NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

25 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 19
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
2006-07-13 650-722-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDWOOD CY CA
2006-07-13 650-722-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDWOOD CY CA
2006-07-06 650-353-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2006-06-15 650-461-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2006-06-13 650-641-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MT VIEW CA
2006-06-09 650-384-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C PALO ALTO CA
2006-06-09 650-388-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2006-06-09 650-393-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2006-06-09 650-393-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2006-06-02 650-294-4XXX 4000–4999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SAN MATEO CA
2006-06-02 650-388-5XXX 5000–5999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 PALO ALTO CA
2006-06-02 650-542-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 REDWOOD CY CA
2006-06-02 650-550-5XXX 5000–5999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SNFC JUNPR CA
2006-06-02 650-557-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 PACIFICA CA
2006-06-02 650-632-8XXX 8000–8999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SNCRL-BLMT CA
2006-06-02 650-718-3XXX 3000–3999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 MOSS BEACH CA
2006-06-02 650-729-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 HALFMOONBY CA
2006-06-02 650-747-5XXX 5000–5999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 LA HONDA CA
2006-06-02 650-777-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 MILLBRAE CA
2006-06-02 650-850-3XXX 3000–3999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 WOODSIDE CA
2006-05-26 650-989-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2006-05-26 650-989-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2006-05-16 650-209-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LOS ALTOS CA
2006-05-16 650-315-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C SAN MATEO CA
2006-05-16 650-636-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C SSNFRNCSCO CA
2006-05-12 650-636-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SSNFRNCSCO CA
2006-05-12 650-636-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SSNFRNCSCO CA
2006-05-09 650-534-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2006-05-05 650-521-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2006-05-05 650-521-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2006-05-05 650-521-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2006-05-05 650-521-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2006-04-14 650-455-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MILLBRAE CA
2006-04-14 650-534-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2006-04-07 650-440-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2006-04-05 650-228-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SSNFRNCSCO CA
2006-04-03 650-879-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 PESCADERO CA
2006-03-13 650-793-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2006-03-13 650-930-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2006-03-10 650-231-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C MILLBRAE CA
2006-03-10 650-264-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C SNCRL-BLMT CA
2006-03-10 650-282-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C MT VIEW CA
2006-03-10 650-290-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C PACIFICA CA
2006-02-28 650-204-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MILLBRAE CA
2006-02-28 650-777-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MILLBRAE CA
2006-02-10 650-899-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C LA HONDA CA
2006-02-10 650-963-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2006-02-03 650-215-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2006-02-03 650-215-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2006-02-02 650-396-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MT VIEW 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.