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I skimmed the post but couldn't find out how one would know what provider to use. I guess you could ask whoever you're texting with but that's not very reliable

I skimmed the post but couldn't find out how one would know what provider to use. I guess you could ask whoever you're texting with but that's not very reliable, not everyone knows, and people change their provider.

alfredosequeida 5y ago
This is a good point. With that said, one does not necessarily need to know the provider, it just makes the process more direct. An alternative approach is to send a message to every provider using the same number. The invalid addresses will likely bounce back, but the correct match will go through.
- pietromenna 5y ago
  I’m wondering if it is possible to find a list of provider emails from other countries such as BraZil.
  - alfredosequeida 5y ago
    I mentioned this website in the post. It has a list of providers for different countries (Brazil included). I don't know how up-to-date they are, but it might be a good starting point. You can also always try contacting the carriers directly. https://email2sms.info/ https://email2sms.info/
    - pietromenna 5y ago
      Thank you, what I missed is how you do to find out for other providers. In Brazil you covered 50% of the carriers. But how can I help you to find out the other ones and update the information for you. Should I contact the providers and ask for it and send a Pull Request? Again, thank you for putting this into a post!
- barbazoo 5y ago
  Definitely don't use your Gmail account to send them then unless you want to end up as one of those people that got their account suspended.
ebzlo 5y ago
Twilio has an API to identify the provider. https://www.twilio.com/docs/lookup/api https://www.twilio.com/docs/lookup/api Still costs money, but if you're sending a lot of messages, this would substantially reduce the costs.
- rsync 5y ago
  "Twilio has an API to identify the provider ..." curl -s -X GET "https://lookups.twilio.com/v1/PhoneNumbers/$number?Type=carrier&Type=caller-name" -u $accountsid:$authtoken | /usr/local/bin/jq '.'
- colinmhayes 5y ago
  Just try them all...
- remram 5y ago
  If you're sending a lot of messages through one of those, you can expect to be blocked pretty quickly unfortunately.
cookie_monsta 5y ago
Some countries allocate set prefixes to carriers which can be reliable if number porting doesn't enter the equation: https://en.m.wikipedia.org/wiki/List_of_mobile_telephone_prefixes_by_country https://en.m.wikipedia.org/wiki/List_of_mobile_telephone_pre...
- ant6n 5y ago
  Until the number gets ported to a different provider..
  - cookie_monsta 5y ago
    Oh, wow. Which is why my last 7 words were "if number porting doesn't enter the equation"
- barbazoo 5y ago
  That list isn't very useful in this context unfortunately. There is no reliable mapping between area code and provider in North America.
  - cookie_monsta 5y ago
    That's why my first two words were "some countries". The US is but one.
deleted 5y ago
[deleted]
rsync 5y ago
"I skimmed the post but couldn't find out how one would know what provider to use." I personally do carrier lookups in the unix shell with a 'curl' command using the Twilio API (see my other comment under you). However, you can just look this information up on a number of different websites: https://www.freecarrierlookup.com/ https://www.freecarrierlookup.com/ ... et. al ...

alfredosequeida 5y ago

This is a good point. With that said, one does not necessarily need to know the provider, it just makes the process more direct. An alternative approach is to send a message to every provider using the same number. The invalid addresses will likely bounce back, but the correct match will go through.

pietromenna 5y ago
I’m wondering if it is possible to find a list of provider emails from other countries such as BraZil.
- alfredosequeida 5y ago
  I mentioned this website in the post. It has a list of providers for different countries (Brazil included). I don't know how up-to-date they are, but it might be a good starting point. You can also always try contacting the carriers directly. https://email2sms.info/ https://email2sms.info/
  - pietromenna 5y ago
    Thank you, what I missed is how you do to find out for other providers. In Brazil you covered 50% of the carriers. But how can I help you to find out the other ones and update the information for you. Should I contact the providers and ask for it and send a Pull Request? Again, thank you for putting this into a post!
barbazoo 5y ago
Definitely don't use your Gmail account to send them then unless you want to end up as one of those people that got their account suspended.

ebzlo 5y ago

Twilio has an API to identify the provider. https://www.twilio.com/docs/lookup/api https://www.twilio.com/docs/lookup/api Still costs money, but if you're sending a lot of messages, this would substantially reduce the costs.

rsync 5y ago
"Twilio has an API to identify the provider ..." curl -s -X GET "https://lookups.twilio.com/v1/PhoneNumbers/$number?Type=carrier&Type=caller-name" -u $accountsid:$authtoken | /usr/local/bin/jq '.'
colinmhayes 5y ago
Just try them all...
remram 5y ago
If you're sending a lot of messages through one of those, you can expect to be blocked pretty quickly unfortunately.

cookie_monsta 5y ago

Some countries allocate set prefixes to carriers which can be reliable if number porting doesn't enter the equation: https://en.m.wikipedia.org/wiki/List_of_mobile_telephone_prefixes_by_country https://en.m.wikipedia.org/wiki/List_of_mobile_telephone_pre...

ant6n 5y ago
Until the number gets ported to a different provider..
- cookie_monsta 5y ago
  Oh, wow. Which is why my last 7 words were "if number porting doesn't enter the equation"
barbazoo 5y ago
That list isn't very useful in this context unfortunately. There is no reliable mapping between area code and provider in North America.
- cookie_monsta 5y ago
  That's why my first two words were "some countries". The US is but one.

deleted 5y ago

[deleted]

rsync 5y ago

"I skimmed the post but couldn't find out how one would know what provider to use." I personally do carrier lookups in the unix shell with a 'curl' command using the Twilio API (see my other comment under you). However, you can just look this information up on a number of different websites: https://www.freecarrierlookup.com/ https://www.freecarrierlookup.com/ ... et. al ...