10.11.12.13 is in the 10.0.0.0/8 block which is used in private networks. Addresses within this block
do not legitimately appear on the public Internet.
Addresses within 10.0.0.0/8 can be used without any coordination with IANA or an Internet registry.
[
RFC1918 - Address Allocation for Private internets ]
Integer: 168496141