NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

17 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2016-06-10 650-836-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PESCADERO CA
2016-06-10 650-836-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PESCADERO CA
2016-06-07 650-686-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MILLBRAE CA
2016-06-07 650-770-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LOS ALTOS CA
2016-06-07 650-770-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LOS ALTOS CA
2016-06-07 650-770-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LOS ALTOS CA
2016-06-07 650-770-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LOS ALTOS CA
2016-06-03 650-436-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2016-06-03 650-436-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2016-05-16 650-410-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SSNFRNCSCO CA
2016-05-16 650-410-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SSNFRNCSCO CA
2016-05-16 650-795-1XXX 1000–1999Assigned HD CARRIER LLC 321J LA HONDA CA
2016-05-16 650-795-2XXX 2000–2999Assigned HD CARRIER LLC 321J LA HONDA CA
2016-05-16 650-795-3XXX 3000–3999Assigned HD CARRIER LLC 321J LA HONDA CA
2016-05-16 650-795-4XXX 4000–4999Assigned HD CARRIER LLC 321J LA HONDA CA
2016-05-16 650-795-5XXX 5000–5999Assigned HD CARRIER LLC 321J LA HONDA CA
2016-05-11 650-260-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C REDWOOD CY CA
2016-05-09 650-538-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PESCADERO CA
2016-05-06 650-503-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L REDWOOD CY CA
2016-05-03 650-495-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2016-04-29 650-250-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-04-28 650-441-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2016-04-28 650-597-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J SNCRL-BLMT CA
2016-04-26 650-509-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2016-04-25 650-499-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2016-04-25 650-499-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2016-04-25 650-499-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2016-04-21 650-334-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2016-03-29 650-334-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-03-29 650-334-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-03-29 650-334-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-03-28 650-203-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C MT VIEW CA
2016-03-28 650-334-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2016-03-28 650-334-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2016-03-28 650-334-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2016-03-28 650-431-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SAN MATEO CA
2016-03-28 650-435-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SAN MATEO CA
2016-03-28 650-435-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SAN MATEO CA
2016-03-28 650-689-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C MILLBRAE CA
2016-03-28 650-689-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C MILLBRAE CA
2016-03-25 650-750-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C HALFMOONBY CA
2016-03-25 650-750-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C HALFMOONBY CA
2016-03-25 650-770-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C LOS ALTOS CA
2016-03-25 650-770-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C LOS ALTOS CA
2016-03-25 650-770-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C LOS ALTOS CA
2016-03-17 650-334-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2016-03-17 650-334-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2016-03-17 650-550-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SNFC JUNPR CA
2016-03-17 650-758-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C SNFC JUNPR CA
2016-03-16 650-436-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.