NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

49 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 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
2026-07-22 464-277-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SUMMIT IL
2026-07-22 464-277-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SUMMIT IL
2026-07-22 464-277-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SUMMIT IL
2026-06-24 464-287-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E OAK FOR SO IL
2026-06-16 464-258-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CICERO IL
2026-06-16 464-259-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CICERO IL
2026-06-15 464-280-8XXX 8000–8999Assigned METROPCS, INC. 5562 ORLAND IL
2026-06-15 464-284-8XXX 8000–8999Assigned METROPCS, INC. 5562 CHICAGOHTS IL
2026-06-15 464-567-5XXX 5000–5999Assigned METROPCS, INC. 5562 HARVEY IL
2026-06-05 464-270-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2026-06-05 464-270-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2026-05-18 464-223-3XXX 3000–3999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E PEOTONE IL
2026-05-06 464-277-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SUMMIT IL
2026-05-06 464-277-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SUMMIT IL
2026-05-06 464-277-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SUMMIT IL
2026-05-06 464-285-0XXX 0000–0999Assigned ONVOY, LLC 224C FOREST IL
2026-04-16 464-220-5XXX 5000–5999Assigned ONVOY, LLC 224C CRETE IL
2026-04-16 464-259-2XXX 2000–2999Assigned ONVOY, LLC 224C CICERO IL
2026-04-16 464-259-3XXX 3000–3999Assigned ONVOY, LLC 224C CICERO IL
2026-04-16 464-270-0XXX 0000–0999Assigned ONVOY, LLC 224C LA GRANGE IL
2026-04-06 464-221-4XXX 4000–4999Assigned BOOST SUBSCRIBERCO L.L.C. 490J BERWYN IL
2026-04-06 464-221-6XXX 6000–6999Assigned BOOST SUBSCRIBERCO L.L.C. 490J BERWYN IL
2026-04-06 464-221-8XXX 8000–8999Assigned BOOST SUBSCRIBERCO L.L.C. 490J BERWYN IL
2026-04-06 464-221-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J BERWYN IL
2026-04-02 464-283-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BLUEISLAND IL
2026-04-02 464-283-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BLUEISLAND IL
2026-03-31 464-277-4XXX 4000–4999Assigned AHOI LLC 883K SUMMIT IL
2026-03-31 464-777-1XXX 1000–1999Assigned EXIANT COMMUNICATIONS LLC 114J WILLOW SPG IL
2026-03-23 464-258-4XXX 4000–4999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CICERO IL
2026-03-19 464-258-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2026-03-19 464-259-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2026-03-19 464-282-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2026-03-19 464-282-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2026-03-19 464-282-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2026-03-19 464-282-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2026-03-19 464-287-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2026-03-19 464-287-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2026-03-19 464-287-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2026-03-19 464-287-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2026-03-19 464-287-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2026-03-19 464-287-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2026-03-12 464-280-1XXX 1000–1999Assigned ONVOY, LLC 224C ORLAND IL
2026-03-12 464-284-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICAGOHTS IL
2026-03-12 464-284-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICAGOHTS IL
2026-03-06 464-283-3XXX 3000–3999Assigned BOOST SUBSCRIBERCO L.L.C. 490J BLUEISLAND IL
2026-03-04 464-280-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ORLAND IL
2026-03-03 464-270-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2026-03-02 464-283-1XXX 1000–1999Assigned ONVOY, LLC 224C BLUEISLAND IL
2026-03-02 464-286-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2026-03-02 464-286-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL

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.