Caller ID showing "+[phonenumber];+rn=+[digits]"

[brendan_orr]

For about 6 months now I've been seeing something like

8005551234;+rn=+1800555

come up in caller ID instead of just the phone number. The first part before the semicolon is correct but the odd thing is the beginning of the phone number at the end is not always the same. Now before you say that it is a spoofed phone number from a scammer I will say that this is coming from legitimate people that I know. It is only coming from calls originating from landlines and not mobile phone numbers.

My thought is that it could have something to do with call forwarding but I let my service expire completely before reactivating my phone as that usually resets call forwarding back to straight talk's voicemail instead of my Google voice number.

Has anybody else seen this and what was the fix?