NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 847
ONVOY, LLC 2
BANDWIDTH.COM CLEC, LLC - 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
2006-09-15 847-385-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-09-15 847-385-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-09-15 847-714-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2006-09-15 847-714-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2006-09-14 847-897-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K NORTHBROOK IL
2006-08-25 847-873-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-08-25 847-873-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-08-25 847-873-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-08-22 847-454-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-08-22 847-637-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-08-22 847-637-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-08-21 847-457-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LAKEFOREST IL
2006-08-21 847-660-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2006-08-17 847-725-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELK GROVE IL
2006-08-16 847-257-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K DESPLAINES IL
2006-08-16 847-410-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K SKOKIE IL
2006-08-16 847-595-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K BENSENVL IL
2006-08-14 847-313-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-08-14 847-504-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-08-14 847-562-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-08-14 847-714-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-08-14 847-714-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-08-14 847-849-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-08-08 847-873-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-08-07 847-380-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROSELLE IL
2006-07-25 847-873-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-07-25 847-873-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-07-21 847-665-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GRAYSLAKE IL
2006-07-19 847-660-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-07-19 847-660-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-07-11 847-496-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PALATINE IL
2006-07-10 847-794-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALATINE IL
2006-07-10 847-861-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HIGHLANDPK IL
2006-07-07 847-393-1XXX 1000–1999Assigned ACCESS ONE, INC. - IL 5447 MUNDELEIN IL
2006-07-07 847-464-3XXX 3000–3999Assigned ACCESS ONE, INC. - IL 5447 PLATO CTR IL
2006-07-07 847-792-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 HAMPSHIRE IL
2006-07-07 847-999-9XXX 9000–9999Assigned ACCESS ONE, INC. - IL 5447 WINNETKA IL
2006-07-03 847-453-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K HAMPSHIRE IL
2006-06-22 847-773-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 ITASCA IL
2006-06-21 847-386-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C WINNETKA IL
2006-06-19 847-777-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C WHEELING IL
2006-06-07 847-276-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C HALF DAY IL
2006-06-01 847-960-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ALGONQUIN IL
2006-05-26 847-410-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C SKOKIE IL
2006-05-25 847-415-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HALF DAY IL
2006-05-24 847-388-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MUNDELEIN IL
2006-05-24 847-754-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-05-24 847-754-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-05-12 847-944-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J ROSELLE IL
2006-05-04 847-353-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WHEELING 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.