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Sample of services with successes and failures: {{{ #!CSV , Service, Number of Successes, Last known success, Number of Failures, Last known failure Bank of America, 1, 2021-08,, Doordash, 0, , 1, 2021-03 Google (account verification), 1, 2021-08 , 1, 2021-08 Lyft, 0,, 1, 2021-08 Microsoft MFA, 50, 2021-10-12, 10, 2021-10-12 Questrade, 1, 2021-07-06, 0,, TD, 1, 2021-09,0, Twitter,,,,, Uber, 0, , 1, 2021-08 WealthSimple Cash, 1, 2021-07, 1,,2021-07 Walmart.ca, 0,, 2, 2021-08 }}}  | 
Some companies maintain secret lists of phone numbers which they prohibit for new signups. If you run into this problem, you can:
- try again (sometimes this solves the issue)
 - contact the company, letting them know of the issue
 - use a different form of 2FA, like OTP (since SMS 2FA is neither private, nor is it all that secure
 - find an alternative to that company's services
 - use a service specifically tailored to SMS 2FA instead, like https://crypton.sh/ or https://smsprivacy.org/ (their numbers are not on these block lists, but they lack certain other features of a JMP phone number)
 
Sample of services with successes and failures:
