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
978-542 VERIZON NEW ENGLAND INC. 9102 SALEM MA
978-543 PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F NO READING MA
978-544 VERIZON NEW ENGLAND INC. 9102 ORANGE MA
978-545 BANDWIDTH.COM CLEC, LLC - MA 990E BILLERICA MA
978-546 VERIZON NEW ENGLAND INC. 9102 ROCKPORT MA
978-547 BANDWIDTH.COM CLEC, LLC - MA 990E BILLERICA MA
978-548 TC SYSTEMS, INC. 7135 PEABODY MA
978-549 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEOMINSTER MA
978-550 MA
978-551 VERIZON NEW ENGLAND INC. 9102 LOWELL MA
978-552 TC SYSTEMS, INC. 7135 LAWRENCE MA
978-554 VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
978-555 MULTIPLE OCN LISTING MULT DIR ASST MA
978-556 VERIZON NEW ENGLAND INC. 9102 HAVERHILL MA
978-557 VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
978-558 LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOLTON MA
978-559 TC SYSTEMS, INC. 7135 GLOUCESTER MA
978-560 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DANVERS MA
978-561 COMCAST IP PHONE, LLC 318J TOPSFIELD MA
978-562 VERIZON NEW ENGLAND INC. 9102 HUDSON MA
978-563 COMCAST IP PHONE, LLC 318J STERLING MA
978-565 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALEM MA
978-566 CENTURYLINK COMMUNICATIONS, LLC 508J LAWRENCE MA
978-567 VERIZON NEW ENGLAND INC. 9102 HUDSON MA
978-568 VERIZON NEW ENGLAND INC. 9102 HUDSON MA
978-569 PAETEC ITEL, LLC 829J LOWELL MA
978-570 TC SYSTEMS, INC. 7135 WILMINGTON MA
978-571 PAETEC ITEL, LLC 829J WESTMINSTR MA
978-572 BANDWIDTH.COM CLEC, LLC - MA 990E NEWBURYPT MA
978-573 VERIZON NEW ENGLAND INC. 9102 PEABODY MA
978-574 LEVEL 3 COMMUNICATIONS, LLC - MA 4018 ATHOLFKLN MA
978-575 VERIZON NEW ENGLAND INC. 9102 ATHOLFKLN MA
978-576 BANDWIDTH.COM CLEC, LLC - MA 990E CONCORD MA
978-577 PAETEC ITEL, LLC 829J WESTFORD MA
978-579 VERIZON NEW ENGLAND INC. 9102 SUDBURY MA
978-582 VERIZON NEW ENGLAND INC. 9102 LUNENBURG MA
978-583 NORFOLK COUNTY INTERNET, INC. 6083 SALEM MA
978-585 BANDWIDTH.COM CLEC, LLC - MA 990E CONCORD MA
978-587 LEVEL 3 COMMUNICATIONS, LLC - MA 4018 PEABODY MA
978-589 VERIZON NEW ENGLAND INC. 9102 WESTFORD MA
978-590 METROPCS, INC. 5562 LAWRENCE MA
978-591 BANDWIDTH.COM CLEC, LLC - MA 990E CONCORD MA
978-592 ONVOY, LLC - MA 892D BERLIN MA
978-593 BANDWIDTH.COM CLEC, LLC - MA 990E ATHOLFKLN MA
978-594 COMCAST IP PHONE, LLC 318J SALEM MA
978-595 LEVEL 3 COMMUNICATIONS, LLC - MA 4018 PEABODY MA
978-597 VERIZON NEW ENGLAND INC. 9102 TOWNSEND MA
978-599 PAETEC ITEL, LLC 829J SALEM MA
978-601 METROPCS, INC. 5562 LAWRENCE MA
978-602 PAETEC ITEL, LLC 829J FITCHBURG 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.