NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 — NPA 508
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 1
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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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 508-791 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-792 8XXX which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-793 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-794 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J MILLIS MA
— 508-795 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-796 3XXX5XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WORCESTER MA
— 508-797 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-798 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-799 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-800 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WALPOLE MA
— 508-801 none assigned yet which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 WALPOLE MA
— 508-802 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J TAUNTON MA
— 508-803 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FRANKLIN MA
— 508-804 5XXX6XXX7XXX · 2 holders which blocks → TC SYSTEMS, INC. 7135 MARLBORO MA
— 508-805 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 ATTLEBORO MA
— 508-806 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 AUBURN MA
— 508-807 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J BRIDGEWTR MA
— 508-808 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX which blocks → TC SYSTEMS, INC. 7135 FRAMINGHAM MA
— 508-809 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J NO ATTLEBO MA
— 508-810 2XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NATICK MA
— 508-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 508-813 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TAUNTON MA
— 508-814 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-815 0–9 XXXall 10 · 6 holders which blocks → RCN TELECOM SERVICES, INC. - MA 7619 HYANNIS MA
— 508-816 none assigned yet which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FRAMINGHAM MA
— 508-817 0XXX2XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWBEDFORD MA
— 508-818 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J BROCKTON MA
— 508-819 2XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J BRIDGEWTR MA
— 508-820 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 FRAMINGHAM MA
— 508-821 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 TAUNTON MA
— 508-822 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 TAUNTON MA
— 508-823 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 TAUNTON MA
— 508-824 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 TAUNTON MA
— 508-825 3XXX4XXX5XXX6XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 NANTUCKET MA
— 508-826 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WORCESTER MA
— 508-827 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TC SYSTEMS, INC. 7135 HYANNIS MA
— 508-828 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 TAUNTON MA
— 508-829 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HOLDEN MA
— 508-830 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 PLYMOUTH MA
— 508-831 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-832 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 AUBURN MA
— 508-833 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 SAGAMORE MA
— 508-834 0XXX2XXX5XXX6XXX7XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E FRAMINGHAM MA
— 508-835 0XXX8XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 W BOYLSTON MA
— 508-836 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WESTBORO MA
— 508-837 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J FALL RIVER MA
— 508-838 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → TC SYSTEMS, INC. 7135 ATTLEBORO MA
— 508-839 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 GRAFTON MA
— 508-841 2XXX3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 SHREWSBURY MA
— 508-842 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 SHREWSBURY MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.