NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 248
PAETEC ITEL, LLC 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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2005-06-02 248-313 0–9 XXXall 10 · 8 holders which blocks → PAETEC ITEL, LLC 829J WALLEDLAKE MI
2005-05-31 248-773 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J NORTHVILLE MI
2005-03-14 248-556 0–9 XXXall 10 · 8 holders which blocks → PAETEC ITEL, LLC 829J ROYAL OAK MI
2003-10-01 248-200 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J SOUTHFIELD MI
— 248-220 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J BIRMINGHAM MI
— 248-254 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J W BLOOMFLD MI
— 248-290 6XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J BIRMINGHAM MI
— 248-298 6XXX9XXX which blocks → PAETEC ITEL, LLC 829J ROYAL OAK MI
— 248-306 1XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J FARMINGTON MI
— 248-326 4XXX5XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PONTIAC MI
— 248-383 3XXX5XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J DRAYTON PL MI
— 248-384 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX which blocks → PAETEC ITEL, LLC 829J CLARKSTON MI
— 248-387 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J COMMERCE MI
— 248-402 3XXX which blocks → PAETEC ITEL, LLC 829J ROCHESTER MI
— 248-406 4XXX6XXX7XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J W BLOOMFLD MI
— 248-409 8XXX which blocks → PAETEC ITEL, LLC 829J PONTIAC MI
— 248-418 1XXX4XXX6XXX7XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J PONTIAC MI
— 248-422 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J TROY MI
— 248-428 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks → PAETEC ITEL, LLC 829J MILFDWH LK MI
— 248-429 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J OXFORD MI
— 248-440 7XXX which blocks → PAETEC ITEL, LLC 829J SOUTHFIELD MI
— 248-468 1XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J NORTHVILLE MI
— 248-487 1XXX6XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J W BLOOMFLD MI
— 248-519 3XXX6XXX7XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J TROY MI
— 248-530 not yet reported which blocks → PAETEC ITEL, LLC 829J BIRMINGHAM MI
— 248-531 8XXX which blocks → PAETEC ITEL, LLC 829J HOLLY MI
— 248-536 2XXX which blocks → PAETEC ITEL, LLC 829J FARMINGTON MI
— 248-537 2XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J AUBURN HTS MI
— 248-560 5XXX6XXX7XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WALLEDLAKE MI
— 248-587 3XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J SOUTH LYON MI
— 248-609 1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ROCHESTER MI
— 248-658 8XXX which blocks → PAETEC ITEL, LLC 829J ROYAL OAK MI
— 248-662 5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NORTHVILLE MI
— 248-663 not yet reported which blocks → PAETEC ITEL, LLC 829J SOUTHFIELD MI
— 248-665 1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J SOUTHFIELD MI
— 248-678 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J AUBURN HTS MI
— 248-690 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J LAKE ORION MI
— 248-720 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J TROY MI
— 248-871 7XXX which blocks → PAETEC ITEL, LLC 829J FARMINGTON MI
— 248-955 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J ROYAL OAK MI
— 248-956 0XXX1XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WALLEDLAKE MI
— 248-962 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J NORTHVILLE MI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.