Singapore or other Asia SMS online service for 2FA

I've been looking for a service that provides long-term rental of virtual Singapore SMS number which is accessible online for receipt of 2FA messages. Something like the long-term rental service of Mobile Phone Numbers To Receive SMS Online | MobileSMS.io except for Singapore.

Alternatively a similar service for other countries in Asia would be of interest.

Can anyone recommend something? Most of the services I have seen have just been for US or European countries but I don't want that. Other services just offer 1-time or 30 days receipt of SMS but I need it long-term (1 year plus ideally).