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 678
PAETEC ITEL, LLC 159
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 123
LEVEL 3 COMMUNICATIONS, LLC - GA 94
METROPCS, INC. 64
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA 56
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
2006-09-19 678-633 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 NEWNAN GA
2006-09-19 678-767 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ADAIRSVL 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
2006-05-16 678-312 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 ATLANTA NE GA
2006-05-05 678-490 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA 7435 ATLANTA SO GA
2006-04-27 678-299 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA NE GA
2006-04-06 678-952 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 VILLA RICA GA
2006-03-20 678-603 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 GRIFFIN GA
2006-03-20 678-621 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 NEWNAN GA
2006-03-16 678-408 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 GRIFFIN GA
2006-03-08 678-651 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J ATLANTA GA
2006-03-08 678-876 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWNAN GA
2006-02-14 678-649 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 LULA GA
2006-02-14 678-871 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 SOCIALCRCL GA
2006-01-20 678-954 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 TELECOM OF GEORGIA, LP - GA 7490 ATLANTA GA
2006-01-19 678-635 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA 7435 MONROE GA
2006-01-19 678-846 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ATLANTA SO GA
2006-01-19 678-951 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NE GA
2006-01-19 678-971 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 GAINESVL GA
2005-12-12 678-997 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GAINESVL GA
2005-12-10 678-373 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NE GA
2005-11-16 678-681 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J ATLANTA GA
2005-11-15 678-345 0–9 XXXall 10 · 7 holders which blocks → METROPCS, INC. 5562 MONROE GA
2005-10-27 678-400 0–9 XXXall 10 · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K CLERMONT GA
2005-10-27 678-765 0–9 XXXall 10 · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K BUFORD GA
2005-10-27 678-943 0–9 XXXall 10 · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GAINESVL GA
2005-10-05 678-914 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2005-08-09 678-716 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E NELSON GA
2005-04-29 678-949 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D ATLANTA GA
2005-03-28 678-897 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 GAINESVL GA
2005-03-22 678-850 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 NEWNAN GA
2005-02-24 678-865 0–9 XXXall 10 · 4 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 GAINESVL GA
2005-01-18 678-703 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF GEORGIA, LP - GA 7490 ATLANTA NW GA
2005-01-18 678-955 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF GEORGIA, LP - GA 7490 ATLANTA NE GA
2005-01-18 678-970 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF GEORGIA, LP - GA 7490 ATLANTA NE GA
2005-01-04 678-899 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ADAIRSVL GA
2005-01-04 678-956 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ADAIRSVL 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
2004-11-19 678-862 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 GAINESVL GA
2004-11-01 678-550 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF GEORGIA, LP - GA 7490 ATLANTA NW GA
2004-10-27 678-863 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINDER GA
2004-10-19 678-928 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GAINESVL GA
2004-09-30 678-608 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA GA
2004-09-30 678-894 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NE GA
2004-09-30 678-909 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2004-09-28 678-619 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA SO GA
2004-08-12 678-707 0–9 XXXall 10 · 5 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 GAINESVL GA
2004-06-11 678-200 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 GAINESVL GA

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.