NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
— 856-837 not yet reported which blocks → AQUIS COMMUNICATIONS, INC. 6919 WILLIAMSTN NJ
— 856-840 3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW JERSEY, INC. 9206 MOORESTOWN NJ
— 856-842 2XXX3XXX4XXX6XXX7XXX8XXX9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 7134 BLACKWOOD NJ
— 856-843 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F HADDONFLD NJ
— 856-845 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 WOODBURY NJ
— 856-848 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 WOODBURY NJ
— 856-851 2XXX which blocks → PAETEC ITEL, LLC 829J PENNSGROVE NJ
— 856-853 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 WOODBURY NJ
— 856-854 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 COLLINGSWD NJ
— 856-855 not yet reported which blocks → SPOK, INC. 6630 HADDONFLD NJ
— 856-857 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 HADDONFLD NJ
— 856-858 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 COLLINGSWD NJ
— 856-861 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J BEAVER BRK NJ
— 856-863 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 GLASSBORO NJ
— 856-864 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 7134 RIVERTON NJ
— 856-866 6XXX which blocks → VERIZON NEW JERSEY, INC. 9206 MOORESTOWN NJ
— 856-869 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 COLLINGSWD NJ
— 856-870 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 CAMDEN NJ
— 856-873 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 HADDONFLD NJ
— 856-874 3XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW JERSEY, INC. 9206 HADDONFLD NJ
— 856-875 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 WILLIAMSTN NJ
— 856-878 2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW JERSEY, INC. 9206 SALEM NJ
— 856-879 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 7134 WOODBURY NJ
— 856-881 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 GLASSBORO NJ
— 856-882 0XXX2XXX3XXX4XXX6XXX8XXX9XXX · 3 holders which blocks → NETCARRIER TELECOM, INC. - NJ 9003 LAUREL SPG NJ
— 856-885 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 WILLIAMSTN NJ
— 856-887 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J SALEM NJ
— 856-890 0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks → NETCARRIER TELECOM, INC. - NJ 9003 MARLTON NJ
— 856-895 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J PENNSGROVE NJ
— 856-896 1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J VINELAND NJ
— 856-901 not yet reported which blocks → SPOK, INC. 6630 HADDONFLD NJ
— 856-903 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → NETCARRIER TELECOM, INC. - NJ 9003 MERCHANTVL NJ
— 856-904 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HADDONFLD NJ
— 856-905 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HADDONFLD NJ
— 856-906 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HADDONFLD NJ
— 856-910 3XXX5XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 MERCHANTVL NJ
— 856-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NJ
— 856-912 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 MOORESTOWN NJ
— 856-914 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 MOORESTOWN NJ
— 856-916 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW JERSEY, INC. 9206 CAMDEN NJ
— 856-917 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 MOORESTOWN NJ
— 856-924 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NETCARRIER TELECOM, INC. - NJ 9003 MOORESTOWN NJ
— 856-931 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 BEAVER BRK NJ
— 856-933 6XXX which blocks → VERIZON NEW JERSEY, INC. 9206 BEAVER BRK NJ
— 856-935 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 SALEM NJ
— 856-938 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J HADDONFLD NJ
— 856-939 7XXX which blocks → VERIZON NEW JERSEY, INC. 9206 BEAVER BRK NJ
— 856-942 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 COLLINGSWD NJ
— 856-946 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 7134 COLLINGSWD NJ
— 856-950 not yet reported which blocks → NJ

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.