def METHOD_NAME(individual):
    """Return a list of possible domains linked to an individual."""
    domains = set()
    for identity in individual.identities.all():
        # Only check email address to find new affiliations
        if not identity.email:
            continue
        if not EMAIL_ADDRESS_PATTERN.match(identity.email):
            continue
        domain = identity.email.split('@')[-1]
        if domain in domains:
            continue
        dom = _find_matching_domain(domain)
        if dom:
            domains.add(dom)
    return domains