There's a momentary pause... but Rinzler nods. And types out the address! Plus one quick caveat.

Contact prior to attempt. Residence frequently unoccupied.

Where frequently means usually—say, right now, for example. Rinzler tends to wander. And if Rinzler also happens to live down the hall from a yellow-glowing program(mer) he'd prefer to limit Frisk's encounters with... he doubts spelling that part out would go so well.