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 214
T-MOBILE USA, INC. 71
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
2026-04-02 214-839 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 IRVING TX
2024-04-19 214-899 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 FRISCO TX
2018-04-26 214-836 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 MCKINNEY TX
2017-10-25 214-892 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 MCKINNEY TX
2017-03-15 214-940 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 FRISCO TX
2016-04-14 214-903 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2016-03-24 214-430 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 FRISCO TX
2016-03-23 214-817 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
2014-09-10 214-713 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ENNIS TX
2014-02-07 214-971 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ENNIS TX
2014-01-28 214-301 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2001-11-09 214-776 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-09-25 214-985 8XXX which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-09-12 214-966 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-08-27 214-690 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-08-20 214-830 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-07-30 214-735 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-07-18 214-927 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-06-27 214-669 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-06-07 214-870 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-05-29 214-264 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-05-02 214-514 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-03-15 214-298 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-02-26 214-938 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-01-03 214-562 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-228 not yet reported which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-241 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 ENNIS TX
— 214-280 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-284 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-315 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-325 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-392 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-400 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
— 214-403 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-405 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-417 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-418 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-448 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-450 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-454 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-455 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-457 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-475 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-476 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-477 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-498 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-516 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-518 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-552 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 214-566 not yet reported which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX

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.