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
— 978-786 1XXX2XXX5XXX6XXX7XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E LEOMINSTER MA
— 978-787 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 BEVERLY MA
— 978-788 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-789 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-791 1XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F DANVERS MA
— 978-792 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TC SYSTEMS, INC. 7135 AMESBURY MA
— 978-794 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-795 0XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → TC SYSTEMS, INC. 7135 ACTON MA
— 978-796 0XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW ENGLAND INC. 9102 AYER MA
— 978-799 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WESTFORD MA
— 978-803 0XXX which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E CONCORD MA
— 978-805 8XXX which blocks → TC SYSTEMS, INC. 7135 LOWELL MA
— 978-806 1XXX5XXX6XXX7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 ANDOVER MA
— 978-807 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LAWRENCE MA
— 978-808 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BILLERICA MA
— 978-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 978-812 0XXX6XXX7XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 TOWNSEND MA
— 978-814 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-815 none assigned yet which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 LOWELL MA
— 978-816 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEVERLY MA
— 978-817 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PEABODY MA
— 978-818 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J PEABODY MA
— 978-819 7XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 W NEWBURY MA
— 978-820 1XXX5XXX7XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 HUBBARDSTN MA
— 978-821 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BILLERICA MA
— 978-823 9XXX which blocks → VERIZON NEW ENGLAND INC. 9102 MAYNARD MA
— 978-824 4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ANDOVER MA
— 978-825 0XXX which blocks → VERIZON NEW ENGLAND INC. 9102 SALEM MA
— 978-826 0XXX3XXX4XXX5XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PEABODY MA
— 978-827 0XXX2XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 ASHBURNHAM MA
— 978-828 none assigned yet which blocks → METROPCS, INC. 5562 LAWRENCE MA
— 978-829 4XXX5XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J FITCHBURG MA
— 978-832 3XXX5XXX6XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALEM MA
— 978-834 1XXX2XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 AMESBURY MA
— 978-835 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LAWRENCE MA
— 978-837 7XXX9XXX which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-838 1XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → VERIZON NEW ENGLAND INC. 9102 BERLIN MA
— 978-839 3XXX which blocks → PAETEC ITEL, LLC 829J PEABODY MA
— 978-840 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LEOMINSTER MA
— 978-841 3XXX6XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 MAYNARD MA
— 978-842 0XXX1XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 GROTON MA
— 978-843 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 STERLING MA
— 978-845 1XXX2XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NO READING MA
— 978-847 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J LEOMINSTER MA
— 978-848 1XXX4XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LOWELL MA
— 978-849 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ACTON MA
— 978-850 0–9 XXXall 10 · 6 holders which blocks → LEAP TELECOM, LLC 616J WESTFORD MA
— 978-851 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-852 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LAWRENCE MA
— 978-853 none assigned yet which blocks → METROPCS, INC. 5562 LAWRENCE 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.