NumberResearch Membership · Data 2026-04

Recent prefix assignments

369 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
978-422 VERIZON NEW ENGLAND INC. 9102 STERLING MA
978-423 OMNIPOINT MIAMI E LICENSE, LLC 6889 LOWELL MA
978-424 TC SYSTEMS, INC. 7135 FITCHBURG MA
978-425 VERIZON NEW ENGLAND INC. 9102 SHIRLEY MA
978-426 NORFOLK COUNTY INTERNET, INC. 6083 PRINCETON MA
978-429 LEVEL 3 COMMUNICATIONS, LLC - MA 4018 ACTON MA
978-430 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BILLERICA MA
978-431 PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F LITTLETON MA
978-432 COMCAST IP PHONE, LLC 318J ROWLEY MA
978-433 VERIZON NEW ENGLAND INC. 9102 PEPPERELL MA
978-435 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BILLERICA MA
978-436 VERIZON NEW ENGLAND INC. 9102 BILLERICA MA
978-437 VERIZON NEW ENGLAND INC. 9102 BILLERICA MA
978-439 VERIZON NEW ENGLAND INC. 9102 BILLERICA MA
978-440 VERIZON NEW ENGLAND INC. 9102 SUDBURY MA
978-441 VERIZON NEW ENGLAND INC. 9102 LOWELL MA
978-442 VERIZON NEW ENGLAND INC. 9102 LOWELL MA
978-443 VERIZON NEW ENGLAND INC. 9102 SUDBURY MA
978-444 BANDWIDTH.COM CLEC, LLC - MA 990E WILMINGTON MA
978-445 VERIZON NEW ENGLAND INC. 9102 SUDBURY MA
978-446 VERIZON NEW ENGLAND INC. 9102 LOWELL MA
978-447 COMCAST IP PHONE, LLC 318J WILMINGTON MA
978-448 VERIZON NEW ENGLAND INC. 9102 GROTON MA
978-449 VERIZON NEW ENGLAND INC. 9102 GROTON MA
978-450 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MAYNARD MA
978-451 LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CONCORD MA
978-452 VERIZON NEW ENGLAND INC. 9102 LOWELL MA
978-453 VERIZON NEW ENGLAND INC. 9102 LOWELL MA
978-454 VERIZON NEW ENGLAND INC. 9102 LOWELL MA
978-455 COMCAST IP PHONE, LLC 318J LOWELL MA
978-456 VERIZON NEW ENGLAND INC. 9102 HARVARD MA
978-457 OMNIPOINT MIAMI E LICENSE, LLC 6889 HAVERHILL MA
978-458 VERIZON NEW ENGLAND INC. 9102 LOWELL MA
978-459 VERIZON NEW ENGLAND INC. 9102 LOWELL MA
978-461 VERIZON NEW ENGLAND INC. 9102 MAYNARD MA
978-462 VERIZON NEW ENGLAND INC. 9102 NEWBURYPT MA
978-463 VERIZON NEW ENGLAND INC. 9102 NEWBURYPT MA
978-464 VERIZON NEW ENGLAND INC. 9102 PRINCETON MA
978-465 VERIZON NEW ENGLAND INC. 9102 NEWBURYPT MA
978-466 VERIZON NEW ENGLAND INC. 9102 LEOMINSTER MA
978-467 RCN TELECOM SERVICES, INC. - MA 7619 WESTFORD MA
978-468 VERIZON NEW ENGLAND INC. 9102 HAMILTON MA
978-469 VERIZON NEW ENGLAND INC. 9102 HAVERHILL MA
978-470 VERIZON NEW ENGLAND INC. 9102 ANDOVER MA
978-472 BANDWIDTH.COM CLEC, LLC - MA 990E CONCORD MA
978-473 METROPCS, INC. 5562 BEVERLY MA
978-474 VERIZON NEW ENGLAND INC. 9102 ANDOVER MA
978-475 VERIZON NEW ENGLAND INC. 9102 ANDOVER MA
978-477 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 W NEWBURY MA
978-478 PAETEC ITEL, LLC 829J HAVERHILL MA

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.