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 317
PAETEC ITEL, LLC 31
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
2015-06-11 317-744 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
2011-03-17 317-378 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
2008-01-25 317-452 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
2006-01-18 317-755 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
2004-02-26 317-224 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
2001-04-03 317-268 2XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PLAINFIELD IN
— 317-203 5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J PLAINFIELD IN
— 317-214 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J NOBLESVL IN
— 317-215 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J GREENWOOD IN
— 317-218 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J CARMEL IN
— 317-219 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NOBLESVL IN
— 317-279 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J PLAINFIELD IN
— 317-284 1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J FISHERS IN
— 317-396 not yet reported which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
— 317-472 6XXX7XXX which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
— 317-534 5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J GREENWOOD IN
— 317-536 not yet reported which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
— 317-548 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J WESTNEWTON IN
— 317-642 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J SHELBYVL IN
— 317-663 5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J CARMEL IN
— 317-674 2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J NOBLESVL IN
— 317-677 2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
— 317-803 0XXX1XXX5XXX6XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
— 317-807 6XXX which blocks → PAETEC ITEL, LLC 829J GREENWOOD IN
— 317-808 not yet reported which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
— 317-813 9XXX which blocks → PAETEC ITEL, LLC 829J FISHERS IN
— 317-819 not yet reported which blocks → PAETEC ITEL, LLC 829J CARMEL IN
— 317-853 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J CARMEL IN
— 317-860 not yet reported which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
— 317-863 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J FISHERS IN
— 317-947 5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J CUMBERLAND IN

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.