this SIM5218 AT command manual - Cooking Hacks

SIM5218 Serial AT Command Set
19.25 AT+CDNSGHNAME Query the domain name of given IP
address
Description
The command is used to query the domain name of given IP address.
SIM PIN
YES
References
Vendor
Syntax
Test Command
AT+CDNSGHNAME=
Write Command
AT+CDNSGHNAME=
Responses
OK
Responses
If successful,return:
+CDNSGHNAME: ,,
OK
If fail,return:
+CDNSGHNAME: 0,
ERROR
ERROR
Defined values
A string parameter (string should be included in quotation marks) which indicates the do
ma-in name.
A string parameter (string should be included in quotation marks) which indicates the IP
address corresponding to the domain name.
A numeric parameter which indicates the error code.
10 DNS GENERAL ERROR
A numeric parameter which indicates DNS result index. This value is always 1 if performing
successfully. Currently only the first record returned from the DNS server will be reported.
Examples
AT+CDNSGHNAME=
OK
SIM5218_Serial _ATC_V1.36 385
5/15/2012