NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 760
FRONTIER CALIFORNIA INC. 140
PACIFIC BELL 130
NEW CINGULAR WIRELESS PCS, LLC 70
LEVEL 3 COMMUNICATIONS, LLC - CA 61
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 60
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
2005-12-01 760-981 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 VTVL HSPR CA
2005-09-21 760-987 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2005-08-02 760-974 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 JOSHUATREE CA
2005-06-03 760-904 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALM SPG CA
2005-03-02 760-890 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CALEXICO CA
2005-02-23 760-844 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 PALM SPG CA
2005-01-03 760-780 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K VICTORVL CA
2004-08-12 760-982 not yet reported which blocks → SHELCOMM 0051 VTVL HSPR CA
2003-12-02 760-986 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → AT&T - LOCAL 7421 JULIAN CA
2003-07-17 760-992 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 PALM SPG CA
2003-03-28 760-969 0–9 XXXall 10 · 4 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PALM SPG CA
2003-03-14 760-614 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LONE PINE CA
2003-03-14 760-616 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BRIDGEPORT CA
2003-02-25 760-699 0–9 XXXall 10 · 6 holders which blocks → INTRADO COMMUNICATIONS, LLC 808C PALM SPG CA
2003-01-15 760-914 4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MAMMOTHLKS CA
2003-01-15 760-915 1XXX2XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 INDEPNDNCE CA
2002-10-04 760-702 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2002-09-20 760-840 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 ENCINITAS CA
2002-09-19 760-680 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VTVL HSPR CA
2002-09-19 760-701 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 EL MIRAGE CA
2002-08-21 760-646 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VTVL APVY CA
2002-08-21 760-910 0XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS NETWORKS, LLC 899D TWNTYNPLMS CA
2002-08-21 760-917 7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 VISTA CA
2002-08-01 760-812 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 LKISABELLA CA
2002-08-01 760-960 6XXX7XXX which blocks → T-MOBILE USA, INC. 6529 EL CENTRO CA
2002-08-01 760-977 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 RIDGECREST CA
2002-07-17 760-792 8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2002-07-17 760-880 not yet reported which blocks → T-MOBILE USA, INC. 6529 PALM SPG CA
2002-07-17 760-908 1XXX2XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 OCSD OCSD CA
2002-06-14 760-673 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 PALM SPG CA
2002-05-17 760-473 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OCSD CRLS CA
2002-05-17 760-912 not yet reported which blocks → T-MOBILE USA, INC. 6529 VICTORVL CA
2002-04-15 760-677 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → T-MOBILE USA, INC. 6529 RIDGECREST CA
2002-04-15 760-823 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 JULIAN CA
2002-04-15 760-842 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VISTA CA
2002-03-21 760-684 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 VICTORVL CA
2002-02-22 760-238 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 INDIO CA
2002-02-22 760-239 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 RAMONA CA
2002-01-28 760-265 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2002-01-28 760-490 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 VICTORVL CA
2002-01-28 760-580 not yet reported which blocks → T-MOBILE USA, INC. 6529 ESCONDIDO CA
2001-12-28 760-455 none assigned yet which blocks → METROPCS, INC. 5562 EL CENTRO CA
2001-11-29 760-403 1XXX2XXX which blocks → METROPCS NETWORKS, LLC 899D VICTORVL CA
2001-11-29 760-449 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → AT&T - LOCAL 7421 PALM SPG CA
2001-10-19 760-271 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OCSD CRLS CA
2001-10-19 760-574 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2001-10-19 760-898 7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALM SPG CA
2001-10-18 760-660 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → METROPCS NETWORKS, LLC 899D DSERTHTSPG CA
2001-10-18 760-672 not yet reported which blocks → T-MOBILE USA, INC. 6529 OCSD OCSD CA
2001-10-18 760-808 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.