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 626
T-MOBILE USA, INC. 106
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
2014-11-06 626-295 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LA PUENTE CA
2014-10-14 626-267 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2014-09-03 626-693 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ARCADIA CA
2014-07-21 626-624 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LA PUENTE CA
2014-07-21 626-734 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ARCADIA CA
2014-07-21 626-861 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2014-04-11 626-559 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LA PUENTE CA
2012-06-29 626-328 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2011-07-22 626-586 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2010-09-17 626-560 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2007-06-20 626-494 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 COVINA CA
2002-09-19 626-715 not yet reported which blocks → T-MOBILE USA, INC. 6529 LA PUENTE CA
2002-09-19 626-731 4XXX5XXX6XXX7XXX which blocks → T-MOBILE USA, INC. 6529 SNGBLCNN CA
2002-09-19 626-841 4XXX5XXX6XXX7XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 MONROVIA CA
2002-09-19 626-905 7XXX which blocks → T-MOBILE USA, INC. 6529 AZUSA CA
2002-09-19 626-922 not yet reported which blocks → T-MOBILE USA, INC. 6529 COVINA CA
2002-05-17 626-757 not yet reported which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2002-01-28 626-354 not yet reported which blocks → T-MOBILE USA, INC. 6529 PSDN PSDN CA
2001-12-27 626-215 not yet reported which blocks → T-MOBILE USA, INC. 6529 ARCADIA CA
2001-12-27 626-216 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2001-09-19 626-780 not yet reported which blocks → T-MOBILE USA, INC. 6529 EL MONTE CA
2001-08-22 626-625 none assigned yet which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2001-06-25 626-786 none assigned yet which blocks → T-MOBILE USA, INC. 6529 PSDN PSDN CA
2001-05-18 626-890 8XXX which blocks → T-MOBILE USA, INC. 6529 COVINA CA
— 626-230 2XXX which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
— 626-231 1XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 ARCADIA CA
— 626-232 2XXX which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
— 626-234 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
— 626-235 0XXX2XXX3XXX4XXX5XXX6XXX7XXX which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
— 626-244 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 ARCADIA CA
— 626-316 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 PSDN PSDN CA
— 626-367 0XXX which blocks → T-MOBILE USA, INC. 6529 COVINA CA
— 626-383 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 COVINA CA
— 626-391 none assigned yet which blocks → T-MOBILE USA, INC. 6529 COVINA CA
— 626-392 0XXX which blocks → T-MOBILE USA, INC. 6529 COVINA CA
— 626-393 0XXX which blocks → T-MOBILE USA, INC. 6529 COVINA CA
— 626-394 5XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 PSDN PSDN CA
— 626-399 0XXX which blocks → T-MOBILE USA, INC. 6529 PSDN PSDN CA
— 626-417 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
— 626-466 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 SIERRAMADR CA
— 626-478 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 EL MONTE CA
— 626-488 none assigned yet which blocks → T-MOBILE USA, INC. 6529 COVINA CA
— 626-492 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
— 626-500 3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
— 626-627 none assigned yet which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
— 626-644 none assigned yet which blocks → T-MOBILE USA, INC. 6529 PSDN PSDN CA
— 626-662 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ARCADIA CA
— 626-676 none assigned yet which blocks → T-MOBILE USA, INC. 6529 PSDN PSDN CA
— 626-679 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
— 626-726 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 ARCADIA CA

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.