Network: 12.128.56.0/30
Addresses: 4 (2²)
First IP: 12.128.56.0 (0.56.128.12.in-addr.arpa)
Last IP: 12.128.56.3 (3.56.128.12.in-addr.arpa)

/8 Operated By: AT&T Bell Laboratories

• 12.0.0.0/8
• 11.0.0.0/8
• 13.0.0.0/8
• 12.128.56.0/29
• 12.128.56.0/32
• 12.128.56.3/32

• 0.0.0.0/0
• 1.0.0.0/8
• 127.0.0.1
• 30.0.0.0/8
• 192.168.0.0/16