• ns1 atlanta, GA
• ns2 hanover, NJ
• ns3 richardson, TX
• ns4 freemont, CA
• ns5 london, UK
• ns6 frankfurt
• ns7 bengaluru

optimum for us coverage ns1,ns4

Yes, selecting based on target areas makes sense. Here's how I'd approach it based on different scenarios:

US-focused operations: - ns4 (Fremont) - West Coast - ns1 (Atlanta) - East Coast Perfect 2-server minimum setup for US coverage

US + Europe operations: - ns4 (Fremont) - West Coast US - ns1 (Atlanta) - East Coast US - ns6 (Frankfurt) - Central Europe Good 3-server setup covering both continents

Global operations: - 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.