fax to 888 fax number

I am located in hong kong
I need to fax a couple of documents to a fax number

the fax number start with 888
I dont know what country this fax number belongs
pls give me information about 888 fax numbers

Any internet fax provider provide this service for free, or have a free trial?

If I visit a shop in real life for the fax, would the shop likely charge me international fax fee?