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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2015-07-01 650-785-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2015-06-30 650-460-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2015-06-30 650-460-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2015-06-30 650-587-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDWOOD CY CA
2015-06-30 650-781-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2015-06-30 650-850-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WOODSIDE CA
2015-06-23 650-695-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2015-06-23 650-781-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN MATEO CA
2015-06-10 650-785-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2015-06-10 650-822-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SSNFRNCSCO CA
2015-06-10 650-850-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WOODSIDE CA
2015-06-09 650-822-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SSNFRNCSCO CA
2015-06-08 650-537-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2015-05-22 650-686-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L MILLBRAE CA
2015-05-14 650-435-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN MATEO CA
2015-04-28 650-656-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2015-04-28 650-656-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2015-04-22 650-822-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2015-04-22 650-822-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2015-04-20 650-435-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2015-04-09 650-735-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PACIFICA CA
2015-04-08 650-660-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2015-04-08 650-660-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2015-04-08 650-785-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2015-04-08 650-785-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2015-04-01 650-695-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2015-04-01 650-695-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2015-03-26 650-822-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C SSNFRNCSCO CA
2015-03-26 650-822-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SSNFRNCSCO CA
2015-03-20 650-779-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J REDWOOD CY CA
2015-03-13 650-660-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2015-03-06 650-850-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L WOODSIDE CA
2015-03-05 650-686-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MILLBRAE CA
2015-03-05 650-686-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MILLBRAE CA
2015-03-05 650-686-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MILLBRAE CA
2015-02-27 650-683-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WOODSIDE CA
2015-02-26 650-435-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN MATEO CA
2015-02-24 650-826-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SSNFRNCSCO CA
2015-02-16 650-435-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2015-02-16 650-435-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2015-02-16 650-435-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2015-02-16 650-435-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2015-02-10 650-779-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDWOOD CY CA
2015-02-09 650-305-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LOS ALTOS CA
2015-02-09 650-305-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LOS ALTOS CA
2015-02-04 650-695-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L MT VIEW CA
2015-01-30 650-695-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2015-01-21 650-297-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PESCADERO CA
2015-01-21 650-449-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2015-01-21 650-466-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR 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.