These websites are mainly unlicensed gambling, pimping (known as vice related activities), copyright infringement/piracy, and for spreading falsehoods.
[1] Websites that are blocked in Singapore are easily circumvented by a DNS change without the need to use a VPN.
[2] As of 2019, there were 202 vice-related websites blocked by Singaporean authorities.
[3] On 1 March 2022, the Asia Video Industry Association's Coalition Against Piracy (CAP) announced that it had obtained a court order from the Singapore High Court for the blocking of 30 illegal streaming sites and nearly 150 domain names associated with those sites.
[20] On 28 September 2022, CAP stated that it had obtained a further court order for the blocking of a total of 245 domain names which provided access to 30 illegal streaming sites.