NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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
PAETEC ITEL, LLC 90
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
— 978-513 5XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J LOWELL MA
— 978-516 2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J FITCHBURG MA
— 978-528 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J BILLERICA MA
— 978-533 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J ANDOVER MA
— 978-569 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LOWELL MA
— 978-571 4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J WESTMINSTR MA
— 978-577 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J WESTFORD MA
— 978-599 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J SALEM MA
— 978-602 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J FITCHBURG MA
— 978-612 5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J CLINTON MA
— 978-619 7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J SALEM MA
— 978-620 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J LAWRENCE MA
— 978-624 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J DANVERS MA
— 978-647 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J TOPSFIELD MA
— 978-648 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MAYNARD MA
— 978-651 1XXX9XXX which blocks → PAETEC ITEL, LLC 829J LAWRENCE MA
— 978-654 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LOWELL MA
— 978-669 4XXX5XXX6XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J GARDNER MA
— 978-679 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J LITTLETON MA
— 978-693 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J W NEWBURY MA
— 978-703 3XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J LOWELL MA
— 978-721 4XXX5XXX6XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ATHOL MA
— 978-722 4XXX5XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J LAWRENCE MA
— 978-728 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J LEOMINSTER MA
— 978-752 none assigned yet which blocks → PAETEC ITEL, LLC 829J WILMINGTON MA
— 978-755 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J TOWNSEND MA
— 978-756 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J PETERSHAM MA
— 978-757 0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J AYER MA
— 978-818 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J PEABODY MA
— 978-826 0XXX3XXX4XXX5XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PEABODY MA
— 978-829 4XXX5XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J FITCHBURG MA
— 978-839 3XXX which blocks → PAETEC ITEL, LLC 829J PEABODY MA
— 978-847 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J LEOMINSTER MA
— 978-862 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J AYER MA
— 978-867 0XXX5XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J BEVERLY MA
— 978-870 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J LEOMINSTER MA
— 978-879 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J GLOUCESTER MA
— 978-881 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J ACTON MA
— 978-968 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J PEABODY 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 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.