NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 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, all time — NPA 714
PACIFIC BELL 266
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 78
NEW CINGULAR WIRELESS PCS, LLC 72
METROPCS NETWORKS, LLC 62
T-MOBILE USA, INC. 56
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
— 714-887 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HUNTITNBCH CA
— 714-888 4XXX5XXX6XXX7XXX · 3 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FULLERTON CA
— 714-889 0XXX8XXX9XXX · 2 holders which blocks → PACIFIC BELL (COMPETITIVE) 7480 WESTMINSTR CA
— 714-890 2XXX which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-891 not yet reported which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-892 not yet reported which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-893 not yet reported which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-894 not yet reported which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-895 not yet reported which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-896 not yet reported which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-897 not yet reported which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-898 not yet reported which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-899 not yet reported which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-901 not yet reported which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-902 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 WESTMINSTR CA
— 714-903 not yet reported which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-904 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
— 714-905 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ANAHEIM CA
— 714-906 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANAHEIM CA
— 714-907 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HUNTITNBCH CA
— 714-908 4XXX5XXX6XXX · 3 holders which blocks → ONVOY, LLC - CA 649C WESTMINSTR CA
— 714-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 714-912 0–9 XXXall 10 · 5 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ORANGE CA
— 714-913 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 SANTA ANA CA
— 714-914 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
— 714-915 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAGUNA BCH CA
— 714-917 5XXX7XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ANAHEIM CA
— 714-918 not yet reported which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SANTA ANA CA
— 714-919 6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ORANGE CA
— 714-920 none assigned yet which blocks → METROPCS NETWORKS, LLC 899D ANAHEIM CA
— 714-921 not yet reported which blocks → PACIFIC BELL 9740 ORANGE CA
— 714-922 0XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 ORANGE CA
— 714-923 3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 ORANGE CA
— 714-924 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 PLACENTIA CA
— 714-925 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
— 714-926 none assigned yet which blocks → METROPCS NETWORKS, LLC 899D ANAHEIM CA
— 714-927 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PACIFIC BELL 9740 PLACENTIA CA
— 714-928 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANAHEIM CA
— 714-930 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → IP HORIZON LLC 515J FULLERTON CA
— 714-931 none assigned yet which blocks → METROPCS NETWORKS, LLC 899D ANAHEIM CA
— 714-932 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANAHEIM CA
— 714-933 0XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 WESTMINSTR CA
— 714-934 not yet reported which blocks → FRONTIER CALIFORNIA INC. 2319 WESTMINSTR CA
— 714-935 not yet reported which blocks → PACIFIC BELL 9740 ORANGE CA
— 714-936 none assigned yet which blocks → T-MOBILE USA, INC. 6529 ANAHEIM CA
— 714-937 not yet reported which blocks → PACIFIC BELL 9740 ORANGE CA
— 714-938 5XXX which blocks → PACIFIC BELL 9740 ORANGE CA
— 714-939 not yet reported which blocks → PACIFIC BELL 9740 ORANGE CA
— 714-940 not yet reported which blocks → PACIFIC BELL 9740 ORANGE CA
— 714-942 0–9 XXXall 10 · 5 holders which blocks → COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ANA CA

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.