NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 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, last 30 days
8X8, INC. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
— 913-901 4XXX6XXX7XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 KANSASCITY KS
— 913-904 2XXX4XXX6XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
— 913-905 9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - KS 7593 KANSASCITY KS
— 913-906 7XXX8XXX which blocks → SOUTHWESTERN BELL 9533 KANSASCITY KS
— 913-907 0XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → AT&T - LOCAL 7421 KANSASCITY KS
— 913-908 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 KANSASCITY KS
— 913-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX KS
— 913-913 not yet reported which blocks → KS
— 913-915 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 KANSASCITY KS
— 913-917 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 KANSASCITY KS
— 913-927 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 KANSASCITY KS
— 913-928 6XXX which blocks → SOUTHWESTERN BELL 9533 KANSASCITY KS
— 913-938 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K GARDNER KS
— 913-946 2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 LEAVENWTH KS
— 913-947 not yet reported which blocks → CONSOLIDATED COMMUNICATIONS OF MISSOURI COMPANY 0472 WCLEVELAND KS
— 913-950 not yet reported which blocks → KS
— 913-958 not yet reported which blocks → KS
— 913-959 not yet reported which blocks → KS
— 913-962 not yet reported which blocks → SOUTHWESTERN BELL 9533 KANSASCITY KS
— 913-963 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 KANSASCITY KS
— 913-964 not yet reported which blocks → CONSOLIDATED COMMUNICATIONS OF MISSOURI COMPANY 0472 WCLEVELAND KS
— 913-967 2XXX3XXX5XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 KANSASCITY KS
— 913-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX KS
— 913-978 not yet reported which blocks → SPOK, INC. 6630 KANSASCITY KS
— 913-980 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 KANSASCITY KS
— 913-981 3XXX7XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - KS 7593 KANSASCITY KS
— 913-982 6XXX7XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - KS 7593 KANSASCITY KS
— 913-988 not yet reported which blocks → KS
— 913-993 not yet reported which blocks → SOUTHWESTERN BELL 9533 KANSASCITY KS
— 914-200 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN01 NY
— 914-202 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WSCHSTZN02 NY
— 914-204 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 POUGHKEPSI NY
— 914-205 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 BEDFORDVLG NY
— 914-206 not yet reported which blocks → ONVOY, LLC- NY 384C WSCHSTZN08 NY
— 914-209 not yet reported which blocks → AMERICAN NETWORK, INC. 8667 MOUNTKISCO NY
— 914-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 914-213 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NEWBURGH NY
— 914-214 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TC SYSTEMS, INC. - NY 7140 YORKTN HTS NY
— 914-216 0XXX6XXX7XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN08 NY
— 914-217 1XXX2XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN08 NY
— 914-218 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TC SYSTEMS, INC. - NY 7140 MOUNTKISCO NY
— 914-219 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TC SYSTEMS, INC. - NY 7140 ARMONK VLG NY
— 914-220 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WSCHSTZN08 NY
— 914-222 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E WSCHSTZN02 NY
— 914-224 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN08 NY
— 914-225 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7650 WSCHSTZN09 NY
— 914-227 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN08 NY
— 914-231 none assigned yet which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 WSCHSTZN04 NY
— 914-232 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 KATONAH NY
— 914-233 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 WSCHSTZN01 NY

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.