NumberResearch Membership · Data 09/21/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026

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
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
— 978-363 0XXX3XXX6XXX9XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 W NEWBURY MA
— 978-365 0XXX which blocks → VERIZON NEW ENGLAND INC. 9102 CLINTON MA
— 978-367 6XXX which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-368 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 CLINTON MA
— 978-369 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 CONCORD MA
— 978-370 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 NO READING MA
— 978-371 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 CONCORD MA
— 978-372 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HAVERHILL MA
— 978-373 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HAVERHILL MA
— 978-374 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HAVERHILL MA
— 978-386 1XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW ENGLAND INC. 9102 ASHBY MA
— 978-388 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 AMESBURY MA
— 978-392 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WESTFORD MA
— 978-412 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 IPSWICH MA
— 978-422 1XXX4XXX which blocks → VERIZON NEW ENGLAND INC. 9102 STERLING MA
— 978-425 1XXX3XXX5XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 SHIRLEY MA
— 978-433 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 PEPPERELL MA
— 978-436 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 BILLERICA MA
— 978-437 0XXX3XXX5XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 BILLERICA MA
— 978-439 0XXX2XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 BILLERICA MA
— 978-440 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 SUDBURY MA
— 978-441 8XXX which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-442 6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-443 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 SUDBURY MA
— 978-445 1XXX5XXX8XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 SUDBURY MA
— 978-446 4XXX6XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-448 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 GROTON MA
— 978-449 1XXX4XXX5XXX7XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 GROTON MA
— 978-452 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-453 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-454 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-456 0XXX1XXX4XXX5XXX6XXX · 5 holders which blocks → VERIZON NEW ENGLAND INC. 9102 HARVARD MA
— 978-458 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-459 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-461 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 MAYNARD MA
— 978-462 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 NEWBURYPT MA
— 978-463 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 NEWBURYPT MA
— 978-464 1XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW ENGLAND INC. 9102 PRINCETON MA
— 978-465 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 NEWBURYPT MA
— 978-466 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LEOMINSTER MA
— 978-468 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HAMILTON MA
— 978-469 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HAVERHILL MA
— 978-470 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 ANDOVER MA
— 978-474 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 ANDOVER MA
— 978-475 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 ANDOVER MA
— 978-486 5XXX7XXX which blocks → VERIZON NEW ENGLAND INC. 9102 LITTLETON MA
— 978-497 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 978-499 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 NEWBURYPT MA
— 978-507 7XXX which blocks → VERIZON NEW ENGLAND INC. 9102 SUDBURY MA
— 978-514 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 LEOMINSTER MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.