NumberResearch Membership · Data 09/18/2026

Recent prefix assignments

5 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.

Most active assignees, last 30 days
T-MOBILE USA, INC. 5
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 NPA-NXX prefix assignments
AssignedNPA-NXXAssigneeOCNRate centerState
847-505 T-MOBILE USA, INC. 6529 WAUKEGAN IL
847-514 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-529 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-530 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-571 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-652 T-MOBILE USA, INC. 6529 ELK GROVE IL
847-722 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-754 T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
847-757 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-769 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-774 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-791 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-800 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-812 T-MOBILE USA, INC. 6529 ELK GROVE IL
847-833 T-MOBILE USA, INC. 6529 LA GRANGE IL
847-845 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-858 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-863 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-877 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-878 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-903 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-907 T-MOBILE USA, INC. 6529 PALATINE IL
847-924 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-942 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-962 T-MOBILE USA, INC. 6529 NORTHBROOK IL
847-971 T-MOBILE USA, INC. 6529 NORTHBROOK IL
858-212 T-MOBILE USA, INC. 6529 POWAY CA
858-213 T-MOBILE USA, INC. 6529 POWAY CA
858-254 T-MOBILE USA, INC. 6529 POWAY CA
858-518 T-MOBILE USA, INC. 6529 LA JOLLA CA
858-663 T-MOBILE USA, INC. 6529 POWAY CA
858-682 T-MOBILE USA, INC. 6529 POWAY CA
858-752 T-MOBILE USA, INC. 6529 LA JOLLA CA
858-829 T-MOBILE USA, INC. 6529 POWAY CA
858-864 T-MOBILE USA, INC. 6529 LA JOLLA CA
858-883 T-MOBILE USA, INC. 6529 POWAY CA
858-967 T-MOBILE USA, INC. 6529 LA JOLLA CA
859-393 T-MOBILE USA, INC. 6529 COVINGTON KY
859-466 T-MOBILE USA, INC. 6529 COVINGTON KY
859-786 T-MOBILE USA, INC. 6529 COVINGTON KY
859-803 T-MOBILE USA, INC. 6529 COVINGTON KY
859-816 T-MOBILE USA, INC. 6529 COVINGTON KY
859-866 T-MOBILE USA, INC. 6529 COVINGTON KY
859-907 T-MOBILE USA, INC. 6529 COVINGTON KY
859-916 T-MOBILE USA, INC. 6529 COVINGTON KY
859-992 T-MOBILE USA, INC. 6529 COVINGTON KY
870-413 T-MOBILE USA, INC. 6529 PINE BLUFF AR
870-519 T-MOBILE USA, INC. 6529 FORREST CY AR
870-665 T-MOBILE USA, INC. 6529 EL DORADO AR
870-791 T-MOBILE USA, INC. 6529 CAMDEN AR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.