well known ports http://www.iana.org/assignments/port-numbers Pages in category "Ports" The following 25 pages are in this category, out of 25 total. 1 110 143 172 20 21 22 23 253 3000 33064 4133 425 5223 536 67 68 698 809 993 995P Port Private portR Registered portU Unregistered portW Well known port Category: Networking Cookies help us deliver our services. By using our services, you agree to our use of cookies.More informationOK