NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 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 708
ONVOY, LLC 6
METROPCS, INC. 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 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
2011-06-14 708-537-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-06-14 708-537-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-06-14 708-537-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-06-14 708-537-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-06-14 708-537-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-06-14 708-537-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-06-14 708-539-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2011-06-14 708-539-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2011-06-07 708-232-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HARVEY IL
2011-06-07 708-247-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E LA GRANGE IL
2011-06-07 708-252-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICAGOHTS IL
2011-06-07 708-384-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BELLWOOD IL
2011-06-07 708-391-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CICERO IL
2011-06-07 708-393-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BERWYN IL
2011-06-07 708-457-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E RIVERGROVE IL
2011-06-07 708-586-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E PALOS PARK IL
2011-06-07 708-793-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SUMMIT IL
2011-06-07 708-793-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SUMMIT IL
2011-06-07 708-794-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HOMEWOOD IL
2011-06-07 708-844-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BLUEISLAND IL
2011-06-07 708-844-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BLUEISLAND IL
2011-06-07 708-888-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E RIVERDALE IL
2011-06-07 708-889-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E LANSING IL
2011-06-07 708-929-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SUMMIT IL
2011-06-07 708-933-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CALUMET CY IL
2011-05-27 708-247-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E LA GRANGE IL
2011-05-24 708-400-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICAGOHTS IL
2011-05-24 708-416-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CICERO IL
2011-05-24 708-608-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E PALOS PARK IL
2011-05-24 708-697-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E RIVERGROVE IL
2011-05-24 708-793-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SUMMIT IL
2011-05-24 708-872-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E LANSING IL
2011-05-24 708-888-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E RIVERDALE IL
2011-05-23 708-540-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BELLWOOD IL
2011-05-23 708-637-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BERWYN IL
2011-05-23 708-653-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BLUEISLAND IL
2011-05-23 708-713-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HARVEY IL
2011-05-23 708-752-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BLUEISLAND IL
2011-05-23 708-801-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CALUMET CY IL
2011-05-23 708-816-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HOMEWOOD IL
2011-05-19 708-252-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICAGOHTS IL
2011-05-19 708-258-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C PEOTONE IL
2011-05-19 708-320-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2011-05-19 708-320-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2011-05-19 708-356-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MAYWOOD IL
2011-05-19 708-495-0XXX 0000–0999Assigned METROPCS, INC. 5562 LA GRANGE IL
2011-05-19 708-495-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-05-19 708-495-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-05-19 708-495-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-05-19 708-495-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LA GRANGE 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.