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 321
PAETEC ITEL, LLC 46
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
2010-02-09 321-500 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J ORLANDO FL
2005-12-28 321-972 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WINTERPARK FL
2002-03-25 321-222 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J TITUSVILLE FL
2001-10-29 321-421 0XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J EAU GALLIE FL
2001-10-23 321-322 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J APOPKA FL
2001-03-22 321-541 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MELBOURNE FL
2001-03-02 321-832 8XXX9XXX which blocks → PAETEC ITEL, LLC 829J SANFORD FL
— 321-206 not yet reported which blocks → PAETEC ITEL, LLC 829J ORLANDO FL
— 321-212 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J COCOA FL
— 321-214 7XXX8XXX which blocks → PAETEC ITEL, LLC 829J WINTERPARK FL
— 321-215 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MELBOURNE FL
— 321-218 1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J REEDYCREEK FL
— 321-219 8XXX9XXX which blocks → PAETEC ITEL, LLC 829J KISSIMMEE FL
— 321-221 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WINTERGRDN FL
— 321-226 8XXX which blocks → PAETEC ITEL, LLC 829J EASTORANGE FL
— 321-238 8XXX which blocks → PAETEC ITEL, LLC 829J GENEVA FL
— 321-244 3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J OVIEDO FL
— 321-249 2XXX3XXX4XXX5XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J SANFORD FL
— 321-256 3XXX which blocks → PAETEC ITEL, LLC 829J APOPKA FL
— 321-257 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J SANFORD FL
— 321-260 2XXX4XXX which blocks → PAETEC ITEL, LLC 829J KENANSVL FL
— 321-273 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J MONTVERDE FL
— 321-274 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WINTERPARK FL
— 321-275 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J SANFORD FL
— 321-319 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J ORLANDO FL
— 321-369 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MELBOURNE FL
— 321-395 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J LKBUNAVIST FL
— 321-396 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J APOPKA FL
— 321-397 8XXX which blocks → PAETEC ITEL, LLC 829J WINTERPARK FL
— 321-401 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J WKISSIMMEE FL
— 321-402 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J KISSIMMEE FL
— 321-406 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J COCOABEACH FL
— 321-437 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J KISSIMMEE FL
— 321-559 0XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J CELEBRATN FL
— 321-567 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J TITUSVILLE FL
— 321-576 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J COCOA FL
— 321-600 4XXX which blocks → PAETEC ITEL, LLC 829J EAU GALLIE FL
— 321-735 2XXX3XXX4XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J COCOA FL
— 321-747 3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J TITUSVILLE FL
— 321-775 2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J EAU GALLIE FL
— 321-785 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J COCOABEACH FL
— 321-821 3XXX4XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J MELBOURNE FL
— 321-866 1XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J COCOABEACH FL
— 321-872 4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MELBOURNE FL
— 321-890 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J COCOA FL
— 321-989 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MELBOURNE FL

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.