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 336
PAETEC ITEL, LLC 43
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
2011-12-19 336-360 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J RAMSEUR NC
2009-04-29 336-500 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
2004-12-01 336-899 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J HIGH POINT NC
2004-03-16 336-258 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ELKIN NC
2001-10-02 336-560 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J SUMMERFLD NC
— 336-223 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J BURLINGTON NC
— 336-235 1XXX5XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-245 1XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WINSTN SAL NC
— 336-251 2XXX3XXX4XXX5XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J WINSTN SAL NC
— 336-252 2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-261 3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J BURLINGTON NC
— 336-268 0XXX1XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-343 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J BURLINGTON NC
— 336-346 2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-347 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J REIDSVILLE NC
— 336-354 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WINSTN SAL NC
— 336-369 not yet reported which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-387 6XXX which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-394 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J REIDSVILLE NC
— 336-395 3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J BURLINGTON NC
— 336-397 4XXX5XXX6XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WINSTN SAL NC
— 336-398 0XXX3XXX4XXX6XXX7XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-478 5XXX7XXX which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-480 1XXX4XXX5XXX6XXX7XXX8XXX which blocks → PAETEC ITEL, LLC 829J WINSTN SAL NC
— 336-482 1XXX5XXX6XXX7XXX8XXX which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-483 1XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ASHEBORO NC
— 336-484 1XXX4XXX5XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J MONTICELLO NC
— 336-485 1XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J SUMMERFLD NC
— 336-494 1XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J BURLINGTON NC
— 336-496 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J REIDSVILLE NC
— 336-497 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J KERNERSVL NC
— 336-506 6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J BURLINGTON NC
— 336-544 not yet reported which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-553 7XXX8XXX which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-564 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J KERNERSVL NC
— 336-603 1XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J GIBSONVL NC
— 336-637 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J REIDSVILLE NC
— 336-714 7XXX which blocks → PAETEC ITEL, LLC 829J WINSTN SAL NC
— 336-808 5XXX6XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-809 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → PAETEC ITEL, LLC 829J GREENSBORO NC
— 336-831 3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WINSTN SAL NC
— 336-837 5XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J WINSTN SAL NC
— 336-981 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J NOWILKESBO NC

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.