Looking up hkcex.net on domainwhitepages.com we get the following traceroute which might be helpful to those who understand it. I don't

Traceroute

Tracing route to hkcex.net [124.248.221.134]...
hop    rtt    rtt    rtt         ip address    fully qualified domain name
1    0    0    0         208.101.16.73    208.101.16.73-static.reverse.softlayer.com
2    0    0    0         66.228.118.157    ae11.dar02.sr01.dal01.networklayer.com
3    0    0    0         173.192.18.252    ae14.bbr01.eq01.dal03.networklayer.com
4    34    34    34         173.192.18.141    ae0.bbr01.cs01.lax01.networklayer.com
5    30    30    30         173.192.18.167    ae7.bbr02.cs01.lax01.networklayer.com
6    41    41    41         173.192.18.150    ae0.bbr02.eq01.sjc02.networklayer.com
7    132    132    132         50.97.18.161    ae0.bbr01.eq01.tok01.networklayer.com
8    140    140    140         50.97.18.163    ae7.bbr02.eq01.tok01.networklayer.com
9    183    183    183         50.97.18.167    ae0.bbr01.pn01.hkg01.networklayer.com
10    176    176    176         202.40.160.139    sunnyvision3-10g.hkix.net
11    184    184    184         123.242.225.10    te3-3.core3.hk01.hkngn.com
12    *    *    *            
13    *    *    *            
14    *    *    *            
15    *    *    *            

Trace aborted



The bold IP is referring to another domain HKIX.NET


Queried whois.internic.net with "dom hkix.net"...

   Domain Name: HKIX.NET
   Registrar: DOMAIN.COM, LLC
   Whois Server: whois.domain.com
   Referral URL: http://www.domain.com
   Name Server: NS1.CUHK.EDU.HK
   Name Server: NS2.CUHK.EDU.HK
   Name Server: NS3.CUHK.EDU.HK
   Status: ok
   Updated Date: 12-mar-2012
   Creation Date: 23-apr-1995
   Expiration Date: 24-apr-2021

>>> Last update of whois database: Sun, 01 Jun 2014 01:21:32 UTC <<<

Queried whois.domain.com with "hkix.net"...

Domain Name: HKIX.NET
Registry Domain ID:
Registrar WHOIS Server: whois.domain.com
Registrar URL: www.domain.com
Updated Date: 2012-06-26 23:41:31
Creation Date: 1995-04-23 04:00:00
Registrar Registration Expiration Date: 2021-04-24 04:00:00
Registrar: Domain.com, LLC
Registrar IANA ID: 886
Registrar Abuse Contact Email: compliance@domain-inc.net
Registrar Abuse Contact Phone: +1.6027165396
Reseller: MyDomain
Reseller: support@mydomain-inc.com
Reseller: +1.8004057875
Domain Status: ok
Registry Registrant ID:
Registrant Name: Network Administrative Contact
Registrant Organization: The Chinese University of Hong Kong
Registrant Street: Information Technology Services Centre G/F, Pi Chiu Building, CUHK
Registrant City: Shatin
Registrant State/Province: New Territories
Registrant Postal Code: 00000
Registrant Country: HK
Registrant Phone: +852.39438801
Registrant Phone Ext:
Registrant Fax: +852.26035001
Registrant Fax Ext:
Registrant Email: noc-admin@cuhk.edu.hk


And the bold italic IP belongs to the domain HKNGN.COM


Queried whois.internic.net with "dom hkngn.com"...

   Domain Name: HKNGN.COM
   Registrar: ENOM, INC.
   Whois Server: whois.enom.com
   Referral URL: http://www.enom.com
   Name Server: NS1.HKSEEKER.COM
   Name Server: NS2.HKSEEKER.COM
   Status: ok
   Updated Date: 20-may-2014
   Creation Date: 17-jun-2013
   Expiration Date: 17-jun-2015

>>> Last update of whois database: Sun, 01 Jun 2014 01:27:49 UTC <<<

Queried whois.enom.com with "hkngn.com"...

Domain Name: HKNGN.COM
Registry Domain ID: 1809120000_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.enom.com
Registrar URL: www.enom.com
Updated Date: 2014-05-20 02:37:53Z
Creation Date: 2013-06-18 01:26:15Z
Registrar Registration Expiration Date: 2015-06-18 01:26:00Z
Registrar: ENOM, INC.
Registrar IANA ID: 48
Registrar Abuse Contact Email: abuse@enom.com
Registrar Abuse Contact Phone: +1.4252744500
Domain Status: ok
Registry Registrant ID:
Registrant Name: DOMAIN ADMINISTRATOR
Registrant Organization: JIAPEI GROUP LIMITED
Registrant Street: ROOM 604, WELLTECH CENTRE, PAT TAT STREET, SAN PO KONG,
Registrant Street: KOWLOON, HONG KONG
Registrant City: HONG KONG


As admitted, I don't know much about that stuff. Maybe you can find a hint...