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 347
METROPCS, INC. 131
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
2009-03-30 347-488 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN04 NY
2009-03-30 347-641 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN04 NY
2009-03-30 347-932 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN05 NY
2009-03-30 347-942 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN05 NY
2009-03-30 347-948 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN04 NY
2009-03-30 347-961 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN05 NY
2009-02-24 347-600 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2009-02-24 347-777 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2008-10-06 347-299 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN10 NY
2008-10-06 347-569 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
2008-10-06 347-898 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN10 NY
2008-10-06 347-965 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2008-09-30 347-465 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN14 NY
2008-09-30 347-499 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN05 NY
2008-09-30 347-737 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN04 NY
2008-09-30 347-792 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
2008-09-30 347-938 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN15 NY
2008-09-30 347-984 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
2008-05-05 347-785 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN06 NY
2007-07-23 347-760 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN06 NY
2007-07-11 347-288 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2007-07-11 347-456 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2007-06-27 347-496 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN06 NY
2007-04-10 347-482 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN06 NY
2007-04-10 347-522 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
2007-04-10 347-848 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2007-01-16 347-243 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN06 NY
2006-10-10 347-510 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2006-10-10 347-870 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2006-09-26 347-803 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 NWYRCYZN04 NY
2006-09-20 347-893 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
2006-09-20 347-962 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
2005-09-19 347-617 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2005-09-19 347-730 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2005-02-14 347-398 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN04 NY
2005-02-07 347-706 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2004-12-28 347-576 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
2002-08-15 347-239 none assigned yet which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2002-05-31 347-733 none assigned yet which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
2002-01-18 347-232 none assigned yet which blocks → METROPCS, INC. 5562 NWYRCYZN06 NY
2001-12-12 347-724 none assigned yet which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2001-10-26 347-256 none assigned yet which blocks → METROPCS, INC. 5562 NWYRCYZN09 NY
2001-10-12 347-546 none assigned yet which blocks → METROPCS, INC. 5562 NWYRCYZN06 NY
2001-08-14 347-743 none assigned yet which blocks → METROPCS, INC. 5562 NWYRCYZN06 NY
2001-05-01 347-236 3XXX4XXX5XXX · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
2001-03-13 347-582 2XXX3XXX4XXX · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN04 NY
2001-03-12 347-392 3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 NWYRCYZN10 NY
2001-02-14 347-219 none assigned yet which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
— 347-262 none assigned yet which blocks → METROPCS, INC. 5562 NWYRCYZN06 NY
— 347-329 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 NWYRCYZN03 NY

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.