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 216
T-MOBILE USA, INC. 64
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
2022-03-17 216-484 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 TERRACE OH
2021-10-22 216-457 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2021-10-22 216-460 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 MONTRSE OH
2021-10-22 216-463 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2021-10-22 216-467 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 TERRACE OH
2021-08-03 216-418 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2021-06-02 216-405 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 TERRACE OH
2016-07-13 216-760 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2015-10-08 216-727 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2015-08-14 216-540 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 TERRACE OH
2015-05-22 216-713 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2015-02-24 216-612 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2014-10-24 216-417 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2014-09-19 216-971 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2014-09-19 216-972 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2014-06-17 216-309 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2014-06-17 216-507 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2014-02-18 216-804 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2014-02-18 216-860 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2013-11-11 216-703 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2013-08-29 216-801 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2013-08-27 216-808 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-06-11 216-239 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-03-12 216-209 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2011-11-28 216-203 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2011-06-29 216-882 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-07-09 216-482 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2003-05-01 216-326 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2003-02-10 216-269 not yet reported which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2003-01-06 216-526 7XXX which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2002-04-22 216-632 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 MONTRSE OH
2002-04-22 216-773 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 TERRACE OH
2002-04-22 216-856 3XXX4XXX5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 INDEPNDNCE OH
2002-04-14 216-253 not yet reported which blocks → T-MOBILE USA, INC. 6529 INDEPNDNCE OH
2002-04-08 216-235 not yet reported which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2002-04-05 216-254 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-12-17 216-240 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-11-19 216-376 not yet reported which blocks → T-MOBILE USA, INC. 6529 TERRACE OH
2001-09-29 216-355 not yet reported which blocks → T-MOBILE USA, INC. 6529 INDEPNDNCE OH
2001-09-23 216-322 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-08-02 216-323 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-03-13 216-835 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-02-26 216-324 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-01-08 216-854 1XXX2XXX3XXX4XXX5XXX8XXX9XXX which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
— 216-214 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
— 216-224 0XXX2XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
— 216-244 8XXX9XXX which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
— 216-256 0XXX2XXX which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
— 216-276 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
— 216-288 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH

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.