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
2001-04-23 206-268 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
2001-04-23 206-505 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
2001-04-23 206-694 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
2001-04-23 206-695 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
2001-04-23 206-834 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
2001-04-23 206-892 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
2001-04-23 207-318 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PORTLAND ME
2001-04-23 207-837 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRUNSWICK ME
2001-04-23 240-427 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WALDORF MD
2001-04-23 240-560 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN12 MD
2001-04-23 253-620 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 TACOMA WA
2001-04-23 253-796 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 KENT WA
2001-04-23 253-904 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 PUYALLUP WA
2001-04-23 253-929 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 AUBURN WA
2001-04-23 253-966 QWEST CORPORATION 9638 TACOMA WA
2001-04-23 253-967 QWEST CORPORATION 9638 TACOMA WA
2001-04-23 253-968 QWEST CORPORATION 9638 TACOMA WA
2001-04-23 253-987 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SUMNER WA
2001-04-23 267-784 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN1 PA
2001-04-23 302-250 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILMINGTON DE
2001-04-23 312-232 AMERICAN MESSAGING SERVICES, LLC 9748 CHICGOZN01 IL
2001-04-23 312-393 AMERICAN MESSAGING SERVICES, LLC 9748 CHICGOZN01 IL
2001-04-23 312-457 AMERICAN MESSAGING SERVICES, LLC 9748 CHICGOZN01 IL
2001-04-23 323-514 METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2001-04-23 323-893 NEW CINGULAR WIRELESS PCS, LLC 6010 MONTEBELLO CA
2001-04-23 360-851 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BLACKDIMND WA
2001-04-23 403-338 TELUS 8084 Calgary —
2001-04-23 425-519 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BELLEVUE WA
2001-04-23 425-586 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BELLEVUE WA
2001-04-23 425-943 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BELLEVUE WA
2001-04-23 425-961 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 ISSAQUAH WA
2001-04-23 425-981 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 RENTON WA
2001-04-23 484-576 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN31 PA
2001-04-23 510-746 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J OKLD TRNID CA
2001-04-23 518-340 CENTRAL VERMONT COMMUNICATIONS, INC. 1941 ALBANY NY
2001-04-23 570-400 LIMITLESS MOBILE, LLC 6921 SHENANDOAH PA
2001-04-23 630-265 AMERICAN MESSAGING SERVICES, LLC 9748 LA GRANGE IL
2001-04-23 630-298 AMERICAN MESSAGING SERVICES, LLC 9748 LA GRANGE IL
2001-04-23 630-316 AMERICAN MESSAGING SERVICES, LLC 9748 LA GRANGE IL
2001-04-23 641-351 METROPCS, INC. 5562 MARSHALLTN IA
2001-04-23 646-271 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2001-04-23 650-468 T-MOBILE USA, INC. 6529 PALO ALTO CA
2001-04-23 708-521 AMERICAN MESSAGING SERVICES, LLC 9748 LA GRANGE IL
2001-04-23 708-718 AMERICAN MESSAGING SERVICES, LLC 9748 LA GRANGE IL
2001-04-23 714-310 NEW CINGULAR WIRELESS PCS, LLC 6010 ANAHEIM CA
2001-04-23 760-685 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VISTA CA
2001-04-23 760-692 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 OCSD CRLS CA
2001-04-23 760-709 LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MAMMOTHLKS CA
2001-04-23 773-781 AMERICAN MESSAGING SERVICES, LLC 9748 CHICGOZN01 IL
2001-04-23 773-845 AMERICAN MESSAGING SERVICES, LLC 9748 CHICGOZN01 IL

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.