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
— 978-933 1XXX2XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TC SYSTEMS, INC. 7135 ANDOVER MA
— 978-934 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-935 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 LOWELL MA
— 978-936 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 ACTON MA
— 978-937 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-939 0XXX3XXX6XXX7XXX9XXX · 5 holders which blocks → VERIZON NEW ENGLAND INC. 9102 TEMPLETON MA
— 978-940 not yet reported which blocks → MA
— 978-943 0XXX3XXX4XXX5XXX7XXX8XXX which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 LAWRENCE MA
— 978-945 1XXX2XXX3XXX7XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HAVERHILL MA
— 978-946 3XXX4XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-947 6XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BILLERICA MA
— 978-948 0XXX4XXX9XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 ROWLEY MA
— 978-950 not yet reported which blocks → MA
— 978-952 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 LITTLETON MA
— 978-957 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-958 1XXX6XXX7XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E GARDNER MA
— 978-959 not yet reported which blocks → MA
— 978-960 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LAWRENCE MA
— 978-964 3XXX5XXX6XXX7XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BILLERICA MA
— 978-965 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 LAWRENCE MA
— 978-967 0XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-968 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J PEABODY MA
— 978-969 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J BEVERLY MA
— 978-970 6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-973 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAWRENCE MA
— 978-974 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-975 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-976 not yet reported which blocks → MA
— 978-977 1XXX which blocks → VERIZON NEW ENGLAND INC. 9102 PEABODY MA
— 978-980 not yet reported which blocks → MA
— 978-981 1XXX2XXX3XXX4XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALEM MA
— 978-982 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J PEABODY MA
— 978-983 1XXX4XXX7XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LAWRENCE MA
— 978-984 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J LAWRENCE MA
— 978-985 none assigned yet which blocks → METROPCS, INC. 5562 LAWRENCE MA
— 978-986 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 TOPSFIELD MA
— 978-987 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BILLERICA MA
— 978-988 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WILMINGTON MA
— 978-989 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 LAWRENCE MA
— 978-991 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 GARDNER MA
— 978-992 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NEWBURYPT MA
— 978-993 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BEVERLY MA
— 978-995 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LOWELL MA
— 978-996 8XXX which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 LOWELL MA
— 978-997 1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBURYPT MA
— 978-998 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J BEVERLY 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.