.NS5 File Extension Information

What program uses .NS5 file extension?

Program : Notes/Domino
Program Website: Notes/Domino
Company : IBM
Company Website: IBM

Extensions starting with

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | #-0-9