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
2013-06-20 650-422-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2013-06-20 650-539-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2013-06-20 650-826-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2013-06-18 650-274-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN MATEO CA
2013-06-17 650-713-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HALFMOONBY CA
2013-06-17 650-784-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SSNFRNCSCO CA
2013-06-17 650-837-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SSNFRNCSCO CA
2013-06-12 650-889-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2013-06-11 650-469-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LOS ALTOS CA
2013-06-10 650-422-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2013-06-03 650-396-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MT VIEW CA
2013-05-28 650-397-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LOS ALTOS CA
2013-05-28 650-422-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2013-05-28 650-422-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2013-05-28 650-560-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 HALFMOONBY CA
2013-05-28 650-581-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2013-05-28 650-642-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2013-05-28 650-666-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PALO ALTO CA
2013-05-28 650-825-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2013-05-24 650-422-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2013-05-23 650-300-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2013-05-23 650-389-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SAN MATEO CA
2013-05-23 650-453-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SNCRL-BLMT CA
2013-05-23 650-482-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J REDWOOD CY CA
2013-05-23 650-526-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MT VIEW CA
2013-05-23 650-666-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2013-05-23 650-825-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SSNFRNCSCO CA
2013-05-13 650-294-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2013-04-19 650-422-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2013-04-19 650-422-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2013-04-16 650-562-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L REDWOOD CY CA
2013-04-08 650-235-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C SAN MATEO CA
2013-04-03 650-713-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2013-03-27 650-669-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2013-03-27 650-943-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2013-03-25 650-666-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2013-03-22 650-238-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SSNFRNCSCO CA
2013-03-22 650-243-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SSNFRNCSCO CA
2013-03-22 650-446-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F WOODSIDE CA
2013-03-22 650-446-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F WOODSIDE CA
2013-03-22 650-666-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2013-03-14 650-281-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN MATEO CA
2013-03-14 650-281-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN MATEO CA
2013-03-14 650-481-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F REDWOOD CY CA
2013-03-14 650-481-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F REDWOOD CY CA
2013-03-14 650-538-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PESCADERO CA
2013-03-14 650-538-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PESCADERO CA
2013-03-14 650-597-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNCRL-BLMT CA
2013-03-14 650-597-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNCRL-BLMT CA
2013-03-14 650-666-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PALO ALTO 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.