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Sorry, we have no information about 211-234-119-250.kidc.net. kidc.net is a domain controlled by two nameservers on the same IP network. Incoming mail for kidc.net is handled by two mailservers at kidc.net themselves. They are on the same IP network. kidc.net has one IP number.

kidc.net
a records
 
+ 211.233.23.157 211.233.0.0/18 AS3786  
+ ---  
ns-soa records
ns1.kidc.net
+ 203.248.250.24 203.248.128.0/17 AS3786 -
+ --- -
ns records
ns1.kidc.net
+ 203.248.250.24 203.248.128.0/17 AS3786 -
+ --- -
ns2.lgdacom.net
+ 203.248.240.31 203.248.128.0/17 AS3786 ns2.dacom.net
+ --- ns2.dacom.net
+ --- ns2.dacom.co.kr
+ --- ns2.lgdacom.co.kr
+ --- ns2.may.bora.net
+ --- -
+ --- ns2.bora.net
mx records
sniper1.kidc.net
+ 211.174.55.162 211.174.48.0/20 AS3786 sniper1.coconut.co.kr
+ --- sniper1.coconut.co.kr
sniper2.kidc.net
+ 211.174.55.163 211.174.48.0/20 AS3786 sniper2.coconut.co.kr
+ --- sniper2.coconut.co.kr
ip numbers using ptr to this host
211.234.119.250