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A comment on Can We Stop Pretending SMS Is Secure Now?. Parent comment

Re:Can We Stop Pretending SMS Is Secure Now? by baybal2 on Wednesday March 17, 2021 @07:57AM (#26489824)
Banks cannot see if a number is in roaming or not, unless the phone company explicitly tells them through some means.

I so far never heard of anything like this.

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Re:Can We Stop Pretending SMS Is Secure Now? by wealthyyy on Wednesday March 17, 2021 @08:02AM (#26489862)
How come you forget about HLR?

Banks can see. There are lot of APIs on the web that provides this capability.

One example,

https://www.messagebird.com/lookup/

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Re:Can We Stop Pretending SMS Is Secure Now? by baybal2 on Wednesday March 17, 2021 @08:04AM (#26489886)
That looks more interesting. Never heard of such APIs being sold for more than a single operator.

How many operators in the world sell them this access?

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