It depends on the tool.
For most purposes the two will be the same, but not always.
For example, if you use a 3-digit number starting with a zero (or a two-digit one starting with zero, thanks @Dietrich-Epp), then ping will assume the numbers arenumber is octal.
Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.
C:\Users>ping 011.012.013.014
Pinging 9.10.11.12 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 9.10.11.12:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),