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
2006-03-31 707-701-4XXX 4000–4999Assigned UNITED STATES CELLULAR - CA 6261 LOWER LAKE CA
2006-03-24 707-515-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VALLEJO CA
2006-03-24 707-559-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PTLM MAIN CA
2006-03-01 707-670-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HOPLAND CA
2006-02-22 707-816-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 FRFLD-SUIS CA
2006-02-22 707-816-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 FRFLD-SUIS CA
2006-02-22 707-816-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 FRFLD-SUIS CA
2006-02-21 707-514-8XXX 8000–8999Assigned METROPCS, INC. 5562 VACAVILLE CA
2006-02-21 707-514-9XXX 9000–9999Assigned METROPCS, INC. 5562 VACAVILLE CA
2006-02-21 707-703-2XXX 2000–2999Assigned METROPCS, INC. 5562 SANTA ROSA CA
2006-02-21 707-703-3XXX 3000–3999Assigned METROPCS, INC. 5562 SANTA ROSA CA
2006-02-21 707-703-6XXX 6000–6999Assigned METROPCS, INC. 5562 SANTA ROSA CA
2006-02-21 707-703-7XXX 7000–7999Assigned METROPCS, INC. 5562 SANTA ROSA CA
2006-02-14 707-282-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 KENWOOD CA
2006-02-10 707-335-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BRIDGEVL CA
2006-02-09 707-299-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NAPA CA
2006-02-09 707-299-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NAPA CA
2006-02-09 707-556-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C VALLEJO CA
2006-02-07 707-832-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 EUREKA CA
2006-02-06 707-242-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C PTLM SWIFT CA
2006-02-06 707-343-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C SONOMA CA
2006-02-06 707-563-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C VALLEJO CA
2006-02-06 707-637-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C NAPA CA
2006-02-06 707-673-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C FRFLD-SUIS CA
2006-02-06 707-742-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C BENICIA CA
2006-02-06 707-774-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C PTLM MAIN CA
2006-02-06 707-843-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C SANTA ROSA CA
2006-01-25 707-927-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NAPA CA
2006-01-20 707-535-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2006-01-20 707-537-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2006-01-20 707-540-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2006-01-20 707-540-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2006-01-20 707-540-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2006-01-20 707-543-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2006-01-20 707-547-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2006-01-20 707-569-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2006-01-20 707-569-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2006-01-20 707-639-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FRFLD-SUIS CA
2006-01-20 707-639-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FRFLD-SUIS CA
2006-01-20 707-703-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANTA ROSA CA
2006-01-18 707-685-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VACAVILLE CA
2006-01-18 707-685-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VACAVILLE CA
2006-01-10 707-673-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRFLD-SUIS CA
2006-01-10 707-673-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRFLD-SUIS CA
2005-12-27 707-886-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C ANNAPOLIS CA
2005-12-21 707-635-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 DIXON CA
2005-12-19 707-676-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DIXON CA
2005-12-16 707-294-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NAPA CA
2005-12-16 707-294-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NAPA CA
2005-12-13 707-232-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C TRINIDAD 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.