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
— 508-894 7XXX which blocks → VERIZON NEW ENGLAND INC. 9102 BROCKTON MA
— 508-895 5XXX which blocks → VERIZON NEW ENGLAND INC. 9102 BROCKTON MA
— 508-896 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 BREWSTER MA
— 508-897 7XXX9XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 BROCKTON MA
— 508-898 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WESTBORO MA
— 508-899 not yet reported which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E AUBURN MA
— 508-900 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
— 508-901 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J NANTUCKET MA
— 508-902 6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J MILFORD MA
— 508-903 0XXX3XXX7XXX8XXX · 2 holders which blocks → TC SYSTEMS, INC. 7135 NATICK MA
— 508-904 not yet reported which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FRAMINGHAM MA
— 508-905 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MA 892D WELLFLEET MA
— 508-906 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MEDFIELD MA
— 508-907 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J NATICK MA
— 508-908 not yet reported which blocks → MA
— 508-909 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J SOUTHBDG MA
— 508-910 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 NEWBEDFORD MA
— 508-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 508-912 not yet reported which blocks → MA
— 508-913 not yet reported which blocks → MA
— 508-914 not yet reported which blocks → MA
— 508-915 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SOUTHGATE MA
— 508-916 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 FALL RIVER MA
— 508-917 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MILLBURY MA
— 508-919 5XXX6XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NORTHBORO MA
— 508-920 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
— 508-921 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WALPOLE MA
— 508-922 none assigned yet which blocks → METROPCS, INC. 5562 HOPKINTON MA
— 508-923 7XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 MIDDLEBORO MA
— 508-924 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J EBRIDGEWTR MA
— 508-925 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TC SYSTEMS, INC. 7135 SHREWSBURY MA
— 508-926 7XXX8XXX9XXX · 3 holders which blocks → TC SYSTEMS, INC. 7135 WORCESTER MA
— 508-927 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TC SYSTEMS, INC. 7135 PLYMOUTH MA
— 508-928 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J BLACKSTONE MA
— 508-929 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-930 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROCKTON MA
— 508-931 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
— 508-932 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BEVERLY MA
— 508-934 0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 DOVER MA
— 508-935 2XXX which blocks → VERIZON NEW ENGLAND INC. 9102 FRAMINGHAM MA
— 508-936 1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NORTHBORO MA
— 508-937 not yet reported which blocks → PAETEC ITEL, LLC 829J BELLINGHAM MA
— 508-938 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WESTPORT MA
— 508-939 0XXX1XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → VERIZON NEW ENGLAND INC. 9102 EDGARTOWN MA
— 508-940 not yet reported which blocks → MA
— 508-941 4XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 BROCKTON MA
— 508-942 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROCKTON MA
— 508-943 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WEBSTER MA
— 508-944 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROCKTON MA
— 508-945 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 CHATHAM 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.