NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 707
ONVOY, LLC - CA 6
NEW CINGULAR WIRELESS PCS, LLC 1
EXIANT COMMUNICATIONS LLC 1
BANDWIDTH.COM CLEC, LLC - CA 1
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2011-04-28 707-621-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E UKIAH CA
2011-04-28 707-621-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E UKIAH CA
2011-04-28 707-840-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ARCATA CA
2011-04-25 707-777-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BRIDGEVL CA
2011-04-13 707-273-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EUREKA CA
2011-04-12 707-266-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NAPA CA
2011-04-11 707-595-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SANTA ROSA CA
2011-03-31 707-278-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E KELSEYVL CA
2011-03-31 707-561-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L VALLEJO CA
2011-03-31 707-721-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SONOMA CA
2011-03-30 707-603-5XXX 5000–5999Assigned METROPCS, INC. 5562 NAPA CA
2011-03-28 707-509-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SONOMA CA
2011-03-25 707-376-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 UKIAH CA
2011-03-25 707-666-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C NAPA CA
2011-03-25 707-666-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C NAPA CA
2011-03-25 707-666-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C NAPA CA
2011-03-25 707-882-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J POINTARENA CA
2011-03-21 707-474-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J VACAVILLE CA
2011-03-21 707-900-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C LAKEPORT CA
2011-03-15 707-722-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PEPPERWOOD CA
2011-03-09 707-887-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C FORESTVL CA
2011-03-08 707-999-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VACAVILLE CA
2011-02-25 707-701-1XXX 1000–1999Assigned METROPCS, INC. 5562 LOWER LAKE CA
2011-02-22 707-273-0XXX 0000–0999Assigned METROPCS, INC. 5562 EUREKA CA
2011-02-19 707-921-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTA ROSA CA
2011-02-18 707-654-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C VALLEJO CA
2011-02-07 707-362-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EUREKA CA
2011-01-14 707-772-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTLM MAIN CA
2011-01-11 707-200-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ST HELENA CA
2011-01-11 707-706-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C ANNAPOLIS CA
2011-01-07 707-266-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NAPA CA
2011-01-05 707-349-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LAKEPORT CA
2011-01-05 707-672-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EUREKA CA
2011-01-05 707-672-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EUREKA CA
2011-01-05 707-951-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CRESCENTCY CA
2011-01-04 707-720-4XXX 4000–4999Assigned METROPCS, INC. 5562 FRFLD-SUIS CA
2010-12-22 707-654-5XXX 5000–5999Assigned METROPCS, INC. 5562 VALLEJO CA
2010-12-22 707-654-6XXX 6000–6999Assigned METROPCS, INC. 5562 VALLEJO CA
2010-12-21 707-317-8XXX 8000–8999Assigned METROPCS, INC. 5562 VACAVILLE CA
2010-12-21 707-541-8XXX 8000–8999Assigned METROPCS, INC. 5562 SANTA ROSA CA
2010-12-21 707-571-9XXX 9000–9999Assigned METROPCS, INC. 5562 SANTA ROSA CA
2010-12-16 707-356-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ELK CA
2010-12-16 707-408-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E KENWOOD CA
2010-12-16 707-520-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MONTE RIO CA
2010-12-16 707-687-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WINDSOR CA
2010-12-16 707-722-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PEPPERWOOD CA
2010-12-16 707-847-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E TMCV TMCV CA
2010-12-16 707-872-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OCCIDENTAL CA
2010-12-09 707-334-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VALLEJO CA
2010-12-08 707-559-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PTLM MAIN CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.