Continuing the discussion from Change name that shows when I call other users:
Rather than cluttering the OP’s original thread, I’m replying as a linked thread here. The OP asked a specific question and received the correct answer as far as what Republic is able to do. Follow-up discussion, in my opinion, belongs in its own thread.
The first thing one needs to accept is what is displayed on the receiving party’s phone is determined by their carrier and/or their device. The only thing transmitted with a phone call in the U.S. is Caller ID (telephone number) This isn’t unique to Republic, it’s the way the PSTN (public switched telephone network) is designed to work.
If something other than Caller ID is displayed on the receiving party’s end it’s coming from their carrier or their device. For example, if one is in the receiving party’s contacts, typically that information is displayed. And, it’s not just smartphones or mobile phones generally that are capable of storing contacts. The cordless phones I use with my “landline” are capable of storing contacts also.
Otherwise if the receiving carrier is doing something called a dip, CNAM is typically displayed. Dips are not free, so not all carriers provide the service. Republic (and most mobile carriers) do not. I’m aware some other mobile carriers will do so usually as an optional add-on. Most true landlines and fixed VoiP (Voice over Internet Protocol) services do. Nomadic VoIP is a mixed bag. Google Voice is an example of a nomadic VoIP service that doesn’t provide CNAM. If one has a “landline” provided by their cable company, that would be an example of fixed VoIP and probably does provide CNAM.
CNAM information from a dip is derived from matching a database. In other words, the receiving carrier takes the Caller ID, looks that number up in a database, matches the transmitted Caller ID to the CNAM per the database and, finally, displays that to the receiving party’s device. The huge challenge here is there is no central database used by all carriers providing CNAM. There are multiple vendors whose databases are of varying quality. Here are a couple of examples using my Republic number:
This first example (from a facility provided by a VoIP service I do business with) shows the CNAM for my Republic number as being Miami, FL. If their carrier uses this database, that’s what the party called will see.
The second example is from Twilio’s carrier lookup tool publicly available here: https://www.twilio.com/lookup. Because it uses a different database, it shows CNAM for my number as Saveology (a now defunct local business that “owned” the number before me). If the receiving carrier uses this database, that’s what their customers will see.
Neither Republic or other carriers have any direct control over what gets displayed at the other end. It’s entirely dependent on where the receiving carrier gets its information. As the examples I shared show, the quality of that information will vary depending on the database used for the dip. What Republic can do is broadcast what its customers would like to see for their numbers in these databases. That’s the process described here: How to Fix Displayed Caller ID – Republic Help. The good frequently updated databases will pick this information up quickly. The less good ones may never pick it up.
Bottom line, when one adds in the relative ease of Caller ID spoofing, CNAM is increasingly useless as a means of identifying oneself to those they call. If you’re calling someone frequently, it would be far better for them to add you as a contact.