Why am I getting calls from these strange numbers?

If you're getting inbound calls from a strange number that doesn't look like a real phone number, check to see if it's one of the numbers below. Sometimes, the originating carrier for a call will pass through one of the following words. Twilio converts this word to digits and uses those digits as the From parameter.

RESTRICTED 737 874-2833
BLOCKED 256-2533
UNKNOWN 856-6696
ANONYMOUS 266696687
UNAVAILABLE 86282452253
EMPTY 464
No Caller ID 464

 

Notice: These statuses are more common when the caller is calling from a VoIP service.

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