NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

1 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 773
ONVOY, 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
2023-09-08 773-500-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN10 IL
2023-09-01 773-200-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2023-09-01 773-200-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2023-09-01 773-200-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2023-09-01 773-200-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2023-09-01 773-200-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2023-09-01 773-200-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2023-08-25 773-872-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2023-08-25 773-872-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2023-08-25 773-872-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2023-08-25 773-872-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2023-07-21 773-872-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN04 IL
2023-07-21 773-872-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN04 IL
2023-07-20 773-300-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2023-07-20 773-300-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2023-07-20 773-300-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2023-07-20 773-300-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2023-07-06 773-300-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J CHICGOZN05 IL
2023-06-15 773-300-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN05 IL
2023-06-15 773-300-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN05 IL
2023-06-15 773-300-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN05 IL
2023-06-15 773-500-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN10 IL
2023-06-15 773-500-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN10 IL
2023-06-15 773-500-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN10 IL
2023-06-14 773-309-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN05 IL
2023-06-08 773-200-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2023-06-08 773-200-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2023-06-08 773-200-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2023-06-08 773-277-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2023-06-08 773-446-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2023-06-08 773-521-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2023-06-08 773-872-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2023-06-08 773-872-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2023-06-08 773-872-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2023-06-08 773-872-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2023-05-18 773-200-0XXX 0000–0999Assigned FIVE9, INC. 598J CHICGOZN02 IL
2023-05-18 773-773-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2023-05-18 773-773-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2023-05-18 773-773-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2023-05-18 773-773-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2023-05-18 773-773-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2023-05-18 773-773-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2023-05-18 773-773-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2023-05-18 773-773-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2023-05-18 773-773-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2023-05-18 773-773-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2023-04-28 773-527-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2022-12-05 773-599-5XXX 5000–5999Assigned TELNYX LLC 073H CHICGOZN08 IL
2022-11-16 773-309-2XXX 2000–2999Assigned TELNYX LLC 073H CHICGOZN05 IL
2022-11-09 773-461-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN02 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.