Block explorers / testnet-explorer.optimism.io
1 chain listing served by this host.
TLS + post-quantum posture
Posture score85
PQ classPost-quantum hybrid
TLS groupX25519MLKEM768
CipherTLS_AES_128_GCM_SHA256
ALPNh2
Cert subjecttestnet-explorer.optimism.io
Cert issuerWE1
Handshake894 ms
Last probed2026-10-26T03:42:10.011871704Z
Chains served (1)
| Chain | Chain ID | URL | |
|---|---|---|---|
| OP Sepolia Testnet | 11155420 | https://testnet-explorer.optimism.io | View chain → |