18.162.128.0/24

Public

Class A — /24 prefix — 254 usable hosts

Network Address

18.162.128.0

Broadcast Address

18.162.128.255

Subnet Mask

255.255.255.0

Usable Hosts

254

First Usable IP

18.162.128.1

Last Usable IP

18.162.128.254

Total IPs

256

Prefix Length

/24

Network address — the base address of the block (18.162.128.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 18.162.128.255 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 254 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.255.0 is the dotted-decimal equivalent of /24. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation	18.162.128.0/24
Network Address	18.162.128.0
Broadcast Address	18.162.128.255
Subnet Mask	255.255.255.0
Wildcard Mask	0.0.0.255
Prefix Length	/24
IP Address Class	Class A
Total IP Addresses	256
Usable Host Addresses	254
First Usable IP	18.162.128.1
Last Usable IP	18.162.128.254
Network (Hex)	0x12A28000
Broadcast (Hex)	0x12A280FF
Address Type	Public / Globally Routable

Binary Representation

Network Address

00010010.10100010.10000000 00010010.10100010.10000000.00000000

Subnet Mask

11111111.11111111.11111111.00000000

The first 24 bits (1s in the mask) identify the network. The remaining 8 bits identify hosts within the network.

Split into Equal Subnets

Split 18.162.128.0/24 into 2 equal /25 subnets (126 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	18.162.128.0/25	18.162.128.0	18.162.128.1	18.162.128.126	18.162.128.127	126
2	18.162.128.128/25	18.162.128.128	18.162.128.129	18.162.128.254	18.162.128.255	126

Split 18.162.128.0/24 into 4 equal /26 subnets (62 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	18.162.128.0/26	18.162.128.0	18.162.128.1	18.162.128.62	18.162.128.63	62
2	18.162.128.64/26	18.162.128.64	18.162.128.65	18.162.128.126	18.162.128.127	62
3	18.162.128.128/26	18.162.128.128	18.162.128.129	18.162.128.190	18.162.128.191	62
4	18.162.128.192/26	18.162.128.192	18.162.128.193	18.162.128.254	18.162.128.255	62

Split 18.162.128.0/24 into 8 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	18.162.128.0/27	18.162.128.0	18.162.128.1	18.162.128.30	18.162.128.31	30
2	18.162.128.32/27	18.162.128.32	18.162.128.33	18.162.128.62	18.162.128.63	30
3	18.162.128.64/27	18.162.128.64	18.162.128.65	18.162.128.94	18.162.128.95	30
4	18.162.128.96/27	18.162.128.96	18.162.128.97	18.162.128.126	18.162.128.127	30
5	18.162.128.128/27	18.162.128.128	18.162.128.129	18.162.128.158	18.162.128.159	30
6	18.162.128.160/27	18.162.128.160	18.162.128.161	18.162.128.190	18.162.128.191	30
7	18.162.128.192/27	18.162.128.192	18.162.128.193	18.162.128.222	18.162.128.223	30
8	18.162.128.224/27	18.162.128.224	18.162.128.225	18.162.128.254	18.162.128.255	30

Split 18.162.128.0/24 into 16 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	18.162.128.0/28	18.162.128.0	18.162.128.1	18.162.128.14	18.162.128.15	14
2	18.162.128.16/28	18.162.128.16	18.162.128.17	18.162.128.30	18.162.128.31	14
3	18.162.128.32/28	18.162.128.32	18.162.128.33	18.162.128.46	18.162.128.47	14
4	18.162.128.48/28	18.162.128.48	18.162.128.49	18.162.128.62	18.162.128.63	14
5	18.162.128.64/28	18.162.128.64	18.162.128.65	18.162.128.78	18.162.128.79	14
6	18.162.128.80/28	18.162.128.80	18.162.128.81	18.162.128.94	18.162.128.95	14
7	18.162.128.96/28	18.162.128.96	18.162.128.97	18.162.128.110	18.162.128.111	14
8	18.162.128.112/28	18.162.128.112	18.162.128.113	18.162.128.126	18.162.128.127	14
9	18.162.128.128/28	18.162.128.128	18.162.128.129	18.162.128.142	18.162.128.143	14
10	18.162.128.144/28	18.162.128.144	18.162.128.145	18.162.128.158	18.162.128.159	14
11	18.162.128.160/28	18.162.128.160	18.162.128.161	18.162.128.174	18.162.128.175	14
12	18.162.128.176/28	18.162.128.176	18.162.128.177	18.162.128.190	18.162.128.191	14
13	18.162.128.192/28	18.162.128.192	18.162.128.193	18.162.128.206	18.162.128.207	14
14	18.162.128.208/28	18.162.128.208	18.162.128.209	18.162.128.222	18.162.128.223	14
15	18.162.128.224/28	18.162.128.224	18.162.128.225	18.162.128.238	18.162.128.239	14
16	18.162.128.240/28	18.162.128.240	18.162.128.241	18.162.128.254	18.162.128.255	14

IP Address Sample

Showing first 16 of 256 total IPs.

18.162.128.0 net

18.162.128.1

18.162.128.2

18.162.128.3

18.162.128.4

18.162.128.5

18.162.128.6

18.162.128.7

18.162.128.8

18.162.128.9

18.162.128.10

18.162.128.11

18.162.128.12

18.162.128.13

18.162.128.14

18.162.128.15

… 240 more IPs …

/24 Subnet Reference

Total IPs 256

Usable Hosts 254

Subnet Mask 255.255.255.0

Wildcard 0.0.0.255

Full /24 reference →

Related Ranges

Parent /23 block 18.162.128.0/23 Sibling /24 block 18.162.129.0/24

Adjacent Prefix Sizes

/22 1,022 hosts /23 510 hosts /24 254 hosts /25 126 hosts /26 62 hosts