NumberResearch Membership · Data 09/18/2026

Recent prefix assignments

30 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
NEW CINGULAR WIRELESS PCS, LLC - DC 30
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
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
304-203 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CLARKSBURG WV
304-206 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
304-208 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
304-261 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MARTINSBG WV
304-268 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MARTINSBG WV
304-299 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ST MARYS WV
304-320 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BLUEFIELD WV
304-389 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
304-531 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIPLEY WV
304-532 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIPLEY WV
304-541 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
304-545 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
304-546 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
304-549 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
304-552 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
304-566 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CLARKSBURG WV
304-579 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MARTINSBG WV
304-633 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
304-634 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
304-638 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
304-640 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MOUNT HOPE WV
304-641 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CLARKSBURG WV
304-642 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ELKINS WV
304-644 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SUTTON WV
304-646 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEWISBURG WV
304-651 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SUMMERSVL WV
304-654 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV

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.