The Etherscan Testnet API service URL Endpoints have been updated to the following:


ROPSTEN Testnet 


Home Page: https://ropsten.etherscan.io/apis

New API Endpoint : http://api-ropsten.etherscan.io/api?xxxx

Old API Endpoint : http://ropsten.etherscan.io/api?xxxx



KOVAN Testnet 


Home Page: https://kovan.etherscan.io/apis

New API Endpoint : http://api-kovan.etherscan.io/api?xxxx

Old API Endpoint : http://kovan.etherscan.io?api?xxxx



RINKEBY Testnet 


Home Page: https://rinkeby.etherscan.io/apis

New API Endpoint : http://api-rinkeby.etherscan.io/api?xxxx

Old API Endpoint : http://rinkeby.etherscan.io/api?xxxx



Please update your applications to use the New API endpoints above. The previous (old)  API endpoints will cease to function after March 31, 2018. There are NO changes to the Mainnet API end points 



Thank you

- Team Etherscan