NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

15 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 279
T-MOBILE USA, INC. 7
EXIANT COMMUNICATIONS LLC 3
NEW CINGULAR WIRELESS PCS, LLC 2
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 1
PAETEC ITEL, LLC 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
2021-10-26 279-214-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H FAIR OAKS CA
2021-10-25 279-213-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H LINCOLN CA
2021-10-25 279-213-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H LINCOLN CA
2021-10-25 279-732-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2021-10-25 279-732-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2021-10-25 279-732-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2021-10-25 279-732-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2021-10-25 279-732-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2021-10-18 279-842-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FOLSOM CA
2021-10-14 279-212-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H MICHIGNBAR CA
2021-10-14 279-212-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H MICHIGNBAR CA
2021-10-13 279-207-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H ELK GROVE CA
2021-10-13 279-207-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H ELK GROVE CA
2021-10-13 279-207-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H ELK GROVE CA
2021-10-13 279-207-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H ELK GROVE CA
2021-10-08 279-213-2XXX 2000–2999Assigned TELNYX LLC 073H LINCOLN CA
2021-10-08 279-214-2XXX 2000–2999Assigned TELNYX LLC 073H FAIR OAKS CA
2021-10-01 279-212-8XXX 8000–8999Assigned CSC WIRELESS, LLC 425J MICHIGNBAR CA
2021-10-01 279-213-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LINCOLN CA
2021-10-01 279-213-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LINCOLN CA
2021-10-01 279-214-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FAIR OAKS CA
2021-10-01 279-214-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FAIR OAKS CA
2021-10-01 279-977-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2021-10-01 279-977-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2021-10-01 279-977-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2021-09-24 279-209-0XXX 0000–0999Assigned SKYE TELECOM LLC DBA SKYETEL 622J ELK GROVE CA
2021-09-24 279-210-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2021-09-24 279-210-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2021-09-24 279-210-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2021-09-24 279-210-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2021-09-15 279-977-7XXX 7000–7999Assigned FRACTEL, LLC 965H RSVL MAIN CA
2021-09-13 279-210-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM MAIN CA
2021-09-13 279-210-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM MAIN CA
2021-09-09 279-210-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SCRM MAIN CA
2021-09-08 279-209-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ELK GROVE CA
2021-09-08 279-499-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2021-09-08 279-499-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2021-09-08 279-499-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2021-09-08 279-499-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2021-09-08 279-587-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C PLEASATGRV CA
2021-09-08 279-899-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C COURTLAND CA
2021-09-01 279-322-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F WALNUT GRV CA
2021-08-31 279-210-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2021-08-31 279-210-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2021-08-31 279-499-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM NORTH CA
2021-08-27 279-348-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2021-08-27 279-348-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2021-08-27 279-348-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2021-08-27 279-587-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PLEASATGRV CA
2021-08-27 279-786-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM 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.