I am building an open federation service because I would like to offer some kind of infrastructure for developers and service for users. I also have further plan to build other application on top of it. It is totally free for everybody, please feel free to use it. You can try it at https://www.fedcloud.info/
For now:
1. You can use it to claim a name(asterisk)fedcloud.info stellar address and associate your stellar account id with it
2. You can use it to check the stellar account id using the name(asterisk)fedcloud.info stellar address in the web page
3. You can find the FEDERATION_SERVER in stellar.toml file on https://www.fedcloud.info/.well-known/stellar.toml
4. You can use https://www.fedcloud.info/federation endpoint for stellar account id lookup in your application (wallet etc.). For example, sending request to https://www.fedcloud.info/federation?q=jed(asterisk)fedcloud.info&type=name will get {"detail":"can not find any result"} response
5. You can use https://www.fedcloud.info/federation endpoint to do reverse federation lookup
More features are in progress.
IMPORTANT UPDATE:
The project has been rename to FedCloud, and the domain has been changed from https://www.federationcloud.info/ to https://www.fedcloud.info/, because name(asterisk)fedcloud.info is shorter, so it must be easier than name(asterisk)federationcloud.info for people to type and remember.