Thank you for using this site! I'm so glad you're developing on Cardano. I want to assure you that adaex has a long tradition since ITN, is and will always be available and will only get better as his feature-richer brother adapools.org :) It will always be free and if there are any ads on the site, it will always be the minimum necessary to drive sustainability.
testnet - https://testnet.adaex.org/
mainnet - https://adaex.org/
address detail - https://adaex.org/address/addr1qxb9n...5gxq34cu32
block detail - https://adaex.org/block/block_hash
transaction detail - https://adaex.org/transaction/tx_id
asset detail - https://adaex.org/token/asset1_fingerprint
policy detail - https://adaex.org/policy/policy_id