NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

25 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 820
ONVOY, LLC - CA 18
T-MOBILE USA, INC. 3
NEW CINGULAR WIRELESS PCS, LLC 2
TELNYX LLC 1
PEERLESS NETWORK OF CALIFORNIA, 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
2022-09-30 820-600-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PISMOBEACH CA
2022-07-28 820-386-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SIMIVALLEY CA
2022-07-28 820-386-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SIMIVALLEY CA
2022-07-28 820-386-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SIMIVALLEY CA
2022-07-28 820-386-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SIMIVALLEY CA
2022-07-28 820-386-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SIMIVALLEY CA
2022-07-25 820-432-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NEWBURYPRK CA
2022-07-25 820-432-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NEWBURYPRK CA
2022-07-25 820-432-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NEWBURYPRK CA
2022-07-25 820-432-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NEWBURYPRK CA
2022-07-25 820-432-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NEWBURYPRK CA
2022-07-15 820-386-0XXX 0000–0999Assigned TELNYX LLC 073H SIMIVALLEY CA
2022-06-29 820-208-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ATASCADERO CA
2022-06-29 820-208-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ATASCADERO CA
2022-06-20 820-786-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ATASCADERO CA
2022-06-08 820-212-2XXX 2000–2999Assigned BARR TELL USA, LLC 026K VNTRA EAST CA
2022-06-01 820-212-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA EAST CA
2022-06-01 820-212-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA EAST CA
2022-06-01 820-212-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA EAST CA
2022-06-01 820-212-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA EAST CA
2022-06-01 820-212-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA EAST CA
2022-06-01 820-212-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA EAST CA
2022-06-01 820-600-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PISMOBEACH CA
2022-05-31 820-288-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA EAST CA
2022-05-31 820-288-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA EAST CA
2022-05-31 820-288-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA EAST CA
2022-05-31 820-288-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA EAST CA
2022-05-31 820-288-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA EAST CA
2022-05-31 820-386-3XXX 3000–3999Assigned FRACTEL, LLC 965H SIMIVALLEY CA
2022-05-31 820-426-6XXX 6000–6999Assigned BARR TELL USA, LLC 026K CAMARILLO CA
2022-05-31 820-999-1XXX 1000–1999Assigned BARR TELL USA, LLC 026K OXNARD CA
2022-05-26 820-426-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CAMARILLO CA
2022-05-18 820-587-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H SANBARBARA CA
2022-05-18 820-587-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H SANBARBARA CA
2022-05-13 820-587-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2022-05-13 820-587-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2022-04-13 820-400-9XXX 9000–9999Assigned TWILIO INTERNATIONAL, INC. 506J PARKFIELD CA
2022-04-12 820-426-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2022-04-12 820-799-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2022-04-12 820-799-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2022-04-12 820-799-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2022-04-12 820-799-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2022-04-12 820-799-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2022-04-12 820-799-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2022-04-12 820-799-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2022-04-12 820-799-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2022-04-12 820-799-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2022-03-28 820-842-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OAKVIEW CA
2022-03-18 820-206-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PASOROBLES CA
2022-03-12 820-946-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTAMARIA 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.