NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 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
2023-10-10 650-220 T-MOBILE USA, INC. 6529 MT VIEW CA
2023-10-10 657-705 T-MOBILE USA, INC. 6529 CYPRESS CA
2023-10-10 804-857 CALLWORKS CORPORATION 475J RICHMOND VA
2023-10-10 825-486 Iristel Inc. 154E Drayton Valley —
2023-10-10 825-487 Iristel Inc. 154E Drayton Valley —
2023-10-10 826-229 CALLWORKS CORPORATION 475J ROANOKE VA
2023-10-10 840-243 T-MOBILE USA, INC. 6529 POMONA CA
2023-10-10 858-389 T-MOBILE USA, INC. 6529 CHULAVISTA CA
2023-10-10 948-213 CALLWORKS CORPORATION 475J NRFOLKZON3 VA
2023-10-10 949-803 T-MOBILE USA, INC. 6529 NEWPORTBCH CA
2023-10-10 956-807 BANDWIDTH.COM CLEC, LLC - TX 004F DONNA TX
2023-10-10 971-468 T-MOBILE USA, INC. 6529 DALLAS OR
2023-10-09 239-452 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 NO NAPLES FL
2023-10-09 307-301 IP HORIZON LLC 515J CASPER WY
2023-10-09 412-830 ONVOY, LLC - PA 547E PTTSBGZON6 PA
2023-10-09 434-357 CALLWORKS CORPORATION 475J LYNCHBURG VA
2023-10-09 434-358 CALLWORKS CORPORATION 475J CHARLOTSVL VA
2023-10-09 445-285 ONVOY, LLC - PA 547E PHLDLPHZN1 PA
2023-10-09 501-546 LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FAIRFLD BY AR
2023-10-09 571-658 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-10-09 609-355 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BARNEGAT NJ
2023-10-09 680-292 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MASSENA NY
2023-10-09 703-512 CALLWORKS CORPORATION 475J WSNGTNZN08 VA
2023-10-09 747-347 METROPCS NETWORKS, LLC 899D NORTHRIDGE CA
2023-10-09 747-349 METROPCS NETWORKS, LLC 899D SNFN PACM CA
2023-10-09 772-298 NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STUART FL
2023-10-09 786-981 EWART TECHNOLOGIES INC DBA ISLECALL COMM 517J NORTH DADE FL
2023-10-09 951-670 METROPCS NETWORKS, LLC 899D ELSINORE CA
2023-10-09 951-673 METROPCS NETWORKS, LLC 899D HEMT SNJC CA
2023-10-09 971-467 TELEPORT COMMUNICATIONS AMERICA, LLC - OR 7531 PORTLAND OR
2023-10-06 309-943 CALLWORKS CORPORATION 475J PEORIA IL
2023-10-06 334-909 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 PHENIXCITY AL
2023-10-06 425-550 NEW CINGULAR WIRELESS PCS, LLC 6010 HALLS LAKE WA
2023-10-06 575-307 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARLSBAD NM
2023-10-06 609-215 ONVOY, LLC - NJ 637C ALLENTOWN NJ
2023-10-06 689-318 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 KISSIMMEE FL
2023-10-06 730-225 CALLWORKS CORPORATION 475J CAIRO IL
2023-10-06 857-506 OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2023-10-06 859-378 AT&T - LOCAL 7421 LITTLEROCK KY
2023-10-06 862-435 ONVOY, LLC - NJ 637C CHATHAM NJ
2023-10-06 863-347 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 LAKELAND FL
2023-10-06 863-350 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WINTER HVN FL
2023-10-06 925-514 NEW CINGULAR WIRELESS PCS, LLC 6010 MARTINEZ CA
2023-10-06 938-221 NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROGERSVL AL
2023-10-05 229-644 NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FITZGERALD GA
2023-10-05 234-378 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CANTON OH
2023-10-05 337-618 VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2023-10-05 368-990 TELUS Mobility 8301 Banff —
2023-10-05 385-556 NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2023-10-05 440-601 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAGRINFLS OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.