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Show HN: Dtmf.io – virtual phone numbers from 50 countries, and SIMs in the UK

dtmf.io

21–28 of 28 posts

Re: Show HN: Dtmf.io – virtual phone numbers from 50 countries, and SIMs in the UK

#22
post #20
post #15

Earlier quoted context omitted.

We comply with these regulations. To get a German landline number via our service, you must provide proof of an address in the same locality, as well as proof of ID. We supply this to the regulator, and once they approve it, we provide the number. Many countries do not have these requirements, and for these countries you can just "click and buy".

Out of curiosity how do you verify these things?

We only verify them for completeness; then we submit them to the relevant regulator and wait for them to give the documents the OK. We don't assign the phone number until we get the OK from the regulator.

Re: Show HN: Dtmf.io – virtual phone numbers from 50 countries, and SIMs in the UK

#24
post #5

The monthly charges seem reasonable. I didn't see any info on the site about inbound call pricing, service and limitations. Specifically: - per-minute charges? - # simultaneous channels? - delivery options? (e.g. can I register a SIP device on your gateway, or can you accept a SIP URI)

Thanks - we'll add this information. The per-minute charges are fixed for a given number type for inbound calls. They're cheapest for landline numbers (e.g. just under EUR 0.01 per minute for a UK landline), very slightly more expensive for mobile numbers, and quite a lot more expensive for toll-free numbers (since you're paying the cost for the caller). For outbound calls, it depends where you're calling. There are…

Thanks for the clarification. It makes sense. Not having that info available might discourage some people from signing up, but of course you should test it :)

Your service seems similar to DIDLogic, except that:

- there's no monthly minimum spend

- you're explicitly open to small users and short term users (not just corporates and telcos)

- you offer SMS (not just voice)

Re: Show HN: Dtmf.io – virtual phone numbers from 50 countries, and SIMs in the UK

#25

How does this work? Is there an app?

You rent a virtual mobile, landline or toll-free phone number, or a physical SIM, via the website or Android app. The phone number is then yours as long as you keep paying the rental fee. (After you delete it or stop paying, we don't give it to anyone else - we return the number to the upstream phone networks who will, as with all phone numbers, 'quarantine' it for many months and then eventually re-use it.)

You can then send and receive SMS, make and receive calls and send faxes using the numbers via the website or the Android app.

Pro accounts can also make and receive calls via SIP.

Re: Show HN: Dtmf.io – virtual phone numbers from 50 countries, and SIMs in the UK

#27
post #25

How does this work? Is there an app?

You rent a virtual mobile, landline or toll-free phone number, or a physical SIM, via the website or Android app. The phone number is then yours as long as you keep paying the rental fee. (After you delete it or stop paying, we don't give it to anyone else - we return the number to the upstream phone networks who will, as with all phone numbers, 'quarantine' it for many months and then eventually re-use it.) You can…

Any plans for an iPhone app?

Re: Show HN: Dtmf.io – virtual phone numbers from 50 countries, and SIMs in the UK

#28
post #25

Earlier quoted context omitted.

You rent a virtual mobile, landline or toll-free phone number, or a physical SIM, via the website or Android app. The phone number is then yours as long as you keep paying the rental fee. (After you delete it or stop paying, we don't give it to anyone else - we return the number to the upstream phone networks who will, as with all phone numbers, 'quarantine' it for many months and then eventually re-use it.) You can…

Any plans for an iPhone app?

The app actually supports iOS already (it's built with Flutter) but we changed legal entity and made a mistake with the app transfer process, so it's temporarily unavailable. We're hoping to have it back on the store in the next week or so.
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