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Sorry, we have no information about coal.daxa.net. daxa.net is a domain controlled by two nameservers at daxa.net themselves. They are on different IP networks. Incoming mail for daxa.net is handled by two mailservers also at daxa.net. They are on different IP networks. daxa.net has one IP number.

daxa.net
a records
 
+ 203.117.89.49 203.117.89.0/24 AS4657  
+ ---  
ns-soa records
ns1.daxa.net
+ 203.117.89.45 203.117.89.0/24 AS4657  
+ ---  
ns records
ns1.daxa.net
+ 203.117.89.45 203.117.89.0/24 AS4657  
+ ---  
ns2.daxa.net
+ 203.131.230.16 203.131.224.0/20 AS4645  
mx records
ccrelay01.daxa.net
+ 202.145.6.95 202.145.6.0/24 AS17884 iix95.daxa.net
+ --- iix95.daxa.net
ccrelay02.daxa.net
+ 111.221.42.92 111.221.42.0/23 AS17884 zircon2.daxa.net
+ --- zircon2.daxa.net
ip numbers using ptr to this host
202.145.6.71