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
NEW CINGULAR WIRELESS PCS, LLC - DC 32
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
2018-02-07 978-896 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2017-07-11 978-916 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2016-10-04 978-871 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2016-04-19 978-438 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2014-08-11 978-872 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAVERHILL MA
2002-08-23 978-809 3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANDOVER MA
2002-08-23 978-810 0XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BEVERLY MA
2002-07-09 978-760 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MAYNARD MA
2002-07-09 978-761 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOWELL MA
2002-06-04 978-798 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEOMINSTER MA
2002-02-19 978-906 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FITCHBURG MA
2001-08-10 978-873 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAWRENCE MA
2001-06-19 978-790 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FITCHBURG MA
2001-06-19 978-944 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BILLERICA MA
2001-04-24 978-764 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAWRENCE MA
2001-03-19 978-495 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BILLERICA MA
2001-02-22 978-317 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2001-02-20 978-387 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAWRENCE MA
— 978-204 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAWRENCE MA
— 978-239 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
— 978-325 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GLOUCESTER MA
— 978-376 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAWRENCE MA
— 978-395 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
— 978-407 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FITCHBURG MA
— 978-430 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BILLERICA MA
— 978-435 1XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BILLERICA MA
— 978-493 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MAYNARD MA
— 978-494 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANDOVER MA
— 978-549 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEOMINSTER MA
— 978-729 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BILLERICA MA
— 978-821 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BILLERICA MA
— 978-973 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 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.