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| * use a service specifically tailored to SMS verification instead, like https://crypton.sh/ or https://juicysms.com/ // (their numbers might not be on these block lists, but they lack certain other features of a JMP phone number) | * use a service specifically tailored to SMS verification instead, like https://buynumber.io/ or https://crypton.sh/ or https://juicysms.com/ // (their numbers might not be on these block lists, but they lack certain other features of a JMP phone number) |
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| American Express, , 1, 2023-08, , 6, 2025-09, | American Express, , 1, 2023-08, , 6, 2025-09,SMS doesn't work, but 2FA by email does. |
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| Bank of Montreal (BMO), , 1, 2026-04, , , , SMS does not work. Call will receive 2FA but the codes won't work on the website. You must contact them for them to specifically unblock your number as they block all VOIP by default. They removed all non-phone 2FA methods sometime in 2025-11 so getting your number whitelisted is mandatory now | |
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| Canada Revenue Agency, , 2, 2025-03, , , , +1 (844) 549-8776 CapitalOne, , 2, 2025-08, , 4, 2025-08, Had to add number to profile 1st before using. | Worked for me 'til recently then re-entering number in profile seemed to succeed but on refresh said number cannot receive SMS -- called support -- they fixed it although web interface didn't show that, but am now getting alerts |
Canada Revenue Agency, , 2, 2025-03, , , , +1 (844) 549-8776. TOTP available CapitalOne, , Multiple, 2026-01, , 4, 2025-08, Had to add number to profile 1st before using. | Worked for me 'til recently then re-entering number in profile seemed to succeed but on refresh said number cannot receive SMS -- called support -- they fixed it although web interface didn't show that, but am now getting alerts. Different user reports: Working normally as of 01/2026. |
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| Claude.ai, , , , 1, , 2026-01, Verification was required even after being invited to a company's pro plan. I was able to use a coworker's phone, so re-using phone numbers may be possible. | |
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| Desjardins, , 1, 2023-11, , , , | Desjardins, , 99+, 2025-12, , , , Desjardins Verified by Visa, , , , , 50+, 2025-11, |
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| Ko-Fi, , , , , 1, 2026-01, Rejected, error shown as: "Phone number not in correct format." | |
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| LinkedIn, , , , , , , | |
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| Revenu Québec, , , , , 1, 2025-04, Allows 2fa by email | Revenu Québec, , , , , 2, 2026-03, Allows 2fa by email. If you use the new government authentication service then it only allows 2fa by email |
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| Schwab, , 1, 2023-06, , , , Signal, 3, 1, 2023-04, , , , |
Schwab, , 1, 2023-06, ,1 ,2026-03 , Supports SMS alerts but not 2FA SMS Signal, 4, 1, 2026-01, , , , |
Context: https://blog.jmp.chat/b/2022-sms-account-verification
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)
- use a US number for US services, and a Canadian number for Canadian services (shortcodes don't work across borders unless licensed on both sides)
- find an alternative to that company's services
- use a service specifically tailored to SMS verification instead, like https://buynumber.io/ or https://crypton.sh/ or https://juicysms.com/ (their numbers might not be on these block lists, but they lack certain other features of a JMP phone number)
- Ask JMP support about the Premium+ route
Sample of services with successes and failures: