NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 25
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12
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
— 678-995 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ATLANTA NE GA
— 678-996 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ATLANTA NW GA
— 678-998 not yet reported which blocks → EXIANT COMMUNICATIONS LLC 114J ATLANTA GA
— 678-999 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → PAETEC ITEL, LLC 829J ATLANTA GA
— 679-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 679-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 679-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 679-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 679-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST MI
— 679-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 679-700 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 679-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 679-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 679-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 679-950 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 679-958 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 679-959 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 679-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 680-207 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E SYRACUSE NY
— 680-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 680-221 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → TELNYX LLC 073H MADRID NY
— 680-222 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C WATERTOWN NY
— 680-272 2XXX3XXX · 2 holders which blocks → TERRA NOVA TELECOM INC. 145J SENECA FLS NY
— 680-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 680-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 680-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 680-550 not yet reported which blocks → NY
— 680-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST NY
— 680-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 680-639 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GOUVERNEUR NY
— 680-697 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC- NY 384C SYRACUSE NY
— 680-700 not yet reported which blocks → NY
— 680-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 680-777 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC- NY 384C BRIDGEPORT NY
— 680-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 680-850 not yet reported which blocks → NY
— 680-888 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C MADRID NY
— 680-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 680-950 not yet reported which blocks → NY
— 680-958 not yet reported which blocks → NY
— 680-959 not yet reported which blocks → NY
— 680-970 not yet reported which blocks → NY
— 680-976 not yet reported which blocks → NY
— 680-999 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC- NY 384C ANTWERP NY
— 681-202 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - WV 449F SNOWSHOE WV
— 681-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT WV
— 681-218 0–9 XXXall 10 · 5 holders which blocks → LUMOS NETWORKS INC. - VA 7849 ANSTED WV
— 681-221 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CSC VOICE, LLC 612K EAST BANK WV
— 681-257 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - WV 449F MANNINGTON WV
— 681-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT WV

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.