• ns1 Atlanta, GA
• ns2 Hanover, NJ
• ns3 Richardson, TX
• ns4 Freemont, CA
• ns5 London, UK
• ns6 Frankfurt
• ns7 Bengaluru

• ns4 (Fremont) - West Coast
• ns1 (Atlanta) - East Coast

Perfect 2-server minimum setup for US coverage

• ns4 (Fremont) - West Coast US
• ns1 (Atlanta) - East Coast US
• ns6 (Frankfurt) - Central Europe

Good 3-server setup covering both continents

• ns4 (Fremont) - West Coast US & Pacific
• ns1 (Atlanta) - East Coast US
• ns6 (Frankfurt) - Europe
• ns7 (Bengaluru) - Asia/India

Optimal 4-server setup for global coverage

The other servers (Hanover, Richardson, London) become less critical because:

• Hanover overlaps with Atlanta
• Richardson overlaps with both US coasts
• London is less optimal than Frankfurt for Europe

This approach maximizes coverage while keeping the nameserver count manageable.