diff --git a/main.py b/main.py
index 71a3166..af87113 100644
--- a/main.py
+++ b/main.py
@@ -1,6 +1,61 @@
+import re
+
+
 def solution():
-    pass
+    ip = input("Enter your IP Address in the form (x.x.x.x/x):")
+
+    check_ip = bool(re.match(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/\d{1,2}$", ip))
+
+    if check_ip is False:
+        print("Invalid IP Address has been entered")
+    else:
+        x = ip
+        octets = []
+        for i in range(0, 3):
+            x = x.partition("."[0])
+            octets.append(int(x[0]))
+            x = x[2]
+        x = x.partition("/"[0])
+        octets.append(int(x[0]))
+        octets.append(int(x[2]))
+
+        first_octet = octets[0]
+        second_octet = octets[1]
+        fourth_octet = octets[3]
+
+        # Class A
+        if 0 <= first_octet <= 127:
+            if first_octet == 10:
+                print("Output: Class: A, Designation: Private")
+            elif first_octet == 127 and 1 <= fourth_octet <= 255:
+                print("Output: Class: A, Designation: Special")
+            else:
+                print("Output: Class: A, Designation: Public")
+
+        # Class B
+        if 128 <= first_octet <= 191:
+            if (first_octet == 171) and (16 <= second_octet <= 31):
+                print("Output: Class: B, Designation: Private")
+            elif (first_octet == 169) and (second_octet == 254):
+                print("Output: Class: B, Designation: Automatic Private IP Addressing (APIPA)")
+            else:
+                print("Output: Class: B, Designation: Public")
+
+        # Class C
+        if 192 <= first_octet <= 223:
+            if (first_octet == 192) and (second_octet == 168):
+                print("Output: Class: C, Designation: Private")
+            else:
+                print("Output: Class: C, Designation: Public")
+
+        # Class D
+        if 224 <= first_octet <= 239:
+            print("Output: Class: D")
+
+        # Class E
+        if 240 <= first_octet <= 255:
+            print("Output: Class: E")
 
 
 if __name__ == '__main__':
-    pass
+    solution()