NumberResearch Membership · Data 2026-04

Recent prefix assignments

380 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04

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
8X8, INC. 38
ONVOY, LLC - CA 37
NEW CINGULAR WIRELESS PCS, LLC - IL 33
NEW CINGULAR WIRELESS PCS, LLC - DC 30
ONVOY, LLC - TX 18
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
206-753 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 SEATTLE WA
206-754 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 SEATTLE WA
206-755 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-757 QWEST CORPORATION 9638 SEATTLE WA
206-760 QWEST CORPORATION 9638 SEATTLE WA
206-762 QWEST CORPORATION 9638 SEATTLE WA
206-763 QWEST CORPORATION 9638 SEATTLE WA
206-764 QWEST CORPORATION 9638 SEATTLE WA
206-765 LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
206-766 QWEST CORPORATION 9638 SEATTLE WA
206-767 QWEST CORPORATION 9638 SEATTLE WA
206-768 QWEST CORPORATION 9638 SEATTLE WA
206-769 T-MOBILE USA, INC. 6529 SEATTLE WA
206-770 QWEST CORPORATION 9638 SEATTLE WA
206-772 QWEST CORPORATION 9638 SEATTLE WA
206-774 LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
206-776 FIVE9, INC. 598J SEATTLE WA
206-777 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
206-778 T-MOBILE USA, INC. 6529 SEATTLE WA
206-779 T-MOBILE USA, INC. 6529 SEATTLE WA
206-780 QWEST CORPORATION 9638 BAINBDG IS WA
206-781 QWEST CORPORATION 9638 SEATTLE WA
206-782 QWEST CORPORATION 9638 SEATTLE WA
206-783 QWEST CORPORATION 9638 SEATTLE WA
206-784 QWEST CORPORATION 9638 SEATTLE WA
206-786 T-MOBILE USA, INC. 6529 SEATTLE WA
206-788 QWEST CORPORATION 9638 SEATTLE WA
206-789 QWEST CORPORATION 9638 SEATTLE WA
206-790 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-792 XO WASHINGTON, INC. 7340 SEATTLE WA
206-793 T-MOBILE USA, INC. 6529 SEATTLE WA
206-794 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-795 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-797 QWEST CORPORATION 9638 SEATTLE WA
206-799 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-801 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RICHMNDBCH WA
206-802 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 SEATTLE WA
206-803 ONVOY, LLC - WA 483E BAINBDG IS WA
206-805 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
206-808 QWEST CORPORATION 9638 SEATTLE WA
206-809 TELNYX LLC 073H SEATTLE WA
206-810 SPOK, INC. 6630 SEATTLE WA
206-811 MULTIPLE OCN LISTING MULT XXXXXXXXXX WA
206-812 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
206-816 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
206-817 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-818 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-819 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-824 QWEST CORPORATION 9638 DES MOINES WA
206-826 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.