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 678
METROPCS, 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
2011-06-27 678-751 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2008-12-17 678-693 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 FLOWEYBRCH GA
2008-12-17 678-769 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 GAINESVL GA
2008-12-17 678-856 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 SOCIALCRCL GA
2008-11-19 678-532 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 COVINGTON GA
2008-11-13 678-600 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 CUMMING GA
2007-01-03 678-668 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 ATLANTA GA
2006-08-15 678-973 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 ATLANTA GA
2006-07-17 678-786 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 CONCORD GA
2005-11-15 678-345 0–9 XXXall 10 · 7 holders which blocks → METROPCS, INC. 5562 MONROE GA
2005-10-05 678-914 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2004-11-22 678-663 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 ATLANTA GA
2004-11-22 678-789 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 ATLANTA GA
2004-01-27 678-616 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 CLERMONT GA
2002-09-24 678-755 not yet reported which blocks → METROPCS, INC. 5562 CUMMING GA
2002-03-28 678-758 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2002-03-28 678-760 not yet reported which blocks → METROPCS, INC. 5562 COVINGTON GA
2002-03-28 678-768 not yet reported which blocks → METROPCS, INC. 5562 CONYERS GA
2002-03-28 678-851 not yet reported which blocks → METROPCS, INC. 5562 SOCIALCRCL GA
2002-01-29 678-548 0XXX2XXX3XXX4XXX5XXX7XXX8XXX which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2002-01-29 678-754 not yet reported which blocks → METROPCS, INC. 5562 NEWNAN GA
2002-01-29 678-886 not yet reported which blocks → METROPCS, INC. 5562 CUMMING GA
2002-01-29 678-887 not yet reported which blocks → METROPCS, INC. 5562 BUFORD GA
2001-12-28 678-508 not yet reported which blocks → METROPCS, INC. 5562 ATLANTA NW GA
2001-10-24 678-698 not yet reported which blocks → METROPCS, INC. 5562 ATLANTA SO GA
2001-05-25 678-614 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2001-05-07 678-361 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2001-05-07 678-520 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2001-05-07 678-521 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2001-05-07 678-522 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2001-05-07 678-523 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2001-05-07 678-524 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-201 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 ATLANTA SO GA
— 678-300 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-357 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-409 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-410 none assigned yet which blocks → METROPCS, INC. 5562 GAINESVL GA
— 678-414 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-438 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-457 2XXX which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-458 2XXX which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-463 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-464 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-471 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-472 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-478 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-480 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-481 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-485 none assigned yet which blocks → METROPCS, INC. 5562 ATLANTA NE GA
— 678-499 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 ATLANTA NE GA

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.