NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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, all time — NPA 847
TELEPORT COMMUNICATIONS AMERICA, LLC - IL 51
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
2023-08-30 847-300-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
2023-08-30 847-300-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
2023-08-30 847-300-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
2023-08-30 847-300-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
2023-08-30 847-300-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
2023-08-30 847-300-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
2023-08-30 847-300-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
2023-08-30 847-300-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
2023-08-30 847-300-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
2023-08-30 847-300-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
2022-09-01 847-879-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ELK GROVE IL
2018-12-27 847-598-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ROSELLE IL
2018-02-20 847-320-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LAKEZURICH IL
2015-10-12 847-551-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DUNDEE IL
2013-07-24 847-939-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 PARK RIDGE IL
2012-08-15 847-268-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 PARK RIDGE IL
2005-02-16 847-282-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DEERFIELD IL
2004-11-16 847-485-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 PALATINE IL
2004-10-21 847-610-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ROSELLE IL
2003-12-23 847-930-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ELGIN IL
2003-12-23 847-930-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ELGIN IL
2003-10-10 847-789-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DESPLAINES IL
2003-01-23 847-852-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 BARRINGTON IL
2003-01-22 847-354-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ELK GROVE IL
2002-08-26 847-972-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 SKOKIE IL
2002-05-23 847-844-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DUNDEE IL
2002-01-16 847-876-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 HALF DAY IL
2001-11-27 847-932-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LIBERTYVL IL
2001-11-08 847-453-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 HAMPSHIRE IL
2001-04-02 847-376-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DESPLAINES IL
2001-03-14 847-847-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LAKEZURICH IL
2001-01-13 847-960-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ALGONQUIN IL
2000-07-19 847-245-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LAKE VILLA IL
2000-06-08 847-245-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LAKE VILLA IL
2000-05-11 847-349-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 FRANKLINPK IL
2000-05-11 847-430-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 PARK RIDGE IL
2000-04-26 847-964-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DEERFIELD IL
1999-12-10 847-968-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LIBERTYVL IL
1999-12-10 847-968-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LIBERTYVL IL
1999-12-10 847-968-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LIBERTYVL IL
1999-12-10 847-968-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LIBERTYVL IL
1998-10-23 847-201-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ROUND LAKE IL
1998-10-23 847-230-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ROSELLE IL
1998-10-23 847-377-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
1998-10-23 847-430-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 PARK RIDGE IL
1998-10-23 847-454-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ARLIGTNHTS IL
1998-10-23 847-515-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 HUNTLEY IL
1998-10-23 847-563-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 EVANSTON IL
1998-10-23 847-794-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 PALATINE IL
1998-10-23 847-897-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 NORTHBROOK IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.