NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

4 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 707
ONVOY, LLC - CA 2
NEW CINGULAR WIRELESS PCS, LLC 1
BANDWIDTH.COM CLEC, LLC - CA 1
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
2017-01-11 707-880-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VACAVILLE CA
2017-01-11 707-992-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PTLM SWIFT CA
2017-01-05 707-305-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 VACAVILLE CA
2016-12-27 707-790-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PTLM MAIN CA
2016-12-08 707-357-8XXX 8000–8999Assigned UNITED STATES CELLULAR - CA 6261 FORT BRAGG CA
2016-12-08 707-971-1XXX 1000–1999Assigned METROPCS, INC. 5562 PTLM MAIN CA
2016-11-22 707-683-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 EUREKA CA
2016-11-22 707-806-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ROSA CA
2016-11-22 707-867-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ROSA CA
2016-11-22 707-867-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ROSA CA
2016-11-16 707-715-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C COBB MT CA
2016-11-15 707-215-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HYDESVILLE CA
2016-11-15 707-683-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F EUREKA CA
2016-11-14 707-345-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J ST HELENA CA
2016-11-14 707-381-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J GEYSERVL CA
2016-11-14 707-395-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J HEALDSBURG CA
2016-11-11 707-716-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FRFLD-SUIS CA
2016-11-10 707-819-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NAPA CA
2016-11-07 707-741-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BENICIA CA
2016-11-01 707-743-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J POTTER VLY CA
2016-11-01 707-841-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 WILLITS CA
2016-10-31 707-218-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CRESCENTCY CA
2016-10-27 707-518-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WILLITS CA
2016-10-27 707-961-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FORT BRAGG CA
2016-10-26 707-305-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VACAVILLE CA
2016-10-21 707-710-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SANTA ROSA CA
2016-10-21 707-710-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SANTA ROSA CA
2016-10-21 707-710-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SANTA ROSA CA
2016-10-14 707-714-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 UKIAH CA
2016-10-05 707-559-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PTLM MAIN CA
2016-10-05 707-779-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PTLM MAIN CA
2016-09-15 707-308-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SANTA ROSA CA
2016-09-15 707-683-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUREKA CA
2016-09-15 707-955-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HEALDSBURG CA
2016-09-14 707-979-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MENDOCINO CA
2016-09-13 707-305-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VACAVILLE CA
2016-09-13 707-308-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ROSA CA
2016-09-13 707-710-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SANTA ROSA CA
2016-09-13 707-710-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SANTA ROSA CA
2016-09-13 707-790-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PTLM MAIN CA
2016-09-08 707-819-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NAPA CA
2016-08-30 707-244-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ST HELENA CA
2016-08-30 707-305-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F VACAVILLE CA
2016-08-30 707-308-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SANTA ROSA CA
2016-08-29 707-210-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SONOMA CA
2016-08-26 707-819-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NAPA CA
2016-08-26 707-835-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PTLM MAIN CA
2016-08-25 707-210-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SONOMA CA
2016-08-24 707-716-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 FRFLD-SUIS CA
2016-08-24 707-716-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FRFLD-SUIS 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.