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
206-595 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
206-598 QWEST CORPORATION 9638 SEATTLE WA
206-599 QWEST CORPORATION 9638 SEATTLE WA
206-600 ONVOY, LLC - WA 483E SEATTLE WA
206-601 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-603 ONVOY SPECTRUM, LLC 624H VASHON WA
206-604 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-605 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-607 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
206-611 MULTIPLE OCN LISTING MULT XXXXXXXXXX WA
206-612 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-613 QWEST CORPORATION 9638 SEATTLE WA
206-615 QWEST CORPORATION 9638 SEATTLE WA
206-616 RINGSQUARED TELECOM LLC 577F SEATTLE WA
206-617 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-618 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-619 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-621 QWEST CORPORATION 9638 SEATTLE WA
206-622 QWEST CORPORATION 9638 SEATTLE WA
206-623 QWEST CORPORATION 9638 SEATTLE WA
206-624 QWEST CORPORATION 9638 SEATTLE WA
206-625 QWEST CORPORATION 9638 SEATTLE WA
206-626 QWEST CORPORATION 9638 SEATTLE WA
206-628 QWEST CORPORATION 9638 SEATTLE WA
206-629 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 RICHMNDBCH WA
206-632 QWEST CORPORATION 9638 SEATTLE WA
206-633 QWEST CORPORATION 9638 SEATTLE WA
206-634 QWEST CORPORATION 9638 SEATTLE WA
206-642 SPOK, INC. 6630 SEATTLE WA
206-645 SPOK, INC. 6630 SEATTLE WA
206-650 T-MOBILE USA, INC. 6529 SEATTLE WA
206-651 NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
206-652 QWEST CORPORATION 9638 SEATTLE WA
206-653 LEVEL 3 COMMUNICATIONS, LLC - WA 6121 DES MOINES WA
206-654 QWEST CORPORATION 9638 SEATTLE WA
206-655 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
206-658 QWEST CORPORATION 9638 SEATTLE WA
206-660 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-661 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-662 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
206-663 SPOK, INC. 6630 SEATTLE WA
206-664 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
206-666 ONVOY, LLC - WA 483E SEATTLE WA
206-667 QWEST CORPORATION 9638 SEATTLE WA
206-669 NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
206-673 LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
206-674 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
206-675 QWEST CORPORATION 9638 SEATTLE WA
206-676 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
206-678 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 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.