NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 228
PAETEC ITEL, LLC 25
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
2022-03-16 228-286 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J BILOXI MS
2008-02-13 228-295 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J BILOXI MS
2005-04-26 228-707 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PEARLINGTN MS
2005-04-26 228-901 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J HURLEY MS
2005-01-14 228-456 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J BILOXI MS
2005-01-14 228-567 2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PASCAGOULA MS
2005-01-14 228-678 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → PAETEC ITEL, LLC 829J GULFPORT MS
2001-09-25 228-245 not yet reported which blocks → PAETEC ITEL, LLC 829J PASSCHRSTN MS
2001-09-07 228-246 not yet reported which blocks → PAETEC ITEL, LLC 829J MOSS POINT MS
2001-05-10 228-244 not yet reported which blocks → PAETEC ITEL, LLC 829J OCEAN SPG MS
2001-05-02 228-236 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J GULFPORT MS
2001-02-27 228-233 0XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J BILOXI MS
— 228-230 not yet reported which blocks → PAETEC ITEL, LLC 829J OCEAN SPG MS
— 228-252 2XXX3XXX4XXX5XXX6XXX8XXX which blocks → PAETEC ITEL, LLC 829J BAYSTLOUIS MS
— 228-282 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J OCEAN SPG MS
— 228-312 not yet reported which blocks → PAETEC ITEL, LLC 829J PASCAGOULA MS
— 228-349 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J BILOXI MS
— 228-407 1XXX2XXX3XXX4XXX6XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PASCAGOULA MS
— 228-460 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → PAETEC ITEL, LLC 829J MOSS POINT MS
— 228-546 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J BILOXI MS
— 228-549 0XXX3XXX5XXX6XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PASCAGOULA MS
— 228-679 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J GULFPORT MS
— 228-701 not yet reported which blocks → PAETEC ITEL, LLC 829J GULFPORT MS
— 228-702 not yet reported which blocks → PAETEC ITEL, LLC 829J BILOXI MS
— 228-797 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J BAYSTLOUIS MS

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.