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
2005-12-12 978-701 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J LAWRENCE MA
2005-03-16 978-785 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J LUNENBURG MA
2003-12-08 978-309 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ROCKPORT MA
2001-12-31 978-652 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J TEMPLETON MA
2001-11-21 978-898 0XXX2XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NO READING MA
2001-11-09 978-893 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J ACTON MA
2001-08-21 978-831 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J CONCORD MA
2001-07-27 978-243 1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J MAYNARD MA
2001-06-12 978-783 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ANDOVER MA
2001-05-08 978-391 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J AYER MA
2001-05-08 978-520 1XXX2XXX5XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WILMINGTON MA
2001-05-08 978-584 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J BILLERICA MA
2001-05-08 978-586 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J BOLTON MA
2001-05-08 978-598 3XXX5XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J CLINTON MA
2001-05-08 978-668 1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J WESTMINSTR MA
2001-05-08 978-672 1XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J PRINCETON MA
2001-05-08 978-678 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J STERLING MA
2001-05-08 978-696 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J FITCHBURG MA
2001-05-08 978-727 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WESTFORD MA
2001-05-08 978-888 1XXX3XXX4XXX5XXX7XXX8XXX which blocks → PAETEC ITEL, LLC 829J LOWELL MA
2001-05-03 978-253 0XXX4XXX which blocks → PAETEC ITEL, LLC 829J WILMINGTON MA
2001-04-19 978-420 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J HAVERHILL MA
2001-03-19 978-212 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J HUDSON MA
2001-03-19 978-596 4XXX5XXX6XXX7XXX8XXX which blocks → PAETEC ITEL, LLC 829J LOWELL MA
2001-02-20 978-289 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J ANDOVER MA
2001-02-20 978-715 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J BILLERICA MA
2001-01-16 978-225 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J NEWBURYPT MA
2001-01-08 978-344 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → PAETEC ITEL, LLC 829J MAYNARD MA
2001-01-08 978-709 1XXX2XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J ATHOL MA
— 978-203 0XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WILMINGTON MA
— 978-215 not yet reported which blocks → PAETEC ITEL, LLC 829J BILLERICA MA
— 978-223 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J DANVERS MA
— 978-268 4XXX which blocks → PAETEC ITEL, LLC 829J ACTON MA
— 978-269 4XXX5XXX6XXX7XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ANDOVER MA
— 978-279 1XXX9XXX which blocks → PAETEC ITEL, LLC 829J BEVERLY MA
— 978-291 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J LAWRENCE MA
— 978-296 3XXX4XXX5XXX7XXX8XXX which blocks → PAETEC ITEL, LLC 829J ANDOVER MA
— 978-306 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J SALEM MA
— 978-308 0XXX1XXX2XXX5XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J W NEWBURY MA
— 978-327 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J LAWRENCE MA
— 978-349 1XXX8XXX which blocks → PAETEC ITEL, LLC 829J LOWELL MA
— 978-380 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J IPSWICH MA
— 978-396 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NO READING MA
— 978-398 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J LAWRENCE MA
— 978-405 4XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J CONCORD MA
— 978-410 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J GARDNER MA
— 978-415 0XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J BERLIN MA
— 978-478 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J HAVERHILL MA
— 978-481 0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J PRINCETON MA
— 978-491 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J GLOUCESTER 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.