NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

338 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
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 26
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
— 719-757 0XXX5XXX6XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - CO 6118 COLORDOSPG CO
— 719-760 4XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GENOA CO
— 719-761 0XXX2XXX which blocks → T-MOBILE USA, INC. 6529 COLORDOSPG CO
— 719-763 not yet reported which blocks → EASTERN SLOPE RURAL TEL. ASSN., INC. 2186 GENOA CO
— 719-764 not yet reported which blocks → AGATE MUTUAL TELEPHONE COOPERATIVE ASSOCIATION 2178 AGATE CO
— 719-765 not yet reported which blocks → EASTERN SLOPE RURAL TEL. ASSN., INC. 2186 FLAGLER CO
— 719-767 1XXX6XXX7XXX · 2 holders which blocks → CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK 2185 CHEYENWLLS CO
— 719-768 not yet reported which blocks → EASTERN SLOPE RURAL TEL. ASSN., INC. 2186 ARRIBA CO
— 719-771 0–9 XXXall 10 · 8 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LIMON CO
— 719-775 1XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → QWEST CORPORATION 9636 LIMON CO
— 719-776 0XXX9XXX · 2 holders which blocks → QWEST CORPORATION 9636 COLORDOSPG CO
— 719-777 not yet reported which blocks → QWEST CORPORATION 9636 COLORDOSPG CO
— 719-778 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PUEBLO CO
— 719-783 not yet reported which blocks → CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK 2185 WESTCLIFFE CO
— 719-784 7XXX8XXX · 2 holders which blocks → QWEST CORPORATION 9636 FLORENCE CO
— 719-785 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - CO 6118 COLORDOSPG CO
— 719-787 1XXX5XXX6XXX7XXX8XXX which blocks → CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK 2185 CAMPO CO
— 719-799 0XXX3XXX6XXX8XXX9XXX · 3 holders which blocks → AT&T - LOCAL 7421 COLORDOSPG CO
— 719-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CO
— 719-821 none assigned yet which blocks → T-MOBILE USA, INC. 6529 PUEBLO CO
— 719-825 2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - CO 026D BURLINGTON CO
— 719-826 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K FOWLER CO
— 719-829 not yet reported which blocks → CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK 2185 LAMAR CO
— 719-836 5XXX8XXX · 2 holders which blocks → QWEST CORPORATION 9636 FAIRPLAY CO
— 719-837 none assigned yet which blocks → SOUTH PARK TELEPHONE COMPANY 2195 HARTSEL CO
— 719-838 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FAIRPLAY CO
— 719-839 3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FAIRPLAY CO
— 719-843 not yet reported which blocks → CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK 2185 MANASSA CO
— 719-845 7XXX which blocks → QWEST CORPORATION 9636 TRINIDAD CO
— 719-846 not yet reported which blocks → QWEST CORPORATION 9636 TRINIDAD CO
— 719-849 2XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 MONTEVISTA CO
— 719-850 4XXX5XXX6XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 MONTEVISTA CO
— 719-852 not yet reported which blocks → QWEST CORPORATION 9636 MONTEVISTA CO
— 719-853 not yet reported which blocks → CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK 2185 CHERAW CO
— 719-859 7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TRINIDAD CO
— 719-867 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - CO 6118 COLORDOSPG CO
— 719-868 7XXX8XXX9XXX · 3 holders which blocks → CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK 2185 WESTON CO
— 719-873 3XXX6XXX7XXX8XXX · 3 holders which blocks → QWEST CORPORATION 9636 DEL NORTE CO
— 719-884 6XXX which blocks → LEVEL 3 TELECOM OF COLORADO, LLC - CO 7590 COLORDOSPG CO
— 719-886 not yet reported which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F COLORDOSPG CO
— 719-890 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 WALSENBURG CO
— 719-892 1XXX2XXX3XXX6XXX7XXX · 3 holders which blocks → N.E. COLORADO CELLULAR, INC. 6874 LIMON CO
— 719-896 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → METROPCS, INC. 5562 COLORDOSPG CO
— 719-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CO
— 719-921 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 COLORDOSPG CO
— 719-924 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → T-MOBILE USA, INC. 6529 PUEBLO CO
— 719-930 0XXX2XXX which blocks → T-MOBILE USA, INC. 6529 COLORDOSPG CO
— 719-931 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CO 026D LAMAR CO
— 719-940 3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAMAR CO
— 719-941 1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → QWEST CORPORATION 9636 AGUILAR CO

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.