NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

34 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 442
NEW CINGULAR WIRELESS PCS, LLC 14
ONVOY, LLC - CA 10
HD CARRIER LLC 4
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2016-12-12 442-268-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PALM SPG CA
2016-12-06 442-212-1XXX 1000–1999Assigned TELNYX LLC 073H PALM SPG CA
2016-11-28 442-295-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BARSTOW CA
2016-11-28 442-297-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2016-11-21 442-278-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VALLEY CTR CA
2016-11-21 442-936-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WRWD PHLN CA
2016-11-16 442-230-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2016-11-16 442-297-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EL CENTRO CA
2016-11-15 442-201-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LEE VINING CA
2016-11-03 442-327-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2016-11-03 442-327-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2016-11-03 442-327-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2016-10-28 442-296-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C CROWLEY LK CA
2016-10-28 442-298-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C TRONA CA
2016-10-26 442-269-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 JOSHUATREE CA
2016-10-25 442-294-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C RIDGECREST CA
2016-10-20 442-297-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2016-10-20 442-297-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2016-10-20 442-325-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L OCSD CRLS CA
2016-10-12 442-210-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BIG PINE CA
2016-10-11 442-230-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2016-10-11 442-230-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2016-10-07 442-273-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C VISTA CA
2016-10-07 442-291-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C VISTA CA
2016-10-07 442-291-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C VISTA CA
2016-10-05 442-295-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BARSTOW CA
2016-09-30 442-294-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RIDGECREST CA
2016-09-22 442-295-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K BARSTOW CA
2016-09-21 442-297-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2016-09-15 442-258-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2016-09-15 442-271-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2016-09-15 442-285-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CALIFORNCY CA
2016-09-14 442-256-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D INDIO CA
2016-09-13 442-268-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PALM SPG CA
2016-09-13 442-286-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ESCONDIDO CA
2016-09-13 442-286-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ESCONDIDO CA
2016-08-29 442-285-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CALIFORNCY CA
2016-08-29 442-287-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7147 OCSD CRLS CA
2016-08-24 442-278-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 VALLEY CTR CA
2016-08-23 442-207-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FALLBROOK CA
2016-08-23 442-207-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FALLBROOK CA
2016-08-23 442-243-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2016-08-23 442-327-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2016-08-23 442-327-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2016-08-22 442-208-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CALIPATRIA CA
2016-08-22 442-267-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VTVL HSPR CA
2016-08-22 442-278-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VALLEY CTR CA
2016-08-22 442-287-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OCSD CRLS CA
2016-08-18 442-233-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LENWOOD CA
2016-08-18 442-263-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PAUMA VLY 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.