I'm pretty sure there was a DNS record type for telephone numbers, but it was never picked up for use by anyone. If it exists, it would be in this document: ht

I'm pretty sure there was a DNS record type for telephone numbers, but it was never picked up for use by anyone. If it exists, it would be in this document: http://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml http://www.iana.org/assignments/dns-parameters/dns-parameter... I quickly found record types for ISDN and X.25, but I don't have time to pick through for PTSN. Edit: See also: http://tools.ietf.org/html/rfc1183#section-3.2 http://tools.ietf.org/html/rfc1183#section-3.2