NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

0 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, all time — NPA 269
FRONTIER NORTH, INC. - MI 42
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2001-12-18 269-707 6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - MI 0695 VANDALIA MI
— 269-244 0XXX3XXX4XXX6XXX7XXX · 5 holders which blocks → FRONTIER NORTH, INC. - MI 0695 THREERIVRS MI
— 269-273 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 THREERIVRS MI
— 269-278 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 THREERIVRS MI
— 269-279 4XXX which blocks → FRONTIER NORTH, INC. - MI 0695 THREERIVRS MI
— 269-367 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRONTIER NORTH, INC. - MI 0695 WOODLAND MI
— 269-423 1XXX2XXX3XXX5XXX · 4 holders which blocks → FRONTIER NORTH, INC. - MI 0695 DECATUR MI
— 269-424 0XXX1XXX2XXX4XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC. - MI 0695 SISTER LKS MI
— 269-427 3XXX4XXX · 2 holders which blocks → FRONTIER NORTH, INC. - MI 0695 BANGOR MI
— 269-432 0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks → FRONTIER NORTH, INC. - MI 0695 COLON MI
— 269-434 0XXX1XXX3XXX4XXX7XXX · 5 holders which blocks → FRONTIER NORTH, INC. - MI 0695 GRAND JCT MI
— 269-435 0XXX1XXX · 2 holders which blocks → FRONTIER NORTH, INC. - MI 0695 CONSTANTIN MI
— 269-445 7XXX which blocks → FRONTIER NORTH, INC. - MI 0695 CASSOPOLIS MI
— 269-467 0XXX2XXX3XXX · 2 holders which blocks → FRONTIER NORTH, INC. - MI 0695 CENTREVL MI
— 269-476 0XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → FRONTIER NORTH, INC. - MI 0695 VANDALIA MI
— 269-483 4XXX5XXX6XXX · 3 holders which blocks → FRONTIER NORTH, INC. - MI 0695 WH PIGEON MI
— 269-489 1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRONTIER NORTH, INC. - MI 0695 BURR OAK MI
— 269-496 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 6 holders which blocks → FRONTIER NORTH, INC. - MI 0695 MENDON MI
— 269-543 1XXX2XXX5XXX7XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - MI 0695 GANGES MI
— 269-561 0XXX1XXX3XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - MI 0695 FENNVILLE MI
— 269-621 5XXX8XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - MI 0695 HARTFORD MI
— 269-624 0XXX8XXX · 2 holders which blocks → FRONTIER NORTH, INC. - MI 0695 LAWTON MI
— 269-628 3XXX8XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - MI 0695 GOBLES MI
— 269-637 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 SOUTHHAVEN MI
— 269-639 5XXX which blocks → FRONTIER NORTH, INC. - MI 0695 SOUTHHAVEN MI
— 269-641 0XXX1XXX4XXX6XXX8XXX · 5 holders which blocks → FRONTIER NORTH, INC. - MI 0695 UNION MI
— 269-646 none assigned yet which blocks → FRONTIER NORTH, INC. - MI 0695 MARCELLUS MI
— 269-651 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 STURGIS MI
— 269-655 4XXX5XXX6XXX7XXX which blocks → FRONTIER NORTH, INC. - MI 0695 PAW PAW MI
— 269-657 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 PAW PAW MI
— 269-659 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 STURGIS MI
— 269-663 4XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - MI 0695 EDWARDSBG MI
— 269-668 0XXX1XXX · 2 holders which blocks → FRONTIER NORTH, INC. - MI 0695 MATTAWAN MI
— 269-673 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 ALLEGAN MI
— 269-679 0XXX1XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - MI 0695 SCHOOLCFT MI
— 269-686 6XXX which blocks → FRONTIER NORTH, INC. - MI 0695 ALLEGAN MI
— 269-699 0XXX1XXX2XXX3XXX4XXX · 4 holders which blocks → FRONTIER NORTH, INC. - MI 0695 EDWARDSBG MI
— 269-751 0XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - MI 0695 HAMILTON MI
— 269-764 5XXX6XXX7XXX · 3 holders which blocks → FRONTIER NORTH, INC. - MI 0695 COVERT MI
— 269-782 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 DOWAGIAC MI
— 269-783 4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - MI 0695 DOWAGIAC MI
— 269-857 0XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - MI 0695 SAUGATUCK MI

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.