NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

24 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 747
ONVOY, LLC - CA 12
EXIANT COMMUNICATIONS LLC 5
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2
NEW CINGULAR WIRELESS PCS, LLC 2
BANDWIDTH.COM CLEC, LLC - CA 2
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
2019-03-28 747-277-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C NO HOLLYWD CA
2019-03-28 747-389-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C NO HOLLYWD CA
2019-03-26 747-244-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NORTHRIDGE CA
2019-03-19 747-210-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2019-03-19 747-281-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFN PACM CA
2019-02-14 747-208-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2019-02-14 747-389-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D NO HOLLYWD CA
2019-02-14 747-755-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D NORTHRIDGE CA
2019-02-06 747-252-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SNFN GRHL CA
2019-02-06 747-281-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SNFN PACM CA
2019-02-06 747-281-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SNFN PACM CA
2019-02-06 747-281-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SNFN PACM CA
2019-02-06 747-281-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SNFN PACM CA
2019-02-06 747-755-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C NORTHRIDGE CA
2019-02-06 747-755-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C NORTHRIDGE CA
2019-02-06 747-755-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C NORTHRIDGE CA
2019-02-06 747-755-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C NORTHRIDGE CA
2019-02-05 747-223-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2019-02-05 747-223-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2019-02-01 747-285-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SUNLD TJNG CA
2019-02-01 747-285-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SUNLD TJNG CA
2019-02-01 747-286-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C GLENDALE CA
2019-02-01 747-286-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C GLENDALE CA
2019-02-01 747-286-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C GLENDALE CA
2019-02-01 747-286-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C GLENDALE CA
2019-01-31 747-287-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RESEDA CA
2019-01-31 747-290-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-290-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-290-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-290-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-290-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-290-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-290-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-290-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-290-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-290-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-312-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-312-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-312-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-312-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-312-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-312-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-312-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-312-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-312-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-312-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-29 747-286-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2019-01-22 747-286-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D GLENDALE CA
2019-01-10 747-270-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GLENDALE CA
2019-01-07 747-755-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NORTHRIDGE 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.