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: 162
Hash: 331c88b5ce6ddab3c7dab0460bcdfe9bade2388a2a51fa045526277d72ec8ab7
Previous block: 5820d1a4ab30522188221177500a6a83a28e25cf15e443b6b5016839ac91289c
Next block: 0f69b25a1f00a35939424a15d9591016a6dd8fdd7f92de8aef7dbea8a188a9f1
Weight: 912
Versionhex: 30000003
Version: 805306371
Time: 1544074760
Stripped size: 228
Size: 228
Nonce: 2
Merkle root: a1faf4f84ea1187d46ffd40edc1e07d9cf2d153da4ea47d4b19aafd27c1a1c20
Median time: 1544074759
Difficulty: 4.656542373906925e-10
Confirmations: 40
Chainwork: 0000000000000000000000000000000000000000000000000000000000000146
Bits: 207fffff