NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2008-11-07 773-712-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2008-11-07 773-712-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2008-11-07 773-712-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2008-11-07 773-712-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2008-11-07 773-712-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2008-11-07 773-756-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2008-11-07 773-790-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2008-11-07 773-902-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2008-11-07 773-967-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2008-11-07 773-967-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2008-10-31 773-475-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2008-10-31 773-956-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2008-10-31 773-956-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2008-10-31 773-956-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2008-10-27 773-647-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN03 IL
2008-10-22 773-789-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHICGOZN08 IL
2008-10-14 773-672-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHICGOZN10 IL
2008-10-08 773-672-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHICGOZN10 IL
2008-10-08 773-969-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J CHICGOZN04 IL
2008-10-08 773-969-5XXX 5000–5999Assigned ACCESS ONE, INC. - IL 5447 CHICGOZN04 IL
2008-10-06 773-303-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2008-10-03 773-765-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2008-10-01 773-313-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2008-10-01 773-313-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2008-10-01 773-564-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2008-10-01 773-654-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2008-09-30 773-747-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2008-09-30 773-747-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2008-09-17 773-717-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN07 IL
2008-09-16 773-766-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2008-09-16 773-766-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2008-09-16 773-766-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2008-09-16 773-766-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2008-09-10 773-372-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2008-09-10 773-372-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2008-09-10 773-372-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2008-09-10 773-372-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2008-09-10 773-372-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2008-09-09 773-809-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2008-09-09 773-956-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2008-09-09 773-956-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2008-09-09 773-956-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2008-09-03 773-703-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2008-09-03 773-703-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2008-09-03 773-703-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2008-09-03 773-703-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2008-09-03 773-703-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2008-09-03 773-703-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2008-09-03 773-703-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2008-09-03 773-703-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.