Privacy statement

Last updated 23/11/2017

The personal information we collect

Email addresses and domain names

When you subscribe to receive email alerts for a domain, we store a mapping between your email address and that domain.

When an atom feed is requested for a domain, that domain is recorded to allow us to generate the feed with new, updated or deleted resolvable domain names.

We categorise both the email address and domain name as "personal information" as either may be - for instance "" or "". Obviously anyone can request information about a particular domain.


The logs generated by the dnstwister web application are archived in Papertrail. They will only be reviewed by the developer to troubleshoot production-site issues. These logs will never be shared with any other party.


dnstwister does not set cookies, although one or more of the third-party services mentioned below may.

How we store your personal information

Your personal information is stored with a third-party, Heroku, along with all other information used to operate dnstwister.

How we use your personal information

Your personal information will be used solely for purpose of providing the service(s) you request from dnstwister.

If you unsubscribe from receiving email alerts for a domain, we permanently delete this mapping. If there are no requests for the Atom feed for a domain for three days then that domain's information is also permanently deleted.

Law enforcement

It is possible that we may be required by court order to provide information about our customers to third parties. We may also be required to provide information pursuant to law, applicable regulation, subpoena or other legal process. It is our policy to ensure adherence to the due process of law in all such legal requests. If we are required to provide information under these circumstances, we will, whenever possible, attempt to inform users whose information we are compelled to produce.

Third-party services

dnstwister utilises a number of third-party services, each with its own privacy policy or statement.


dnstwister is hosted (including data storage) on Heroku.

Heroku Privacy Statement.

Google Analytics

dnstwister uses Google Analytics to monitor site usage.

Google Privacy Policy


dnstwister uses CloudFlare for HTTPS and caching.

CloudFlare Privacy & Security Policy


dnstwister uses Papertrail for log archiving.

Papertrail Software Services Agreement