NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

77 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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
NEW CINGULAR WIRELESS PCS, LLC - IL 31
NEW CINGULAR WIRELESS PCS, LLC - DC 30
NEW CINGULAR WIRELESS PCS, LLC - GA 8
NEW CINGULAR WIRELESS PCS, LLC 8
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
301-633 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
301-642 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
301-646 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
301-648 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
301-653 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALDORF MD
301-655 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
301-659 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALDORF MD
301-661 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
301-667 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
301-673 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDERICK MD
301-676 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDERICK MD
301-697 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CUMBERLAND MD
301-730 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
301-742 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
301-814 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
301-906 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
301-910 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
301-919 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
301-964 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
302-220 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
302-228 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
302-229 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
302-249 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
302-359 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER DE
302-367 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
302-373 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN DE
302-423 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER DE
302-437 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN DE
302-438 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
302-521 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
302-544 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
302-559 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
302-561 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
302-562 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
302-563 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN DE
302-588 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
302-670 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER DE
302-690 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HOCKESSIN DE
302-740 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
302-743 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
302-745 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
302-750 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
302-753 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
302-766 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HOCKESSIN DE
303-249 NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
303-250 NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
303-324 NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
303-350 NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
303-378 NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
303-408 NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.