def _refang_common(ioc):
    """Remove artifacts from common defangs.

    :param ioc: String IP/Email Address or URL netloc.
    :rtype: str
    """
    return ioc.replace('[dot]', '.').\
               replace('(dot)', '.').\
               replace('[.]', '.').\
               replace('(', '').\
               replace(')', '').\
               replace(',', '.').\
               replace(' ', '').\
               replace(u'\u30fb', '.')