NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

49 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 464
NEW CINGULAR WIRELESS PCS, LLC - IL 43
ONVOY, LLC 4
OPENTACT INC. 1
INTRADO COMMUNICATIONS, LLC 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
2022-05-12 464-204-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-05-12 464-204-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-05-12 464-204-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-05-12 464-204-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-05-12 464-204-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-05-12 464-204-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-04-26 464-927-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-04-26 464-927-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-04-26 464-927-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-04-26 464-927-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-03-24 464-567-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 HARVEY IL
2022-03-22 464-263-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J OAK FOR SO IL
2022-03-17 464-201-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2022-03-17 464-201-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2022-03-17 464-201-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2022-03-17 464-201-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2022-03-17 464-201-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2022-03-17 464-203-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2022-03-17 464-203-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2022-03-17 464-203-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2022-03-15 464-205-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALOS PARK IL
2022-03-15 464-205-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALOS PARK IL
2022-03-15 464-205-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALOS PARK IL
2022-03-15 464-205-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALOS PARK IL
2022-03-15 464-205-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALOS PARK IL
2022-03-15 464-205-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALOS PARK IL
2022-03-15 464-205-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALOS PARK IL
2022-03-15 464-205-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALOS PARK IL
2022-03-15 464-205-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALOS PARK IL
2022-03-15 464-205-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALOS PARK IL
2022-03-14 464-646-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J PALOS PARK IL
2022-03-10 464-927-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-03-10 464-927-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-03-10 464-927-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-03-10 464-927-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-03-10 464-927-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-03-09 464-345-6XXX 6000–6999Assigned FRACTEL, LLC 965H LA GRANGE IL
2022-03-09 464-529-3XXX 3000–3999Assigned FRACTEL, LLC 965H CHICAGOHTS IL
2022-03-09 464-529-9XXX 9000–9999Assigned FRACTEL, LLC 965H CHICAGOHTS IL
2022-03-04 464-444-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J BEECHER IL
2022-03-01 464-333-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J HARVEY IL
2022-03-01 464-777-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J WILLOW SPG IL
2022-03-01 464-999-5XXX 5000–5999Assigned TON80 COMMUNICATIONS, LLC 516J THORNTON IL
2022-02-01 464-768-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J CHICAGOHTS IL
2022-01-31 464-733-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J BLUEISLAND IL
2022-01-28 464-777-9XXX 9000–9999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E WILLOW SPG IL
2022-01-25 464-927-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J CICERO IL
2022-01-24 464-300-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-01-24 464-300-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2022-01-24 464-300-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.