NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
— 814-939 1XXX4XXX5XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PUNXSUTWNY PA
— 814-940 none assigned yet which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALTOONA PA
— 814-941 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALTOONA PA
— 814-942 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALTOONA PA
— 814-943 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALTOONA PA
— 814-944 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALTOONA PA
— 814-945 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LUDLOW PA
— 814-946 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALTOONA PA
— 814-947 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALTOONA PA
— 814-948 0XXX1XXX3XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 BARNESBORO PA
— 814-949 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALTOONA PA
— 814-950 not yet reported which blocks → PA
— 814-951 1XXX2XXX3XXX6XXX7XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 BARNESBORO PA
— 814-958 not yet reported which blocks → PA
— 814-959 not yet reported which blocks → PA
— 814-965 0XXX8XXX which blocks → WINDSTREAM PENNSYLVANIA, INC. 0176 JOHNSONBG PA
— 814-966 not yet reported which blocks → ARMSTRONG TEL. CO. NORTH 0195 DUKECENTER PA
— 814-967 none assigned yet which blocks → WINDSTREAM PENNSYLVANIA, INC. 0176 TOWNVILLE PA
— 814-968 1XXX8XXX · 2 holders which blocks → WINDSTREAM PENNSYLVANIA, INC. 0176 SHEFFIELD PA
— 814-969 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ERIE PA
— 814-975 0XXX2XXX3XXX4XXX5XXX7XXX9XXX · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MT JEWETT PA
— 814-976 not yet reported which blocks → PA
— 814-977 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEDFORD PA
— 814-979 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEDFORD PA
— 814-981 0XXX1XXX2XXX8XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H ERIE PA
— 815-203 not yet reported which blocks → SPOK, INC. 6630 JOLIET IL
— 815-204 not yet reported which blocks → SPOK, INC. 6630 CRYSTAL LK IL
— 815-206 8XXX9XXX · 2 holders which blocks → ILLINOIS BELL TEL CO 9329 WOODSTOCK IL
— 815-207 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 JOLIET IL
— 815-208 0–9 XXXall 10 · 4 holders which blocks → MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F FULTON IL
— 815-210 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
— 815-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 815-212 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 JOLIET IL
— 815-214 0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 KANKAKEE IL
— 815-216 4XXX5XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 KANKAKEE IL
— 815-217 0–9 XXXall 10 · 5 holders which blocks → DIGITAL NETWORK ACCESS COMMUNICATIONS, INC. - IL 972C DE KALB IL
— 815-218 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKFORD IL
— 815-220 5XXX9XXX · 2 holders which blocks → ILLINOIS BELL TEL CO 9329 LA SALLE IL
— 815-221 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LOCKPORT IL
— 815-222 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKFORD IL
— 815-223 not yet reported which blocks → ILLINOIS BELL TEL CO 9329 LA SALLE IL
— 815-224 not yet reported which blocks → ILLINOIS BELL TEL CO 9329 LA SALLE IL
— 815-225 not yet reported which blocks → CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 1183 MILLEDGEVL IL
— 815-226 not yet reported which blocks → ILLINOIS BELL TEL CO 9329 ROCKFORD IL
— 815-227 7XXX which blocks → ILLINOIS BELL TEL CO 9329 ROCKFORD IL
— 815-228 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OGLESBY IL
— 815-229 not yet reported which blocks → ILLINOIS BELL TEL CO 9329 ROCKFORD IL
— 815-230 1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PLAINFIELD IL
— 815-231 4XXX6XXX8XXX · 3 holders which blocks → ILLINOIS BELL TEL CO 9329 ROCKFORD IL
— 815-232 not yet reported which blocks → FRONTIER NORTH, INC. - IL 1036 FREEPORT IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.