NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

22 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 6
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-10-25 224-438-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LAKEZURICH IL
2021-10-25 224-438-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LAKEZURICH IL
2021-10-25 224-438-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LAKEZURICH IL
2021-10-25 224-866-6XXX 6000–6999Assigned FRACTEL, LLC 965H DESPLAINES IL
2021-10-22 224-373-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DEERFIELD IL
2021-10-22 224-373-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DEERFIELD IL
2021-10-22 224-373-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DEERFIELD IL
2021-10-22 224-447-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WAUKEGAN IL
2021-10-22 224-447-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WAUKEGAN IL
2021-10-22 224-447-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WAUKEGAN IL
2021-10-22 224-447-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WAUKEGAN IL
2021-10-22 224-447-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WAUKEGAN IL
2021-10-22 224-809-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2021-10-22 224-809-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2021-10-22 224-809-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2021-10-22 224-809-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2021-10-22 224-809-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2021-10-21 224-341-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H SKOKIE IL
2021-10-21 224-417-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H EVANSTON IL
2021-10-21 224-417-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H EVANSTON IL
2021-10-20 224-292-5XXX 5000–5999Assigned ONVOY, LLC 224C MUNDELEIN IL
2021-10-20 224-292-6XXX 6000–6999Assigned ONVOY, LLC 224C MUNDELEIN IL
2021-10-20 224-292-7XXX 7000–7999Assigned ONVOY, LLC 224C MUNDELEIN IL
2021-10-20 224-341-5XXX 5000–5999Assigned ONVOY, LLC 224C SKOKIE IL
2021-10-20 224-341-6XXX 6000–6999Assigned ONVOY, LLC 224C SKOKIE IL
2021-10-20 224-341-7XXX 7000–7999Assigned ONVOY, LLC 224C SKOKIE IL
2021-10-20 224-351-5XXX 5000–5999Assigned ONVOY, LLC 224C HALF DAY IL
2021-10-20 224-351-6XXX 6000–6999Assigned ONVOY, LLC 224C HALF DAY IL
2021-10-20 224-378-6XXX 6000–6999Assigned ONVOY, LLC 224C LIBERTYVL IL
2021-10-20 224-378-7XXX 7000–7999Assigned ONVOY, LLC 224C LIBERTYVL IL
2021-10-20 224-378-8XXX 8000–8999Assigned ONVOY, LLC 224C LIBERTYVL IL
2021-10-20 224-394-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H BARTLETT IL
2021-10-20 224-397-6XXX 6000–6999Assigned ONVOY, LLC 224C ALGONQUIN IL
2021-10-20 224-397-7XXX 7000–7999Assigned ONVOY, LLC 224C ALGONQUIN IL
2021-10-20 224-786-0XXX 0000–0999Assigned ONVOY, LLC 224C HIGHLANDPK IL
2021-10-20 224-786-5XXX 5000–5999Assigned ONVOY, LLC 224C HIGHLANDPK IL
2021-10-20 224-786-9XXX 9000–9999Assigned ONVOY, LLC 224C HIGHLANDPK IL
2021-10-20 224-809-2XXX 2000–2999Assigned ONVOY, LLC 224C DESPLAINES IL
2021-10-20 224-809-3XXX 3000–3999Assigned ONVOY, LLC 224C DESPLAINES IL
2021-10-20 224-809-4XXX 4000–4999Assigned ONVOY, LLC 224C DESPLAINES IL
2021-10-19 224-437-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WHEELING IL
2021-10-14 224-395-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BENSENVL IL
2021-10-11 224-398-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-10-11 224-398-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-10-11 224-398-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-10-11 224-398-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-10-11 224-398-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-10-11 224-398-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-10-11 224-398-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-10-11 224-431-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS 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.