@Override
    public boolean match(final Cookie cookie, final CookieOrigin origin) {
        final String host = cookie.getDomain();
        if (host == null) {
            return false;
        }
        final int i = host.indexOf('.');
        if (i >= 0) {
            final String domain = host.substring(i);
            if (!this.localDomainMap.containsKey(domain)) {
                if (!verifyHost(host)) {
                    return false;
                }
            }
        } else {
            if (!host.equalsIgnoreCase(origin.getHost())) {
                if (!verifyHost(host)) {
                    return false;
                }
            }
        }
        return handler.match(cookie, origin);
    }
Never matches if the cookie's domain is from the blacklist.
httpclient5/src/main/java/org/apache/hc/client5/http/impl/cookie/PublicSuffixDomainFilter.java