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| * use a different form of 2FA, like OTP (since SMS 2FA is neither [[https://www.cnet.com/news/facebooks-two-factor-authentication-with-phone-numbers-puts-security-and-privacy-at-odds/|private]], nor is it all that [[https://www.howtogeek.com/310418/why-you-shouldnt-use-sms-for-two-factor-authentication/|secure]] | * use a different form of 2FA, like OTP (since SMS 2FA is neither [[https://www.cnet.com/news/facebooks-two-factor-authentication-with-phone-numbers-puts-security-and-privacy-at-odds/|private]], nor is it all that [[https://www.howtogeek.com/310418/why-you-shouldnt-use-sms-for-two-factor-authentication/|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) |
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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, , , , Apple, 3, 3, 2023-08, , 1, 2023-08, Had to resend code three times. Also worked on first attempt. Note: after 3 times if it still doesn't work will get a "Too many codes sent" and then be blocked for some time. Will then need to use "Call" instead of "Send new code" |
Amazon, , , , , 1, 2025-09, American Express, , 1, 2023-08, , 6, 2025-09,SMS doesn't work, but 2FA by email does. Apple, 3, 4, 2025-09, , 1, 2023-08, SMS doesn't work but call ok. |
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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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| Bolt, , 1, 2025-09, , , , | |
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| CapitalOne, , 1, 2023-08, , 2, 2025-02, Had to add number to profile 1st before using | 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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| CIBC, , 1, 2024-09, , 1, 2024-12, Short code 242227. The success might be due to the number being ported in but it seems that you get blacklisted eventually. Call option available +1 (888) 872-2422 CIBC Bank USA, , 1, 2024-09, , , , Short code 32858 (Authentify). Note that this is the US branch (us.cibc.com) and they are known to accept Canadian numbers for 2fa. The number is ported in. |
CIBC, , 1, 2024-09, , 2, 2025-09, Short code 242227. The success might be due to the number being ported in but it seems that you get blacklisted eventually. Verification via call from +1 (888) 872-2422 works though if you add number as a home phone number. CIBC Bank USA, , 2, 2025-09, , , , Short code 32858 (Authentify). Note that this is the US branch (us.cibc.com) and they are known to accept Canadian numbers for 2FA. Worked for both ported and native numbers. Took 3 minutes for the SMS to arrive. |
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| Desjardins, , 1, 2023-11, , , , | Desjardins, , 99+, 2025-12, , , , Desjardins Verified by Visa, , , , , 50+, 2025-11, |
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| EQBank, , , , 1, , 2022-12, Phone agent explicitly said VoIP numbers are excluded | EQ Bank, , , , 1, 1, 2025-09, Support agent explicitly said VoIP numbers are excluded; but recommended email 2FA as an alternative solution |
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| Fidelity Rewards Visa (Elan/US Bank), , many, 2025-06, , , , | |
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| HOVR, , 1, 2025-09, , , , | |
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| Interactive Brokers, 1, 1, 2022-11, , , , Takes longer than other providers to deliver the code. Try again if no deliver <30s | Interactive Brokers, 1, 2, 2025-09, , , , Takes longer than other providers to deliver the code. Try again if no deliver <30s |
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| Ko-Fi, , , , , 1, 2026-01, Rejected, error shown as: "Phone number not in correct format." | |
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| Lyft, 1, 1, 2022-04, 1, 1, 2024-08-27, | LinkedIn, , , , , , , Lyft, 1, 2, 2025-09, 1, 1, 2024-08-27, SMS doesn't work but call ok. |
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| Manulife ID, , 1, 2025-09, , , , | |
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| OfferUp, 1,, 2025-07-02, 1, , 2025-07-02, first phone number was rejected but second number worked | |
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| PenFed Credit Union, , many, 2025-06, , , , | |
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| 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, , , , |
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| Simplii Financial, , 2, 2022-12, , 2, 2023-02, square sites (ie vendor.square.site), , 0, , , 1,2021-11, Steam, , 1, 2022-04, , 1, 2022-07-30, |
Simplii Financial, , 3, 2025-09, , 2, 2023-02, Supports SMS 2FA after registering number as a mobile phone number on profile Square sites (ie vendor.square.site), , 0, , , 1,2021-11, Steam, , 2, 2025-11, , 1, 2022-07-30, |
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| Tangerine Bank, , 2, 2024-12, , 2, 2024-09, SMS does not work reliably. Choosing home phone to receive the security code via a phone call does fix the problem. If you prefer to use SMS: The number they send the SMS from is 864732. I added the number in my contact and when trying to authenticate I found that if I text "help" or "status" to that number and then I re-click "re-send sms" it does actually seem to come reliably after a few seconds. It's finicky but it's worked every time. | Tangerine Bank, , 2, 2024-12, , 3, 2025-03, SMS does not work reliably. Choosing home phone to receive the security code via a phone call does fix the problem. If you prefer to use SMS: The number they send the SMS from is 864732. I added the number in my contact and when trying to authenticate I found that if I text "help" or "status" to that number and then I re-click "re-send sms" it does actually seem to come reliably after a few seconds. It's finicky but it's worked every time. |
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| Telegram (CA Number), 4, 11, 2021-12, , , , | Telegram (CA Number), 4, 12, 2025-09, , , , |
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| Tipalti, , 1, 2025-09, , , , | |
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| Uber, , 0, , , 1, 2021-08, | Uber, , 1, 2025-09, , 1, 2021-08, SMS doesn't work but call ok. |
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| Venmo, , , , 2, , 2024-08-27, Contacted support and they were adamant that they only support mobile numbers from cell carriers | Venmo, , , , 2, , 2025-03-27, Contacted support and they were adamant that they only support mobile numbers from cell carriers |
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| Walmart.com, , 0, , ,2, aug 7 25, | |
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| WhatsApp, 1, 1, 2023-07, 4, 2, 2024-10-27, Tried registering with WhatsApp with a US-based number today. Failed with message: "<your number> is not a valid mobile number for the country United States". Another jmp user reported the same thing yesterday. Canadian numbers also get the same message | WhatsApp, 1, 2, 2025-09, 4, 2, 2024-10-27, Tried registering with WhatsApp with a US-based number today. Failed with message: "<your number> is not a valid mobile number for the country United States". Another jmp user reported the same thing yesterday. Canadian numbers also get the same message |
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: