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
206-679 T-MOBILE USA, INC. 6529 SEATTLE WA
206-680 SPOK, INC. 6630 SEATTLE WA
206-681 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-682 QWEST CORPORATION 9638 SEATTLE WA
206-683 T-MOBILE USA, INC. 6529 SEATTLE WA
206-684 QWEST CORPORATION 9638 SEATTLE WA
206-685 QWEST CORPORATION 9638 SEATTLE WA
206-686 LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
206-687 ONVOY, LLC - WA 483E SEATTLE WA
206-689 QWEST CORPORATION 9638 SEATTLE WA
206-691 QWEST CORPORATION 9638 SEATTLE WA
206-692 QWEST CORPORATION 9638 SEATTLE WA
206-696 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-697 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-700 WA
206-701 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
206-703 ONVOY, LLC - WA 483E SEATTLE WA
206-706 QWEST CORPORATION 9638 SEATTLE WA
206-708 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
206-709 QWEST CORPORATION 9638 SEATTLE WA
206-711 MULTIPLE OCN LISTING MULT XXXXXXXXXX WA
206-713 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-714 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-715 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-716 QWEST CORPORATION 9638 SEATTLE WA
206-718 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-719 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-720 QWEST CORPORATION 9638 SEATTLE WA
206-721 QWEST CORPORATION 9638 SEATTLE WA
206-722 QWEST CORPORATION 9638 SEATTLE WA
206-723 QWEST CORPORATION 9638 SEATTLE WA
206-724 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
206-725 QWEST CORPORATION 9638 SEATTLE WA
206-726 QWEST CORPORATION 9638 SEATTLE WA
206-727 QWEST CORPORATION 9638 SEATTLE WA
206-728 QWEST CORPORATION 9638 SEATTLE WA
206-729 QWEST CORPORATION 9638 SEATTLE WA
206-730 T-MOBILE USA, INC. 6529 SEATTLE WA
206-731 QWEST CORPORATION 9638 SEATTLE WA
206-732 QWEST CORPORATION 9638 SEATTLE WA
206-733 QWEST CORPORATION 9638 SEATTLE WA
206-734 LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
206-736 ONVOY, LLC - WA 483E SEATTLE WA
206-737 ONVOY, LLC - WA 483E SEATTLE WA
206-738 ONVOY, LLC - WA 483E VASHON WA
206-740 LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
206-745 ONVOY, LLC - WA 483E RICHMNDBCH WA
206-748 QWEST CORPORATION 9638 SEATTLE WA
206-749 QWEST CORPORATION 9638 SEATTLE WA
206-752 SKYE TELECOM LLC DBA SKYETEL 622J 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.