NumberResearch Membership · Data 09/18/2026

Recent prefix assignments

369 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026

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
2001-04-24 904-545 METROPCS, INC. 5562 JACKSONVL FL
2001-04-24 904-759 METROPCS, INC. 5562 JACKSONVL FL
2001-04-24 916-320 METROPCS, INC. 5562 SCRM MAIN CA
2001-04-24 916-475 T-MOBILE USA, INC. 6529 SCRM MAIN CA
2001-04-24 916-759 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2001-04-24 916-919 METROPCS, INC. 5562 SCRM MAIN CA
2001-04-24 925-579 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LIVERMORE CA
2001-04-24 925-839 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MARTINEZ CA
2001-04-24 925-852 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CONCORD CA
2001-04-24 970-300 LEVEL 3 COMMUNICATIONS, LLC - CO 6118 ASPEN CO
2001-04-24 970-404 T-MOBILE USA, INC. 6529 GLENWD SPG CO
2001-04-24 970-405 T-MOBILE USA, INC. 6529 GREELEY CO
2001-04-24 972-638 SOUTHWESTERN BELL 9533 DALLAS TX
2001-04-24 972-792 SOUTHWESTERN BELL 9533 DALLAS TX
2001-04-24 978-505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 CONCORD MA
2001-04-24 978-764 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAWRENCE MA
2001-04-24 985-768 NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SLIDELL LA
2001-04-24 985-772 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 HOUMA LA
2001-04-23 206-212 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 DES MOINES WA
2001-04-23 206-266 LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
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
2001-04-23 425-519 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

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.