocks → TC SYSTEMS, INC. 7135 WORCESTER MA
— 508-689 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TC SYSTEMS, INC. 7135 FALL RIVER MA
— 508-690 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW ENGLAND INC. 9102 EBRIDGEWTR MA
— 508-691 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NORTHBORO MA
— 508-692 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 TAUNTON MA
— 508-693 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 VINEYRDHVN MA
— 508-694 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - MA 892D DENNIS MA
— 508-695 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 NO ATTLEBO MA
— 508-696 2XXX which blocks → VERIZON NEW ENGLAND INC. 9102 VINEYRDHVN MA
— 508-697 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 BRIDGEWTR MA
— 508-698 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 FOXBORO MA
— 508-699 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 NO ATTLEBO MA
— 508-700 not yet reported which blocks → MA
— 508-701 not yet reported which blocks → MA
— 508-702 not yet reported which blocks → MA
— 508-703 not yet reported which blocks → MA
— 508-704 not yet reported which blocks → MA
— 508-705 not yet reported which blocks → MA
— 508-706 not yet reported which blocks → MA
— 508-707 not yet reported which blocks → MA
— 508-708 not yet reported which blocks → MA
— 508-709 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NORTHBORO MA
— 508-710 not yet reported which blocks → MA
— 508-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 508-712 not yet reported which blocks → MA
— 508-713 1XXX2XXX3XXX5XXX7XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WORCESTER MA
— 508-714 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WHITINSVL MA
— 508-715 0XXX1XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 EBRIDGEWTR MA
— 508-716 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 NANTUCKET MA
— 508-717 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NEWBEDFORD MA
— 508-718 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FOXBORO MA
— 508-719 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J SHREWSBURY MA
— 508-720 2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NATICK MA
— 508-721 6XXX which blocks → VERIZON NEW ENGLAND INC. 9102 AUBURN MA
— 508-722 not yet reported which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E AUBURN MA
— 508-723 0XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-725 0XXX9XXX which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 WALPOLE MA
— 508-726 none assigned yet which blocks → METROPCS, INC. 5562 MARLBORO MA
— 508-727 not yet reported which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E AUBURN MA
— 508-728 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 ROCHESTER MA
— 508-729 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 AUBURN MA
— 508-730 6XXX which blocks → VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
— 508-732 2XXX which blocks → VERIZON NEW ENGLAND INC. 9102 PLYMOUTH MA
— 508-733 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FRAMINGHAM MA
— 508-735 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WORCESTER MA
— 508-737 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYANNIS MA
— 508-739 3XXX5XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FRAMINGHAM MA
— 508-740 none assigned yet which blocks → METROPCS, INC. 5562 FRAMINGHAM MA
— 508-741 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 BROCKTON MA
— 508-742 5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J NEWBEDFORD MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 10/01/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.