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
— 845-905 2XXX5XXX6XXX9XXX which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 845-913 2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J NEWBURGH NY
— 845-915 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 TUXEDO NY
— 845-918 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 SUFFERN NY
— 845-920 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → VERIZON NEW YORK, INC. 9104 PEARLRIVER NY
— 845-926 0XXX1XXX2XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J NEWBURGH NY
— 845-928 not yet reported which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 HIGHLANDML NY
— 845-932 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 LKHUNTIGTN NY
— 845-938 0XXX1XXX9XXX which blocks → PAETEC ITEL, LLC 829J HIGHLD FLS NY
— 845-940 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 BREWSTER NY
— 845-942 6XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 HAVERSTRAW NY
— 845-943 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J KINGSTON NY
— 845-945 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C CARMEL NY
— 845-947 0XXX7XXX8XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 HAVERSTRAW NY
— 845-950 not yet reported which blocks → NY
— 845-955 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 845-956 0XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → WARWICK VALLEY TELEPHONE COMPANY - NY 4140 MIDDLETOWN NY
— 845-958 not yet reported which blocks → NY
— 845-959 not yet reported which blocks → NY
— 845-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT BREWSTER NY
— 845-977 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 HIGHLD FLS NY
— 845-985 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 GRAHAMSVL NY
— 845-986 not yet reported which blocks → ALTEVA OF WARWICK LLC 0135 WARWICK NY
— 845-987 none assigned yet which blocks → ALTEVA OF WARWICK LLC 0135 WARWICK NY
— 845-988 none assigned yet which blocks → ALTEVA OF WARWICK LLC 0135 WARWICK NY
— 845-999 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C NEW CITY NY
— 847-201 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROUND LAKE IL
— 847-202 not yet reported which blocks → ILLINOIS BELL TEL CO 9329 PALATINE IL
— 847-203 not yet reported which blocks → SPOK, INC. 6630 NORTHBROOK IL
— 847-204 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
— 847-205 not yet reported which blocks → ILLINOIS BELL TEL CO 9329 NORTHBROOK IL
— 847-207 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HINSDALE IL
— 847-209 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HINSDALE IL
— 847-210 not yet reported which blocks → SPOK, INC. 6630 NORTHBROOK IL
— 847-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 847-212 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WHEELING IL
— 847-213 2XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 SKOKIE IL
— 847-214 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J ELGIN IL
— 847-215 not yet reported which blocks → ILLINOIS BELL TEL CO 9329 WHEELING IL
— 847-216 not yet reported which blocks → SPOK, INC. 6630 NORTHBROOK IL
— 847-217 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROSELLE IL
— 847-218 not yet reported which blocks → SPOK, INC. 6630 NORTHBROOK IL
— 847-220 4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROSELLE IL
— 847-221 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PALATINE IL
— 847-222 3XXX which blocks → ILLINOIS BELL TEL CO 9329 ARLIGTNHTS IL
— 847-223 not yet reported which blocks → ILLINOIS BELL TEL CO 9329 GRAYSLAKE IL
— 847-225 not yet reported which blocks → SPOK, INC. 6630 NORTHBROOK IL
— 847-226 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHBROOK IL
— 847-227 5XXX7XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 DESPLAINES IL

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.