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Another fun one I learned about recently: `e164.arpa` is a reserved domain for E.164 phone number to Internet address lookups[1]: you can query it for NAPTR rec
by woodruffw 4y ago
Another fun one I learned about recently: `e164.arpa` is a reserved domain for E.164 phone number to Internet address lookups[1]: you can query it for NAPTR records, which tell the client how to initiate a call over the Internet (via SIP) instead of over PSTN.
[1]: https://www.ietf.org/rfc/rfc2916.txt https://www.ietf.org/rfc/rfc2916.txt
- spc476 4y agoI worked in that space for over a decade. While it's true, the use of E.164 in production was never done (usually, it's some subdomain from the Oligarchic Cell Phone companies). Second, it's never free. Nothing on the telephony network is free. Third, you get back data that includes a regex on how to transform the other data into something you can use---very convoluted.
- ehPReth 4y agoToo bad; this would be really cool to 'own' your E.164 domain in some cases
- indigodaddy 4y agoe164.arpa was never used in production? By whom exactly? Because I can tell you it’s heavily in use currently by many large telecom/voip companies
- spc476 4y agoVerizon for one, at least in the US. I know I used e164.arpa for testing purposes, until new management came in and demanded we use the domain we use in production for testing (because, well, production, I guess? Keep the configs as the same as much as possible?). Now that I've name names (or a name), how about you? Who uses e164.arpa?
- indigodaddy 4y agoVoxeo/Aspect/Alvaria