Create validator.py

validator.py

@@ -0,0 +1,24 @@
+import os
+import socket
+
+# specify the domain
+domain = "domain.com"
+
+# specify the output file path
+output_file = "output.txt"
+
+# loop through 100 numbers and generate the output
+with open(output_file, "w") as f:
+    for i in range(1, 101):
+        # format the number with leading zeros
+        num = "{:03d}".format(i)
+        # generate the subdomain
+        subdomain = f"us-{num}.{domain}"
+        # run nslookup on the subdomain
+        try:
+            socket.gethostbyname(subdomain)
+            # write the subdomain to the output file if it resolves to an IP address
+            f.write(subdomain + os.linesep)
+        except socket.error:
+            # do nothing if the subdomain does not resolve to an IP address
+            pass