function 'TXTCIDNAME'
[Synopsis] TXTCIDNAME looks up a caller name via DNS. [Description] This function looks up the given phone number in DNS to retrieve the caller id name. The result will either be blank or be the value found in the TXT record in DNS. [Syntax] TXTCIDNAME(number[,zone-suffix]) [Arguments] zone-suffix If no <zone-suffix> is given, the default will be 'e164.arpa'
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