NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 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)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 978
VERIZON NEW ENGLAND INC. 221
PAETEC ITEL, LLC 90
LEVEL 3 COMMUNICATIONS, LLC - MA 86
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 71
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 59
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-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 978-654 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LOWELL MA
— 978-655 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LAWRENCE MA
— 978-656 1XXX6XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-657 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WILMINGTON MA
— 978-658 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WILMINGTON MA
— 978-659 5XXX which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-661 4XXX which blocks → VERIZON NEW ENGLAND INC. 9102 WILMINGTON MA
— 978-662 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 ANDOVER MA
— 978-663 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 BILLERICA MA
— 978-664 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 NO READING MA
— 978-665 1XXX8XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 FITCHBURG MA
— 978-666 0XXX1XXX6XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SALEM MA
— 978-667 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 BILLERICA MA
— 978-669 4XXX5XXX6XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J GARDNER MA
— 978-670 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 BILLERICA MA
— 978-671 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 BILLERICA MA
— 978-674 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E LOWELL MA
— 978-675 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 8 holders which blocks → VERIZON NEW ENGLAND INC. 9102 GLOUCESTER MA
— 978-677 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TC SYSTEMS, INC. 7135 LOWELL MA
— 978-679 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J LITTLETON MA
— 978-680 3XXX5XXX8XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E CONCORD MA
— 978-681 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-682 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-683 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-684 0XXX2XXX3XXX4XXX9XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 ANDOVER MA
— 978-685 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-686 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-687 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-688 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-689 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-691 3XXX9XXX which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-692 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WESTFORD MA
— 978-693 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J W NEWBURY MA
— 978-694 5XXX which blocks → VERIZON NEW ENGLAND INC. 9102 WILMINGTON MA
— 978-695 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 CONCORD MA
— 978-697 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LAWRENCE MA
— 978-698 0XXX2XXX4XXX5XXX9XXX · 2 holders which blocks → TC SYSTEMS, INC. 7135 LITTLETON MA
— 978-699 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ANDOVER MA
— 978-700 not yet reported which blocks → MA
— 978-703 3XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J LOWELL MA
— 978-704 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - MA 892D MANCHESTER MA
— 978-705 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 DANVERS MA
— 978-706 1XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E CLINTON MA
— 978-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 978-712 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BEVERLY MA
— 978-713 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 IPSWICH MA
— 978-714 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 FITCHBURG MA
— 978-716 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DANVERS MA
— 978-717 0XXX1XXX3XXX4XXX5XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 PEABODY MA
— 978-719 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ANDOVER MA

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.