NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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, all time — NPA 610
VERIZON PENNSYLVANIA, INC. 325
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
— 610-792 6XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 ROYERSFORD PA
— 610-793 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 LENAPE PA
— 610-796 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 READING PA
— 610-797 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALLENTOWN PA
— 610-798 1XXX3XXX5XXX6XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALLENTOWN PA
— 610-807 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 BETHLEHEM PA
— 610-814 7XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 BETHLEHEM PA
— 610-820 1XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALLENTOWN PA
— 610-821 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALLENTOWN PA
— 610-825 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN31 PA
— 610-827 0XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 CHESTERSPG PA
— 610-828 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN31 PA
— 610-831 3XXX4XXX6XXX7XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 COLLEGEVL PA
— 610-832 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN31 PA
— 610-833 0XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN11 PA
— 610-834 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN31 PA
— 610-837 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 BATH PA
— 610-838 4XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 HELLERTOWN PA
— 610-846 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 XXXXXXXXXX PA
— 610-853 7XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN21 PA
— 610-857 6XXX7XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PARKESBURG PA
— 610-859 4XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN11 PA
— 610-861 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 BETHLEHEM PA
— 610-865 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 BETHLEHEM PA
— 610-866 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 BETHLEHEM PA
— 610-867 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 BETHLEHEM PA
— 610-868 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 BETHLEHEM PA
— 610-869 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 WEST GROVE PA
— 610-872 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN11 PA
— 610-873 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 DOWNINGTN PA
— 610-874 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN11 PA
— 610-876 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN11 PA
— 610-878 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN30 PA
— 610-882 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 BETHLEHEM PA
— 610-889 none assigned yet which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN28 PA
— 610-891 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN12 PA
— 610-892 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN12 PA
— 610-894 0XXX1XXX6XXX7XXX9XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 KUTZTOWN PA
— 610-896 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN24 PA
— 610-902 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN26 PA
— 610-917 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHOENIXVL PA
— 610-918 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 W CHESTER PA
— 610-921 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 READING PA
— 610-923 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 EASTON PA
— 610-924 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN21 PA
— 610-925 6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 KENNETT SQ PA
— 610-927 5XXX6XXX7XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 READING PA
— 610-929 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 READING PA
— 610-932 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 OXFORD PA
— 610-933 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHOENIXVL PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.