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
2019-08-07 707-438-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C FRFLD-SUIS CA
2019-08-07 707-438-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C FRFLD-SUIS CA
2019-08-06 707-748-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 BENICIA CA
2019-08-05 707-309-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SONOMA CA
2019-08-05 707-457-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CRESCENTCY CA
2019-08-01 707-309-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SONOMA CA
2019-08-01 707-663-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F TMCV TMCV CA
2019-07-31 707-209-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F VALLEJO CA
2019-07-30 707-607-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C FERNDALE CA
2019-07-15 707-432-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRFLD-SUIS CA
2019-07-12 707-830-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HOPLAND CA
2019-07-12 707-920-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 FRFLD-SUIS CA
2019-07-05 707-801-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L KENWOOD CA
2019-06-24 707-309-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SONOMA CA
2019-06-17 707-719-7XXX 7000–7999Assigned CSC WIRELESS, LLC 425J BLUE LAKE CA
2019-06-17 707-719-8XXX 8000–8999Assigned CSC WIRELESS, LLC 425J BLUE LAKE CA
2019-06-05 707-309-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SONOMA CA
2019-06-04 707-873-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OCCIDENTAL CA
2019-06-04 707-873-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OCCIDENTAL CA
2019-05-28 707-713-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ARCATA CA
2019-05-24 707-714-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 UKIAH CA
2019-05-23 707-209-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F VALLEJO CA
2019-05-22 707-278-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F KELSEYVL CA
2019-05-22 707-381-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F GEYSERVL CA
2019-05-22 707-844-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BLUE LAKE CA
2019-05-15 707-284-7XXX 7000–7999Assigned SONIC TELECOM, LLC - CA 433E SANTA ROSA CA
2019-05-15 707-522-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SANTA ROSA CA
2019-05-15 707-615-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SANTA ROSA CA
2019-05-15 707-615-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SANTA ROSA CA
2019-05-15 707-615-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SANTA ROSA CA
2019-05-15 707-615-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SANTA ROSA CA
2019-05-15 707-981-5XXX 5000–5999Assigned SONIC TELECOM, LLC - CA 433E PTLM MAIN CA
2019-05-10 707-756-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HEALDSBURG CA
2019-05-06 707-530-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LAKEPORT CA
2019-04-30 707-504-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OCCIDENTAL CA
2019-04-30 707-504-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OCCIDENTAL CA
2019-04-30 707-741-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BENICIA CA
2019-04-15 707-740-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2019-04-12 707-256-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NAPA CA
2019-04-12 707-740-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F EUREKA CA
2019-04-11 707-503-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SEBASTOPOL CA
2019-04-11 707-661-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CALISTOGA CA
2019-04-09 707-312-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 YOUNTVILLE CA
2019-04-02 707-796-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PTLM SWIFT CA
2019-04-01 707-719-2XXX 2000–2999Assigned CSC WIRELESS, LLC 425J BLUE LAKE CA
2019-03-20 707-855-5XXX 5000–5999Assigned FRACTEL, LLC 965H POTTER VLY CA
2019-03-20 707-899-9XXX 9000–9999Assigned FRACTEL, LLC 965H SANTA ROSA CA
2019-03-18 707-801-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L KENWOOD CA
2019-03-18 707-801-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L KENWOOD CA
2019-03-14 707-316-0XXX 0000–0999Assigned METROPCS, INC. 5562 DIXON 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.