While subscan.io does not support Encointer, this repo provides a basic block explorer.
The backend runs a custom subsquid indexer that stores data in Postgresql and provides the GraphQL endpoint for the frontend.
The frontend is a Nuxt.js app that uses Apollo Client to query the GraphQL endpoint of the backend.
A demo server is running at http//encointer-explorer.metaspan.io.
Please note, this is a demo server and indexing may be behind the latest block.