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
2023-09-18 464-666-4XXX 4000–4999Assigned ONVOY, LLC 224C CALUMET CY IL
2023-09-18 464-666-5XXX 5000–5999Assigned ONVOY, LLC 224C CALUMET CY IL
2023-09-18 464-666-7XXX 7000–7999Assigned ONVOY, LLC 224C CALUMET CY IL
2023-09-18 464-768-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICAGOHTS IL
2023-09-18 464-768-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICAGOHTS IL
2023-09-18 464-768-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICAGOHTS IL
2023-09-18 464-768-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICAGOHTS IL
2023-09-18 464-768-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICAGOHTS IL
2023-09-18 464-768-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICAGOHTS IL
2023-09-11 464-230-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2023-09-11 464-230-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2023-09-11 464-230-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2023-09-11 464-230-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2023-09-11 464-230-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2023-09-08 464-224-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2023-09-08 464-224-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2023-09-08 464-224-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2023-09-07 464-529-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICAGOHTS IL
2023-09-07 464-529-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICAGOHTS IL
2023-09-06 464-229-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2023-09-06 464-229-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2023-09-06 464-229-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2023-09-06 464-229-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2023-09-04 464-225-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2023-09-04 464-225-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2023-09-04 464-225-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2023-09-04 464-225-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2023-09-04 464-225-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2023-09-04 464-225-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OAK FOR SO IL
2023-09-01 464-228-2XXX 2000–2999Assigned ONVOY, LLC 224C BLUEISLAND IL
2023-08-16 464-227-2XXX 2000–2999Assigned ONVOY, LLC 224C OAK LAWN IL
2023-08-15 464-200-9XXX 9000–9999Assigned ONVOY, LLC 224C LANSING IL
2023-08-15 464-219-0XXX 0000–0999Assigned ONVOY, LLC 224C CICERO IL
2023-08-15 464-219-1XXX 1000–1999Assigned ONVOY, LLC 224C CICERO IL
2023-08-15 464-219-3XXX 3000–3999Assigned ONVOY, LLC 224C CICERO IL
2023-08-15 464-224-0XXX 0000–0999Assigned ONVOY, LLC 224C LA GRANGE IL
2023-08-15 464-224-1XXX 1000–1999Assigned ONVOY, LLC 224C LA GRANGE IL
2023-08-15 464-226-0XXX 0000–0999Assigned ONVOY, LLC 224C FOREST IL
2023-08-15 464-800-9XXX 9000–9999Assigned ONVOY, LLC 224C TINLEYPARK IL
2023-08-15 464-888-5XXX 5000–5999Assigned ONVOY, LLC 224C ORLAND IL
2023-08-08 464-226-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2023-08-08 464-226-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2023-08-08 464-226-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2023-08-08 464-226-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2023-08-08 464-226-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2023-08-08 464-226-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2023-08-08 464-226-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2023-08-04 464-217-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2023-08-04 464-217-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2023-08-04 464-217-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST 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.