NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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
2012-08-29 812-713 0–9 XXXall 10 · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 CRANE IN
2002-07-12 812-953 0–9 XXXall 10 · 7 holders which blocks → FRONTIER NORTH, INC. - IN 0779 NO VERNON IN
2001-06-21 812-513 1XXX5XXX6XXX7XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 OAKTOWN IN
2001-05-07 812-310 1XXX3XXX4XXX5XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FARMERSBG IN
2001-05-07 812-313 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 HANOVER IN
2001-05-07 812-501 0–9 XXXall 10 · 2 holders which blocks → FRONTIER NORTH, INC. - IN 0779 GEORGETOWN IN
— 812-247 0XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 SHOALS IN
— 812-265 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 MADISON IN
— 812-273 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 MADISON IN
— 812-294 0XXX2XXX5XXX6XXX8XXX9XXX which blocks → FRONTIER NORTH, INC. - IN 0779 HENRYVILLE IN
— 812-295 0XXX which blocks → FRONTIER NORTH, INC. - IN 0779 LOOGOOTEE IN
— 812-321 0XXX3XXX4XXX6XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 WHEATLAND IN
— 812-326 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRONTIER NORTH, INC. - IN 0779 ST ANTHONY IN
— 812-328 4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FREELANDVL IN
— 812-338 0XXX1XXX5XXX7XXX8XXX · 5 holders which blocks → FRONTIER NORTH, INC. - IN 0779 ENGLISH IN
— 812-346 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 NO VERNON IN
— 812-347 4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRONTIER NORTH, INC. - IN 0779 RAMSEY IN
— 812-352 3XXX6XXX7XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 NO VERNON IN
— 812-354 none assigned yet which blocks → FRONTIER NORTH, INC. - IN 0779 PETERSBURG IN
— 812-356 0XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 MEROM IN
— 812-358 7XXX which blocks → FRONTIER NORTH, INC. - IN 0779 BROWNSTOWN IN
— 812-364 2XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC. - IN 0779 PALMYRA IN
— 812-365 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 MARENGO IN
— 812-366 0XXX1XXX2XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 CRANDALL IN
— 812-367 4XXX5XXX6XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FERDINAND IN
— 812-380 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRONTIER NORTH, INC. - IN 0779 PETERSBURG IN
— 812-385 none assigned yet which blocks → FRONTIER NORTH, INC. - IN 0779 PRINCETON IN
— 812-386 none assigned yet which blocks → FRONTIER NORTH, INC. - IN 0779 PRINCETON IN
— 812-387 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 PRINCETON IN
— 812-389 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 BIRDSEYE IN
— 812-392 1XXX4XXX5XXX8XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 SCIPIO IN
— 812-394 0XXX1XXX3XXX4XXX7XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FAIRBANKS IN
— 812-397 3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 SHELBURN IN
— 812-398 0XXX1XXX7XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 OAKTOWN IN
— 812-445 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - IN 0779 REDDINGTON IN
— 812-458 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 BUTLERVL IN
— 812-472 0XXX1XXX2XXX4XXX5XXX6XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FREDECKSBG IN
— 812-481 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 JASPER IN
— 812-482 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 JASPER IN
— 812-497 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FREETOWN IN
— 812-522 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 SEYMOUR IN
— 812-523 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 SEYMOUR IN
— 812-524 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 SEYMOUR IN
— 812-527 1XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 GREENSBURG IN
— 812-591 1XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 WESTPORT IN
— 812-633 0XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 MILLTOWN IN
— 812-634 8XXX which blocks → FRONTIER NORTH, INC. - IN 0779 JASPER IN
— 812-654 0XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - IN 0779 MILAN IN
— 812-662 none assigned yet which blocks → FRONTIER NORTH, INC. - IN 0779 GREENSBURG IN
— 812-663 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 GREENSBURG IN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.