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 812
FRONTIER NORTH, INC. - IN 102
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
— 812-678 0XXX1XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 DUBOIS IN
— 812-683 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 HUNTINGBG IN
— 812-689 9XXX which blocks → FRONTIER NORTH, INC. - IN 0779 VERSAILLES IN
— 812-695 0XXX1XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 HAYSVILLE IN
— 812-696 6XXX7XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FARMERSBG IN
— 812-721 0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC. - IN 0779 SPURGEON IN
— 812-723 6XXX8XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 PAOLI IN
— 812-724 0XXX7XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 OWENSVILLE IN
— 812-726 0XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FRITCHTON IN
— 812-729 0XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 OWENSVILLE IN
— 812-732 0XXX2XXX3XXX6XXX7XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 CENTRAL IN
— 812-734 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 CORYDON IN
— 812-735 1XXX6XXX7XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 BICKNELL IN
— 812-737 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC. - IN 0779 LACONIA IN
— 812-738 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 CORYDON IN
— 812-739 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 LEAVENWTH IN
— 812-743 3XXX7XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 MONROECITY IN
— 812-745 5XXX which blocks → FRONTIER NORTH, INC. - IN 0779 OAKTOWN IN
— 812-749 2XXX5XXX7XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 OAKLAND CY IN
— 812-752 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 SCOTTSBURG IN
— 812-753 none assigned yet which blocks → FRONTIER NORTH, INC. - IN 0779 FORTBRANCH IN
— 812-754 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 SCOTTSBURG IN
— 812-755 0XXX2XXX3XXX6XXX8XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 CAMPBELSBG IN
— 812-768 3XXX8XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FORTBRANCH IN
— 812-769 0XXX1XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 DECKER IN
— 812-779 0XXX1XXX4XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 PATOKA IN
— 812-782 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FRANCISCO IN
— 812-784 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 HAZLETON IN
— 812-789 4XXX7XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 PETERSBURG IN
— 812-793 0XXX4XXX5XXX7XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 CROTHERSVL IN
— 812-794 5XXX7XXX which blocks → FRONTIER NORTH, INC. - IN 0779 AUSTIN IN
— 812-795 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC. - IN 0779 MACKEY IN
— 812-845 5XXX which blocks → FRONTIER NORTH, INC. - IN 0779 CYNTHIANA IN
— 812-849 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 MITCHELL IN
— 812-854 9XXX which blocks → FRONTIER NORTH, INC. - IN 0779 CRANE IN
— 812-865 0XXX5XXX6XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 ORLEANS IN
— 812-866 0XXX which blocks → FRONTIER NORTH, INC. - IN 0779 HANOVER IN
— 812-875 5XXX6XXX which blocks → FRONTIER NORTH, INC. - IN 0779 WORTHINGTN IN
— 812-883 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 SALEM IN
— 812-889 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC. - IN 0779 LEXINGTON IN
— 812-896 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 SALEM IN
— 812-922 2XXX4XXX6XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 LYNNVILLE IN
— 812-931 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 BATESVILLE IN
— 812-933 2XXX4XXX7XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 BATESVILLE IN
— 812-934 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 BATESVILLE IN
— 812-951 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 GEORGETOWN IN
— 812-952 4XXX5XXX6XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 LANESVILLE IN
— 812-966 1XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 MEDORA IN
— 812-968 1XXX2XXX6XXX7XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 NEWMIDDLTN IN
— 812-969 0XXX1XXX4XXX5XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 ELIZABETH IN

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.