Please whitelist the following IP numbers based on your location:

Centennial Tower
66.96.204.99 (MyRepublic -  1Gbps)
158.140.142.137 - 158.140.142.142 ( MyRepublic - 6 IP - available for dedicated use by tenant - please send request to it@thegreatroom.co)
203.118.10.85 (Starhub - dynamic, may change each time PPPoE  - 500Mbps)
203.125.38.242 (SingNet - 200Mbps)
115.42.153.193 - 115.42.153.206 (SingNet - 14 IP -a vailable for dedicated use by tenant - please send request to centennialtower@thegreatroom.co)

Ngee Ann City

223.25.64.40 (DHCP, but stays constant usually for 3 months)
121.6.215.111 (DHCP but stays constant usually for 3 months)

One George Street
66.96.213.70 (My Republic - Main gateway)
66.96.213.66-71  MyRepublic - 6 IP - available for dedicated use by tenant - please send request to it@thegreatroom.co)
122.11.177.74 (Starhub - dynamic, may change each time PPPoE - 500Mbps
42.61.14.66 (SingNet - 200Mbps)
202.73.43.74 (Viewqwest - 1Gbps)
119.73.190.209 - 119.73.190.222 (SingNet - 14 IP - available for dedicated use by tenant - please send request to onegeorge@thegreatroom.co)

Raffles Hotel

One Taikoo Place

Gaysorn Tower

110.49.37.66 - 110.49.37.78
203.172.47.178 - 203.172.47.190 (some IP available, please send request to gaysorn@thegreatroom.co)