SONDA (Solana Observatory for Network Decentralization Analysis): a public, live dashboard for the Solana network. Tracks where validators run, the health of critical infrastructure layers (DoubleZero, Jito BAM, endpoints), and decentralization across mainnet, testnet, and devnet. Validator locations cross-verified against four independent geolocation sources. Built for operators choosing where to host, delegators choosing where to stake, and network research.