NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

17 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 650
ONVOY, LLC - CA 11
T-MOBILE USA, INC. 4
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
2006-01-25 650-534-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2006-01-25 650-534-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2006-01-24 650-455-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MILLBRAE CA
2006-01-24 650-862-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2006-01-24 650-862-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2006-01-20 650-669-5XXX 5000–5999Assigned METROPCS, INC. 5562 MT VIEW CA
2006-01-20 650-669-6XXX 6000–6999Assigned METROPCS, INC. 5562 MT VIEW CA
2006-01-13 650-240-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2006-01-09 650-490-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MILLBRAE CA
2005-12-21 650-452-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2005-12-21 650-452-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2005-12-21 650-452-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2005-12-19 650-862-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2005-12-19 650-862-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2005-12-13 650-332-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 WOODSIDE CA
2005-12-13 650-456-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C PESCADERO CA
2005-12-13 650-887-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LOS ALTOS CA
2005-12-13 650-899-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LA HONDA CA
2005-12-07 650-206-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 WOODSIDE CA
2005-12-07 650-290-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PACIFICA CA
2005-12-07 650-290-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PACIFICA CA
2005-12-05 650-391-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2005-11-16 650-206-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 WOODSIDE CA
2005-11-14 650-560-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 HALFMOONBY CA
2005-11-11 650-862-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2005-11-11 650-862-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2005-11-10 650-242-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2005-11-10 650-273-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2005-11-10 650-273-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2005-11-10 650-288-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2005-11-10 650-351-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2005-11-10 650-352-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2005-11-10 650-353-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2005-11-10 650-353-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2005-11-10 650-815-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2005-11-08 650-243-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SSNFRNCSCO CA
2005-11-01 650-452-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2005-10-28 650-209-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LOS ALTOS CA
2005-10-20 650-940-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 MT VIEW CA
2005-10-19 650-226-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNCRL-BLMT CA
2005-10-19 650-264-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNCRL-BLMT CA
2005-10-14 650-492-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 LOS ALTOS CA
2005-10-12 650-679-0XXX 0000–0999Assigned METROPCS, INC. 5562 REDWOOD CY CA
2005-10-12 650-679-1XXX 1000–1999Assigned METROPCS, INC. 5562 REDWOOD CY CA
2005-10-12 650-679-2XXX 2000–2999Assigned METROPCS, INC. 5562 REDWOOD CY CA
2005-10-12 650-679-3XXX 3000–3999Assigned METROPCS, INC. 5562 REDWOOD CY CA
2005-10-12 650-679-4XXX 4000–4999Assigned METROPCS, INC. 5562 REDWOOD CY CA
2005-10-12 650-679-5XXX 5000–5999Assigned METROPCS, INC. 5562 REDWOOD CY CA
2005-10-10 650-215-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2005-10-07 650-332-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WOODSIDE 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.