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 860
METROPCS, INC. 29
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
2009-12-03 860-574 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 NEW LONDON CT
2008-10-03 860-719 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 HARTFORD CT
2008-10-03 860-840 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 HARTFORD CT
2008-10-03 860-890 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 HARTFORD CT
2002-09-03 860-268 none assigned yet which blocks → METROPCS, INC. 5562 MANCHESTER CT
2001-03-26 860-982 none assigned yet which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-234 4XXX5XXX · 2 holders which blocks → METROPCS, INC. 5562 WILLIMNTIC CT
— 860-250 none assigned yet which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-281 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 MANCHESTER CT
— 860-478 none assigned yet which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-484 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → METROPCS, INC. 5562 THOMASTON CT
— 860-601 9XXX which blocks → METROPCS, INC. 5562 TORRINGTON CT
— 860-637 3XXX5XXX8XXX9XXX · 2 holders which blocks → METROPCS, INC. 5562 SOUTHINGTN CT
— 860-655 none assigned yet which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-662 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → METROPCS, INC. 5562 ESSEX CT
— 860-680 none assigned yet which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-776 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 ENFIELD CT
— 860-778 2XXX which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-833 none assigned yet which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-853 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 OLD SAYBRK CT
— 860-857 none assigned yet which blocks → METROPCS, INC. 5562 NEW LONDON CT
— 860-881 0XXX1XXX2XXX · 2 holders which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-883 none assigned yet which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-888 2XXX which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-913 1XXX2XXX · 2 holders which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-922 none assigned yet which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-961 none assigned yet which blocks → METROPCS, INC. 5562 NEW LONDON CT
— 860-983 none assigned yet which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-985 none assigned yet which blocks → METROPCS, INC. 5562 HARTFORD CT

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.