NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2005-02-23 707-987-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MIDDLETOWN CA
2005-02-18 707-232-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C TRINIDAD CA
2005-02-18 707-282-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C KENWOOD CA
2005-02-18 707-383-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C GARBERVL CA
2005-02-18 707-394-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C GUERNEVL CA
2005-02-18 707-674-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 VALLEJO CA
2005-02-18 707-703-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTA ROSA CA
2005-02-17 707-527-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SANTA ROSA CA
2005-02-17 707-622-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C TMCV SERN CA
2005-02-17 707-657-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C WINDSOR CA
2005-02-17 707-682-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C FORTUNA CA
2005-02-16 707-416-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FRFLD-SUIS CA
2005-02-15 707-238-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PTLM SWIFT CA
2005-01-28 707-206-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SANTA ROSA CA
2005-01-27 707-400-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BENICIA CA
2005-01-26 707-260-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NAPA CA
2005-01-26 707-260-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NAPA CA
2005-01-21 707-531-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 YOUNTVILLE CA
2005-01-21 707-879-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 TOMALES CA
2005-01-14 707-277-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C KELSEYVL CA
2005-01-14 707-277-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C KELSEYVL CA
2005-01-14 707-277-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C KELSEYVL CA
2005-01-12 707-490-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2005-01-12 707-490-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2005-01-12 707-490-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2005-01-12 707-490-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2005-01-12 707-735-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C GEYSERVL CA
2005-01-12 707-735-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C GEYSERVL CA
2005-01-07 707-474-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 VACAVILLE CA
2005-01-06 707-931-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SONOMA CA
2005-01-04 707-832-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2004-12-28 707-361-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BENICIA CA
2004-12-28 707-927-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NAPA CA
2004-12-28 707-927-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NAPA CA
2004-12-21 707-289-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C KELSEYVL CA
2004-12-17 707-734-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT BRAGG CA
2004-12-17 707-734-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C FORT BRAGG CA
2004-12-14 707-361-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BENICIA CA
2004-12-13 707-416-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FRFLD-SUIS CA
2004-12-03 707-672-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EUREKA CA
2004-12-03 707-672-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EUREKA CA
2004-12-02 707-234-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 UKIAH CA
2004-12-02 707-241-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTLM MAIN CA
2004-12-02 707-244-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ST HELENA CA
2004-12-02 707-327-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SANTA ROSA CA
2004-12-02 707-384-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FRFLD-SUIS CA
2004-12-02 707-737-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CALISTOGA CA
2004-12-02 707-927-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NAPA CA
2004-11-22 707-616-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2004-11-12 707-254-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NAPA CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.