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 240
PAETEC ITEL, LLC 63
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
2012-04-05 240-613 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN4 MD
2010-10-21 240-500 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J HAGERSTOWN MD
2005-05-27 240-821 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN3 MD
2005-05-20 240-477 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J GAITHERSBG MD
2005-04-22 240-454 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J GAITHERSBG MD
2004-07-27 240-405 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J FREDERICK MD
2003-10-30 240-681 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J BRANDYWINE MD
2001-06-20 240-455 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN5 MD
2001-05-09 240-333 not yet reported which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN2 MD
2001-05-09 240-364 4XXX which blocks → PAETEC ITEL, LLC 829J GAITHERSBG MD
2001-05-09 240-494 6XXX which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN3 MD
2001-05-09 240-737 not yet reported which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN4 MD
2001-05-09 240-747 7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WSNGTNZN11 MD
2001-05-09 240-767 4XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN5 MD
2001-05-09 240-864 not yet reported which blocks → PAETEC ITEL, LLC 829J WSNGTNZN10 MD
2001-05-09 240-868 2XXX5XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WSNGTNZN12 MD
2001-05-09 240-949 1XXX2XXX4XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WSNGTNZN16 MD
— 240-207 1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J DAMASCS236 MD
— 240-222 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WALDORF MD
— 240-235 not yet reported which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN2 MD
— 240-238 not yet reported which blocks → PAETEC ITEL, LLC 829J WSNGTNZN10 MD
— 240-283 4XXX5XXX7XXX which blocks → PAETEC ITEL, LLC 829J WSNGTNZN11 MD
— 240-289 2XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN6 MD
— 240-295 2XXX3XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LAUREL236 MD
— 240-296 2XXX which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN4 MD
— 240-303 2XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WSNGTNZN16 MD
— 240-312 2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN5 MD
— 240-320 2XXX3XXX4XXX5XXX6XXX7XXX which blocks → PAETEC ITEL, LLC 829J WALDORF MD
— 240-326 2XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WSNG236Z15 MD
— 240-335 2XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WSNG236Z14 MD
— 240-339 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WSNG236Z15 MD
— 240-361 7XXX8XXX which blocks → PAETEC ITEL, LLC 829J GAITHERSBG MD
— 240-387 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WSNG236Z13 MD
— 240-389 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ASHTON236 MD
— 240-390 2XXX3XXX5XXX6XXX7XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J ASHTON236 MD
— 240-395 3XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN2 MD
— 240-403 7XXX which blocks → PAETEC ITEL, LLC 829J WSNGTNZN10 MD
— 240-430 6XXX8XXX which blocks → PAETEC ITEL, LLC 829J WSNGTNZN11 MD
— 240-433 2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WSNGTNZN12 MD
— 240-450 2XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN3 MD
— 240-473 2XXX3XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WSNG236Z13 MD
— 240-482 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN2 MD
— 240-485 4XXX6XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN3 MD
— 240-487 4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN4 MD
— 240-492 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN5 MD
— 240-493 4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WSHNGTNZN6 MD
— 240-499 4XXX5XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WSNGTNZN10 MD
— 240-514 4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WSNGTNZN11 MD
— 240-516 4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WSNGTNZN12 MD
— 240-542 4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WSNG236Z13 MD

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.