The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mressCpnG

Height: 185
Hash: 4eb7d72c389ac14861c74fdbffb58f3f0a6b7dac80b5075695a58ab733d675b3
Previous block: 090590024a081cbe97b061a0bbea2ec2f579e58e8f35eeecb636a55d647d11b7
Next block: 3393e8739f8789cf3d271a7bc8ddf81b36f121e8a582b78a5153f5798ba94197
Weight: 912
Versionhex: 30000003
Version: 805306371
Time: 1544074764
Stripped size: 228
Size: 228
Nonce: 0
Merkle root: 04e82cef6ce7363deb7c2c894f18fa1aa392fc0d20ac0e89dfda34aa63115ef6
Median time: 1544074763
Difficulty: 4.656542373906925e-10
Confirmations: 17
Chainwork: 0000000000000000000000000000000000000000000000000000000000000174
Bits: 207fffff