I am also in Zhuhai ~ ~ ~ The question you asked here is probably fruitless, because no one in Gongbei will be familiar with all the residential routes! Just know a few neighborhoods at most. So you can write down the names of some communities, and then call the telecom customer service to ask. At present, all residential areas in Zhuhai basically need optical fiber access. At least, in the past five years, all residential areas have been connected to their homes through optical fibers, and even if they have not been connected to their homes for more than five years, they have reached residential areas.
It is most reliable to call 10000. Even if you ask some people if there is fttp in their community, many people don't know.