What is the block query URL？

BTC block query address: https://btc.com/
ETH & ERC 2.0 token block query address: https://etherscan.io/
Query address of USDT block: https://omniexplorer.info/
XRP block query address: https://xrpcharts.ripple.com/#/graph/
LST block query address: http://123.56.25.214 :3001/#!/
NEO block query address: https://neotracker.io/