NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 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, last 30 days — NPA 302
NEW CINGULAR WIRELESS PCS, LLC - DC 1
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
2026-08-24 302-718 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2026-05-13 302-717 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN DE
2026-05-05 302-713 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
2026-03-11 302-712 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2025-10-31 302-714 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2025-08-20 302-704 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
2025-06-26 302-692 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2025-06-26 302-699 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2025-05-15 302-680 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2025-03-05 302-675 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2024-12-02 302-671 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2024-08-29 302-649 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2024-06-26 302-646 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2024-05-10 302-641 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2024-03-11 302-638 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2023-10-11 302-619 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2023-08-03 302-410 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 REHOBOTH DE
2022-04-13 302-609 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
2021-05-07 302-568 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
2020-02-07 302-277 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
2019-05-13 302-493 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 REHOBOTH DE
2018-03-28 302-386 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 REHOBOTH DE
2015-11-06 302-567 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 REHOBOTH DE
2014-04-25 302-503 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2012-01-26 302-212 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 REHOBOTH DE
2011-09-22 302-268 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
2009-01-09 302-333 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
2002-02-19 302-290 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
2001-03-19 302-265 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
— 302-220 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-228 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
— 302-229 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-249 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
— 302-359 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER DE
— 302-367 0XXX1XXX2XXX3XXX7XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-373 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN DE
— 302-423 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER DE
— 302-437 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN DE
— 302-438 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
— 302-521 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
— 302-544 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-559 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
— 302-561 1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-562 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-563 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN DE
— 302-588 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
— 302-670 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER DE
— 302-690 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HOCKESSIN DE
— 302-740 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-743 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE

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.