Summary
ns5.imsbiz.com has one IP number , which also has a corresponding reverse pointer.
opg.hk,
hkt.com,
sehk.com,
hkep.com,
suep.com and at least 100 other hosts use this as a nameserver.
imsbiz.com is a domain controlled by two nameservers at
imsbiz.com themselves. They are on different IP networks. Incoming mail for
imsbiz.com is handled by one mailserver having a total of two IP numbers. They are on the same IP network.
ns5.imsbiz.com is hosted on a server in Hong Kong.