Caller ID <i>shouldn&#x27;t</i> be blockable, these days. It&#x27;s a big ridiculous problem that we&#x27;ve defaulted to &quot;you can intrude with communications anonymously&quot; - and phone calls are definitely intrusive.<p>I&#x27;m pretty much a hair away from blocking all calls without caller ID at my house so I can reliably lock out the remaining spam callers.