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
2009-12-14 760-623 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C BRAWLEY CA
2009-10-27 760-428 0–9 XXXall 10 · 5 holders which blocks → FRONTIER CALIFORNIA INC. 4420 RIDGECREST CA
2009-09-11 760-330 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VISTA CA
2009-06-26 760-656 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 PALM SPG CA
2009-06-03 760-895 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 PALMDESERT CA
2009-05-20 760-894 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 DSERTHTSPG CA
2009-04-30 760-498 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 BRAWLEY CA
2009-03-13 760-995 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VTVL HSPR CA
2009-02-17 760-620 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C PALM SPG CA
2009-01-08 760-569 0–9 XXXall 10 · 3 holders which blocks → WIDE VOICE, LLC - CA 252F PALM SPG CA
2008-11-17 760-719 0–9 XXXwhole prefix which blocks → PACIFIC BELL 9740 OCSD PDTN CA
2008-10-02 760-515 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VTVL APVY CA
2008-07-23 760-298 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 VISTA CA
2008-06-12 760-537 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALM SPG CA
2008-02-28 760-289 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 INDIO CA
2008-01-25 760-552 0–9 XXXall 10 · 6 holders which blocks → FRONTIER CALIFORNIA INC. 4420 VICTORVL CA
2008-01-25 760-592 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CA 649C EL CENTRO CA
2007-12-17 760-813 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VTVL APVY CA
2007-12-11 760-983 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 VTVL HSPR CA
2007-11-14 760-794 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G PALM SPG CA
2007-10-27 760-713 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VTVL HSPR CA
2007-10-24 760-658 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2007-10-24 760-681 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 OCSD OCSD CA
2007-09-19 760-640 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CA 649C BLYTHE CA
2007-08-24 760-968 0–9 XXXall 10 · 4 holders which blocks → UTILITY TELECOM GROUP, LLC - CA 9262 PALM SPG CA
2007-08-17 760-881 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2007-07-20 760-636 0–9 XXXall 10 · 4 holders which blocks → FRONTIER CALIFORNIA INC. 2319 PALMDESERT CA
2007-07-17 760-625 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2007-06-20 760-619 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 INDIO CA
2007-06-11 760-618 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7147 CALEXICO CA
2007-03-26 760-605 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 VICTORVL CA
2007-03-26 760-610 0–9 XXXall 10 · 4 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PALMDESERT CA
2007-03-23 760-595 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 EL CENTRO CA
2007-03-08 760-541 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D INDIO CA
2007-03-05 760-523 0–9 XXXall 10 · 7 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J VTVL ADLN CA
2007-02-08 760-453 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 OCSD OCSD CA
2007-01-17 760-296 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 INDIO CA
2006-12-14 760-205 0–9 XXXall 10 · 5 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J DESERT CTR CA
2006-09-13 760-671 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D DSERTHTSPG CA
2006-09-05 760-693 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 EL CENTRO CA
2006-08-29 760-270 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2006-08-29 760-669 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K VTVL HSPR CA
2006-08-09 760-978 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 OCSD OCSD CA
2006-05-19 760-972 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 INDIO CA
2006-03-30 760-615 0–9 XXXall 10 · 7 holders which blocks → XO CALIFORNIA, INC. 7262 PAUMA VLY CA
2006-03-30 760-810 0–9 XXXall 10 · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K VTVL APVY CA
2006-03-28 760-892 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 WARNER SPG CA
2006-01-26 760-596 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 VICTORVL CA
2006-01-26 760-694 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2006-01-26 760-927 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 VICTORVL 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.