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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2007-05-15 650-810-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2007-05-08 650-336-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2007-05-08 650-336-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2007-05-04 650-440-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HALFMOONBY CA
2007-05-04 650-451-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PACIFICA CA
2007-05-04 650-487-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LA HONDA CA
2007-05-04 650-535-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MOSS BEACH CA
2007-05-02 650-362-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 REDWOOD CY CA
2007-05-02 650-720-0XXX 0000–0999Assigned METROPCS, INC. 5562 HALFMOONBY CA
2007-04-30 650-393-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN MATEO CA
2007-04-30 650-393-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN MATEO CA
2007-04-16 650-931-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2007-04-11 650-388-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2007-04-10 650-239-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C MILLBRAE CA
2007-04-10 650-260-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C REDWOOD CY CA
2007-04-10 650-288-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SAN MATEO CA
2007-04-10 650-305-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LOS ALTOS CA
2007-04-10 650-336-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C MT VIEW CA
2007-04-10 650-391-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2007-04-10 650-392-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SSNFRNCSCO CA
2007-04-10 650-610-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SNCRL-BLMT CA
2007-04-06 650-644-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2007-04-06 650-644-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2007-04-06 650-644-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2007-04-06 650-644-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2007-04-06 650-644-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2007-03-14 650-557-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PACIFICA CA
2007-03-13 650-897-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MOSS BEACH CA
2007-03-07 650-931-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN MATEO CA
2007-02-28 650-284-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2007-02-16 650-993-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNFC JUNPR CA
2007-02-15 650-214-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 MT VIEW CA
2007-02-15 650-214-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 MT VIEW CA
2007-02-15 650-214-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 MT VIEW CA
2007-02-15 650-214-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 MT VIEW CA
2007-02-15 650-214-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 MT VIEW CA
2007-02-15 650-214-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 MT VIEW CA
2007-02-15 650-214-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 MT VIEW CA
2007-02-15 650-214-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 MT VIEW CA
2007-02-15 650-214-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 MT VIEW CA
2007-02-15 650-214-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 MT VIEW CA
2007-02-14 650-645-1XXX 1000–1999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SAN MATEO CA
2007-02-14 650-645-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SAN MATEO CA
2007-02-14 650-645-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SAN MATEO CA
2007-02-14 650-645-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SAN MATEO CA
2007-02-13 650-416-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SSNFRNCSCO CA
2007-02-09 650-644-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2007-02-07 650-832-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNCRL-BLMT CA
2007-01-22 650-963-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L MT VIEW CA
2007-01-16 650-810-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 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.