NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

371 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 31
NEW CINGULAR WIRELESS PCS, LLC - DC 30
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
941-966 FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 VENICE FL
941-976 FL
941-979 PAETEC ITEL, LLC 829J PTCHARLOTT FL
941-981 MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 PALMETTO FL
941-992 HD CARRIER LLC 321J NORTH PORT FL
941-999 ONVOY, LLC - FL 937C ENGLEWOOD FL
943-205 ONVOY, LLC - GA 067D TALLAPOOSA GA
943-211 MULTIPLE OCN LISTING MULT XXXXXXXXXX GA
943-311 MULTIPLE OCN LISTING MULT XXXXXXXXXX GA
943-411 MULTIPLE OCN LISTING MULT XXXXXXXXXX GA
943-511 MULTIPLE OCN LISTING MULT XXXXXXXXXX GA
943-555 MULTIPLE OCN LISTING MULT DIR ASST GA
943-611 MULTIPLE OCN LISTING MULT XXXXXXXXXX GA
943-700 GA
943-711 MULTIPLE OCN LISTING MULT XXXXXXXXXX GA
943-811 MULTIPLE OCN LISTING MULT XXXXXXXXXX GA
943-911 MULTIPLE OCN LISTING MULT XXXXXXXXXX GA
943-950 GA
943-958 GA
943-959 GA
943-976 GA
945-211 MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
945-221 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
945-291 T-MOBILE USA, INC. 6529 FRISCO TX
945-311 MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
945-411 MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
945-511 MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
945-555 MULTIPLE OCN LISTING MULT DIR ASST TX
945-611 MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
945-700 TX
945-711 MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
945-811 MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
945-911 MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
945-950 TX
945-958 TX
945-959 TX
945-976 TX
947-211 MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
947-219 ONVOY, LLCV - MI 543C BIRMINGHAM MI
947-230 METROPCS, INC. 5562 ROYAL OAK MI
947-282 ONVOY, LLCV - MI 543C SOUTHFIELD MI
947-311 MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
947-411 MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
947-447 COMMIO, LLC 939H ROCHESTER MI
947-511 MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
947-555 MULTIPLE OCN LISTING MULT DIR ASST MI
947-611 MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
947-700 MI
947-711 MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
947-811 MULTIPLE OCN LISTING MULT XXXXXXXXXX MI

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.