Is the backend open source?

I wanted to implement my own WHOIS service and it is more complex than it seems.

It is not (I'm not sure where it is going. But here is a gist of that file.

This is in my requirements.txt

git+https://github.com/richardpenman/whois.git@master#egg=python...

And the meat of the file:

    import whois

    """Get WHOIS information for a domain."""
    try:
        domain_info = whois.whois(domain)
    except whois.parser.PywhoisError as e:
        return Response({"message": "Bad request", "details": str(e)}, status=400)

    if domain_info["domain_name"] is None and domain_info["registrar"] is None:
        return Response({"message": "Bad request", "details": f"{domain} not found or registered"}, status=400)

    return {"result": domain_info}