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
206-829 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
206-830 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
206-832 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
206-835 QWEST CORPORATION 9638 SEATTLE WA
206-838 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
206-839 QWEST CORPORATION 9638 SEATTLE WA
206-841 T-MOBILE USA, INC. 6529 SEATTLE WA
206-842 QWEST CORPORATION 9638 BAINBDG IS WA
206-849 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-850 T-MOBILE USA, INC. 6529 SEATTLE WA
206-851 T-MOBILE USA, INC. 6529 SEATTLE WA
206-852 T-MOBILE USA, INC. 6529 SEATTLE WA
206-853 T-MOBILE USA, INC. 6529 SEATTLE WA
206-854 T-MOBILE USA, INC. 6529 SEATTLE WA
206-855 QWEST CORPORATION 9638 BAINBDG IS WA
206-856 T-MOBILE USA, INC. 6529 SEATTLE WA
206-860 QWEST CORPORATION 9638 SEATTLE WA
206-861 QWEST CORPORATION 9638 SEATTLE WA
206-866 LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BAINBDG IS WA
206-870 QWEST CORPORATION 9638 DES MOINES WA
206-875 ONVOY, LLC - WA 483E VASHON WA
206-876 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 SEATTLE WA
206-877 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
206-878 QWEST CORPORATION 9638 DES MOINES WA
206-883 T-MOBILE USA, INC. 6529 SEATTLE WA
206-888 ONVOY, LLC - WA 483E SEATTLE WA
206-890 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-895 TWILIO INTERNATIONAL, INC. 506J SEATTLE WA
206-897 QWEST CORPORATION 9638 SEATTLE WA
206-898 T-MOBILE USA, INC. 6529 SEATTLE WA
206-901 QWEST CORPORATION 9638 SEATTLE WA
206-902 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
206-903 QWEST CORPORATION 9638 SEATTLE WA
206-905 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
206-906 QWEST CORPORATION 9638 SEATTLE WA
206-907 SPOK, INC. 6630 SEATTLE WA
206-909 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-910 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-911 MULTIPLE OCN LISTING MULT XXXXXXXXXX WA
206-913 QWEST CORPORATION 9638 SEATTLE WA
206-914 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-915 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-916 SPOK, INC. 6630 SEATTLE WA
206-917 SPOK, INC. 6630 SEATTLE WA
206-919 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-920 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-922 LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
206-923 QWEST CORPORATION 9638 SEATTLE WA
206-925 QWEST CORPORATION 9638 SEATTLE WA
206-926 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 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.