Blocking Spam Calls - iPhone?
Every day I get spam calls from phone numbers starting with the same 3 digits as my phone number, but every time the last 4 digits are different.
Is there a way to block all calls that start with a certain set of digits instead of having to block a specific, full phone number?
Most, if not all, of those calls are spoofing the callerID information. Blocking a legitimate number because a spoofed number to getting to your phone could be problematic because you would be blocking the wrong thing.
Using your logic, you would be blocking more than one phone number that did not even make the call - and it is possible that a legit call to you that is in that number range would also be blocked - which you probably don't want to do. For example, lets say you blocked NPA 510 and NXX 555. That means all the legitimate phone numbers from 510-555-0000 through 510-555-9999 would be blocked while the call center spoofing the callerID information was actually calling from phone numbers not in that number range.
https://www.fcc.gov/consumers/guides/spoofing-and-caller-id
There's work underway to require authentication (by the communications service providers) so the source phone numbers and the caller ID information are legit. It is fairly complex stuff, but expect to see more on this in the next year or so.
In the mean time, there are some ways to deal with these calls, now. If you don't recognize the number, don't answer the call - let it go to voice mail. If you use your phone in a way that requires you to answer calls whether you recognize the number or not, then at least be sure to not provide any personal information to the machine or person who called.
Scammers are going to scam. Be careful.
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