NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

21 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 224
NEW CINGULAR WIRELESS PCS, LLC - IL 11
ONVOY, LLC 5
VERSATEL LLC 1
INTRADO COMMUNICATIONS, LLC 1
EXIANT 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
2017-10-25 224-422-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2017-10-25 224-422-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2017-10-25 224-580-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2017-10-25 224-651-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2017-10-25 224-651-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2017-10-23 224-266-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ELK GROVE IL
2017-10-19 224-516-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAKEFOREST IL
2017-10-19 224-516-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LAKEFOREST IL
2017-10-19 224-575-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2017-10-19 224-575-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2017-10-19 224-575-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2017-10-13 224-551-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DEERFIELD IL
2017-10-13 224-602-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MUNDELEIN IL
2017-10-05 224-762-7XXX 7000–7999Assigned METROPCS, INC. 5562 ELGIN IL
2017-09-15 224-204-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EVANSTON IL
2017-09-15 224-385-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARRINGTON IL
2017-09-08 224-580-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J DESPLAINES IL
2017-09-05 224-204-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 EVANSTON IL
2017-09-01 224-539-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2017-09-01 224-539-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2017-09-01 224-539-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2017-08-30 224-580-4XXX 4000–4999Assigned METROPCS, INC. 5562 DESPLAINES IL
2017-08-22 224-570-2XXX 2000–2999Assigned ONVOY, LLC 224C WAUKEGAN IL
2017-08-22 224-570-3XXX 3000–3999Assigned ONVOY, LLC 224C WAUKEGAN IL
2017-08-22 224-570-4XXX 4000–4999Assigned ONVOY, LLC 224C WAUKEGAN IL
2017-08-22 224-570-5XXX 5000–5999Assigned ONVOY, LLC 224C WAUKEGAN IL
2017-08-18 224-539-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PALATINE IL
2017-08-18 224-998-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SKOKIE IL
2017-08-02 224-287-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2017-08-02 224-287-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2017-08-02 224-287-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2017-07-24 224-264-0XXX 0000–0999Assigned AT&T - LOCAL 7421 DESPLAINES IL
2017-07-24 224-264-1XXX 1000–1999Assigned AT&T - LOCAL 7421 DESPLAINES IL
2017-07-24 224-264-2XXX 2000–2999Assigned AT&T - LOCAL 7421 DESPLAINES IL
2017-07-24 224-264-3XXX 3000–3999Assigned AT&T - LOCAL 7421 DESPLAINES IL
2017-07-24 224-264-4XXX 4000–4999Assigned AT&T - LOCAL 7421 DESPLAINES IL
2017-07-24 224-264-5XXX 5000–5999Assigned AT&T - LOCAL 7421 DESPLAINES IL
2017-07-24 224-264-6XXX 6000–6999Assigned AT&T - LOCAL 7421 DESPLAINES IL
2017-07-24 224-264-7XXX 7000–7999Assigned AT&T - LOCAL 7421 DESPLAINES IL
2017-07-24 224-264-8XXX 8000–8999Assigned AT&T - LOCAL 7421 DESPLAINES IL
2017-07-24 224-264-9XXX 9000–9999Assigned AT&T - LOCAL 7421 DESPLAINES IL
2017-07-07 224-580-5XXX 5000–5999Assigned METROPCS, INC. 5562 DESPLAINES IL
2017-07-05 224-426-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOX LAKE IL
2017-06-30 224-238-6XXX 6000–6999Assigned ONVOY, LLC 224C ELGIN IL
2017-06-30 224-322-0XXX 0000–0999Assigned ONVOY, LLC 224C ARLIGTNHTS IL
2017-06-30 224-529-0XXX 0000–0999Assigned ONVOY, LLC 224C GLENVIEW IL
2017-06-29 224-477-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2017-06-29 224-477-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2017-06-29 224-477-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2017-06-29 224-477-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES 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.