go
mx2.3domain.hk, mx1.3domain.hk, ns2.3domain.hk, www.3domain.hk, ns3.3domain.hk and at least two other hosts are subdomains to this hostname.

hk
a records
 
+ 203.119.2.28 203.119.2.0/24 AS9735  
+ ---  
ns-soa records
ns1.hkirc.net.hk
+ 203.119.2.18 203.119.2.0/24 AS9735 ns1.hkdnr.net.hk
+ --- ns1.hkdnr.net.hk
ns records
adns1.berkeley.edu
+ 128.32.136.3 128.32.0.0/16 AS25 -
+ --- -
adns2.berkeley.edu
+ 128.32.136.14 128.32.0.0/16 AS25 -
b.dns.tw
+ 210.201.138.58 210.201.128.0/18 AS7482 nk210-201-138-58.cl.static.apol.com.tw
+ --- nk210-201-138-58.cl.static.apol.com.tw
ns1.hkirc.net.hk
+ 203.119.2.18 203.119.2.0/24 AS9735 ns1.hkdnr.net.hk
+ --- ns1.hkdnr.net.hk
ns2.cuhk.edu.hk
+ 137.189.6.21 137.189.0.0/16 AS3661 barnowl.itsc.cuhk.edu.hk
+ --- barnowl.itsc.cuhk.edu.hk
ns2.hkirc.net.hk
+ 203.119.2.19 203.119.2.0/24 AS9735 ns2.hkdnr.net.hk
+ --- ns2.hkdnr.net.hk
ns3.cuhk.edu.hk
+ 202.45.188.39 202.45.176.0/20 AS4641 sheep.itsc.cuhk.edu.hk
+ --- sheep.itsc.cuhk.edu.hk
hk-ns.pch.net
+ 204.61.216.46 204.61.216.0/23 AS42 -
+ --- -
sec3.apnic.net
+ 202.12.28.140 202.12.28.0/24 AS4777 -
subdomains
mail.3domain.hk
mx1.3domain.hk
mx2.3domain.hk
ns1.3domain.hk
ns2.3domain.hk
ns3.3domain.hk
www.3domain.hk