Recognised as IPv4 subnet
127.102.228.128/28
- IPv4
- Loopback
- /28
- 14 hosts
127.102.228.128/28 is an IPv4 subnet of 16 addresses, of which 14 are usable hosts. Its network address is 127.102.228.128, its broadcast address is 127.102.228.143, and its subnet mask is 255.255.255.240. The block is loopback: RFC 1122, never leaves the host.
Address
01111111011001101110010010000000
Dotted decimal127.102.228.128
32-bit integer2,137,449,600
Hexadecimal0x7F66E480
Binary01111111.01100110.11100100.10000000
Octal0177.0146.0344.0200
Octets1: 127 · 2: 102 · 3: 228 · 4: 128
Reverse DNS name128.228.102.127.in-addr.arpa
IPv4-mapped IPv6::ffff:127.102.228.128
IPv6 compact form::ffff:7f66:e480
Subnet 127.102.228.128/28
Network address127.102.228.128
Broadcast address127.102.228.143
Subnet mask255.255.255.240
Wildcard mask0.0.0.15the inverse mask, as used in ACLs
Prefix length/28
Total addresses16
Usable hosts14the network and broadcast addresses are not assignable
First usable host127.102.228.129
Last usable host127.102.228.142
Host range127.102.228.129 – 127.102.228.142
Mask in binary11111111.11111111.11111111.11110000
Contains this addressYes
Scope & registry
TypeLoopbackRFC 1122, never leaves the host
Routable on the public internetNo
Legacy classA (/8 by the old classful scheme)classful addressing was replaced by CIDR in 1993; shown for reference only
LoopbackYes
MulticastNo
Safe to use in documentationNo
Related prefixes
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