NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

22 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 559
NEW CINGULAR WIRELESS PCS, LLC 4
HD CARRIER LLC 4
EXIANT COMMUNICATIONS LLC 4
BANDWIDTH.COM CLEC, LLC - CA 4
OPENTACT INC. 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
2021-08-27 559-946-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-08-27 559-946-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-08-27 559-946-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-08-25 559-249-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ORANGECOVE CA
2021-08-25 559-295-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F COALINGA CA
2021-08-25 559-463-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F STRATFORD CA
2021-08-25 559-482-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BURREL CA
2021-08-25 559-601-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CARUTHERS CA
2021-08-25 559-694-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F FIREBAUGH CA
2021-08-25 559-966-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SPRINGVL CA
2021-08-23 559-944-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRESNO CA
2021-08-23 559-944-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRESNO CA
2021-08-23 559-944-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRESNO CA
2021-07-29 559-406-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DINUBA CA
2021-07-29 559-510-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TULARE CA
2021-07-29 559-510-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TULARE CA
2021-07-29 559-619-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-29 559-619-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-29 559-619-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-29 559-619-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-29 559-619-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-29 559-619-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-29 559-619-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-29 559-619-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-29 559-619-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-29 559-619-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-27 559-523-8XXX 8000–8999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 PIXLEY CA
2021-07-27 559-699-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-27 559-699-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-27 559-699-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-27 559-946-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-27 559-946-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-27 559-946-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-27 559-946-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-27 559-946-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2021-07-20 559-220-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LEMOORE CA
2021-07-16 559-238-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C KINGSBURG CA
2021-07-16 559-314-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C CLOVIS CA
2021-07-16 559-390-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C ALPAUGH CA
2021-07-16 559-401-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C AVENAL CA
2021-07-16 559-401-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C AVENAL CA
2021-07-16 559-402-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BURREL CA
2021-07-16 559-402-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BURREL CA
2021-07-16 559-418-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C HURON CA
2021-07-16 559-427-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C PIXLEY CA
2021-07-16 559-465-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C THREERIVRS CA
2021-07-16 559-491-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C HANFORD CA
2021-07-16 559-491-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C HANFORD CA
2021-07-16 559-521-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C DEL REY CA
2021-07-16 559-529-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C TIPTON 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.