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
2006-04-28 847-664-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K NORTHBROOK IL
2006-04-25 847-499-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K WHEELING IL
2006-04-25 847-930-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2006-04-17 847-447-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C FRANKLINPK IL
2006-04-13 847-481-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J ARLIGTNHTS IL
2006-04-11 847-637-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2006-04-11 847-637-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2006-04-05 847-865-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WAUCONDA IL
2006-04-04 847-886-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROUND LAKE IL
2006-03-28 847-232-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PARK RIDGE IL
2006-03-28 847-905-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 EVANSTON IL
2006-03-27 847-315-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J DEERFIELD IL
2006-03-27 847-457-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J LAKEFOREST IL
2006-03-27 847-714-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-03-27 847-714-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-03-27 847-783-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K DUNDEE IL
2006-03-27 847-851-0XXX 0000–0999Assigned FIRST COMMUNICATIONS, LLC 460K DUNDEE IL
2006-03-24 847-600-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SKOKIE IL
2006-03-23 847-232-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PARK RIDGE IL
2006-03-15 847-515-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HUNTLEY IL
2006-03-15 847-801-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FRANKLINPK IL
2006-03-14 847-281-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LIBERTYVL IL
2006-03-14 847-660-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2006-03-09 847-371-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LIBERTYVL IL
2006-03-09 847-550-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LAKEZURICH IL
2006-03-09 847-737-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FRANKLINPK IL
2006-03-09 847-873-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-03-09 847-926-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C HIGHLANDPK IL
2006-03-09 847-986-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C GRAYSLAKE IL
2006-03-08 847-859-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C EVANSTON IL
2006-03-07 847-994-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J FRANKLINPK IL
2006-03-01 847-964-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DEERFIELD IL
2006-02-16 847-499-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J WHEELING IL
2006-02-15 847-232-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 PARK RIDGE IL
2006-02-15 847-801-1XXX 1000–1999Assigned ACCESS ONE, INC. - IL 5447 FRANKLINPK IL
2006-02-14 847-785-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2006-02-14 847-887-9XXX 9000–9999Assigned METROPCS, INC. 5562 WAUKEGAN IL
2006-02-09 847-873-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2006-02-08 847-499-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WHEELING IL
2006-02-08 847-499-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WHEELING IL
2006-02-08 847-990-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LIBERTYVL IL
2006-02-03 847-485-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C PALATINE IL
2006-02-03 847-886-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C ROUND LAKE IL
2006-02-02 847-893-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C BARTLETT IL
2006-01-25 847-220-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROSELLE IL
2006-01-18 847-990-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J LIBERTYVL IL
2006-01-17 847-499-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WHEELING IL
2005-12-29 847-231-9XXX 9000–9999Assigned ACCESS ONE, INC. - IL 5447 GRAYSLAKE IL
2005-12-29 847-246-9XXX 9000–9999Assigned ACCESS ONE, INC. - IL 5447 ZION IL
2005-12-29 847-469-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 WAUCONDA 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.