NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

35 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 925
ONVOY, LLC - CA 24
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 5
BANDWIDTH.COM CLEC, LLC - CA 2
TELNYX LLC 1
T-MOBILE USA, INC. 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
2006-08-04 925-835-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SUNOL CA
2006-07-25 925-478-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 WALNUT CRK CA
2006-07-13 925-719-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DUBLN-SNRM CA
2006-07-13 925-813-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANTIOCH CA
2006-07-07 925-234-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2006-07-05 925-223-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PLEASANTON CA
2006-06-26 925-852-8XXX 8000–8999Assigned METROPCS, INC. 5562 CONCORD CA
2006-06-21 925-257-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C ORINDA CA
2006-06-13 925-978-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C ANTIOCH CA
2006-06-09 925-425-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C PLEASANTON CA
2006-06-09 925-822-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C CONCORD CA
2006-06-09 925-852-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2006-06-08 925-415-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C BSHP RNCH CA
2006-06-07 925-817-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALNUT CRK CA
2006-06-07 925-817-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALNUT CRK CA
2006-06-07 925-817-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALNUT CRK CA
2006-05-31 925-852-9XXX 9000–9999Assigned METROPCS, INC. 5562 CONCORD CA
2006-05-26 925-949-3XXX 3000–3999Assigned METROPCS, INC. 5562 WALNUT CRK CA
2006-05-18 925-272-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 DANVILLE CA
2006-05-16 925-470-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ANTIOCH CA
2006-05-16 925-470-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ANTIOCH CA
2006-05-16 925-476-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C WALNUT CRK CA
2006-05-10 925-247-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 MORAGA CA
2006-05-10 925-252-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 PITTSBURG CA
2006-05-10 925-255-4XXX 4000–4999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 ORINDA CA
2006-05-10 925-261-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 PSBG WEST CA
2006-05-10 925-271-3XXX 3000–3999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 PLEASANTON CA
2006-05-10 925-282-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 LAFAYETTE CA
2006-05-10 925-359-4XXX 4000–4999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 BSHP RNCH CA
2006-05-10 925-374-3XXX 3000–3999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 MARTINEZ CA
2006-05-10 925-453-5XXX 5000–5999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 LIVERMORE CA
2006-05-10 925-551-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 DUBLN-SNRM CA
2006-05-10 925-673-4XXX 4000–4999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 CLAYTON CA
2006-05-10 925-677-1XXX 1000–1999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 CONCORD CA
2006-05-10 925-684-5XXX 5000–5999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 ECONTRCOST CA
2006-05-10 925-752-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 ANTIOCH CA
2006-05-10 925-854-3XXX 3000–3999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 DANVILLE CA
2006-05-10 925-948-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 WALNUT CRK CA
2006-05-05 925-658-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WALNUT CRK CA
2006-05-03 925-659-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BSHP RNCH CA
2006-05-03 925-949-6XXX 6000–6999Assigned METROPCS, INC. 5562 WALNUT CRK CA
2006-04-21 925-558-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DUBLN-SNRM CA
2006-04-11 925-267-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C PITTSBURG CA
2006-04-11 925-304-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C CLAYTON CA
2006-03-24 925-395-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2006-03-13 925-965-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 PLEASANTON CA
2006-03-10 925-230-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C DUBLN-SNRM CA
2006-03-10 925-392-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C ECONTRCOST CA
2006-03-08 925-219-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2006-03-02 925-470-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ANTIOCH 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.