51.152.150.0/23

Public

Class A — /23 prefix — 510 usable hosts

Network Address

51.152.150.0

Broadcast Address

51.152.151.255

Subnet Mask

255.255.254.0

Usable Hosts

510

First Usable IP

51.152.150.1

Last Usable IP

51.152.151.254

Total IPs

512

Prefix Length

/23

Network address — the base address of the block (51.152.150.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 51.152.151.255 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 510 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.254.0 is the dotted-decimal equivalent of /23. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation	51.152.150.0/23
Network Address	51.152.150.0
Broadcast Address	51.152.151.255
Subnet Mask	255.255.254.0
Wildcard Mask	0.0.1.255
Prefix Length	/23
IP Address Class	Class A
Total IP Addresses	512
Usable Host Addresses	510
First Usable IP	51.152.150.1
Last Usable IP	51.152.151.254
Network (Hex)	0x33989600
Broadcast (Hex)	0x339897FF
Address Type	Public / Globally Routable

Binary Representation

Network Address

00110011.10011000 00110011.10011000.10010110.00000000

Subnet Mask

11111111.11111111.11111110.00000000

The first 23 bits (1s in the mask) identify the network. The remaining 9 bits identify hosts within the network.

Split into Equal Subnets

Split 51.152.150.0/23 into 2 equal /24 subnets (254 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	51.152.150.0/24	51.152.150.0	51.152.150.1	51.152.150.254	51.152.150.255	254
2	51.152.151.0/24	51.152.151.0	51.152.151.1	51.152.151.254	51.152.151.255	254

Split 51.152.150.0/23 into 4 equal /25 subnets (126 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	51.152.150.0/25	51.152.150.0	51.152.150.1	51.152.150.126	51.152.150.127	126
2	51.152.150.128/25	51.152.150.128	51.152.150.129	51.152.150.254	51.152.150.255	126
3	51.152.151.0/25	51.152.151.0	51.152.151.1	51.152.151.126	51.152.151.127	126
4	51.152.151.128/25	51.152.151.128	51.152.151.129	51.152.151.254	51.152.151.255	126

Split 51.152.150.0/23 into 8 equal /26 subnets (62 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	51.152.150.0/26	51.152.150.0	51.152.150.1	51.152.150.62	51.152.150.63	62
2	51.152.150.64/26	51.152.150.64	51.152.150.65	51.152.150.126	51.152.150.127	62
3	51.152.150.128/26	51.152.150.128	51.152.150.129	51.152.150.190	51.152.150.191	62
4	51.152.150.192/26	51.152.150.192	51.152.150.193	51.152.150.254	51.152.150.255	62
5	51.152.151.0/26	51.152.151.0	51.152.151.1	51.152.151.62	51.152.151.63	62
6	51.152.151.64/26	51.152.151.64	51.152.151.65	51.152.151.126	51.152.151.127	62
7	51.152.151.128/26	51.152.151.128	51.152.151.129	51.152.151.190	51.152.151.191	62
8	51.152.151.192/26	51.152.151.192	51.152.151.193	51.152.151.254	51.152.151.255	62

Split 51.152.150.0/23 into 16 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	51.152.150.0/27	51.152.150.0	51.152.150.1	51.152.150.30	51.152.150.31	30
2	51.152.150.32/27	51.152.150.32	51.152.150.33	51.152.150.62	51.152.150.63	30
3	51.152.150.64/27	51.152.150.64	51.152.150.65	51.152.150.94	51.152.150.95	30
4	51.152.150.96/27	51.152.150.96	51.152.150.97	51.152.150.126	51.152.150.127	30
5	51.152.150.128/27	51.152.150.128	51.152.150.129	51.152.150.158	51.152.150.159	30
6	51.152.150.160/27	51.152.150.160	51.152.150.161	51.152.150.190	51.152.150.191	30
7	51.152.150.192/27	51.152.150.192	51.152.150.193	51.152.150.222	51.152.150.223	30
8	51.152.150.224/27	51.152.150.224	51.152.150.225	51.152.150.254	51.152.150.255	30
9	51.152.151.0/27	51.152.151.0	51.152.151.1	51.152.151.30	51.152.151.31	30
10	51.152.151.32/27	51.152.151.32	51.152.151.33	51.152.151.62	51.152.151.63	30
11	51.152.151.64/27	51.152.151.64	51.152.151.65	51.152.151.94	51.152.151.95	30
12	51.152.151.96/27	51.152.151.96	51.152.151.97	51.152.151.126	51.152.151.127	30
13	51.152.151.128/27	51.152.151.128	51.152.151.129	51.152.151.158	51.152.151.159	30
14	51.152.151.160/27	51.152.151.160	51.152.151.161	51.152.151.190	51.152.151.191	30
15	51.152.151.192/27	51.152.151.192	51.152.151.193	51.152.151.222	51.152.151.223	30
16	51.152.151.224/27	51.152.151.224	51.152.151.225	51.152.151.254	51.152.151.255	30

/23 Subnet Reference

Total IPs 512

Usable Hosts 510

Subnet Mask 255.255.254.0

Wildcard 0.0.1.255

Full /23 reference →

Related Ranges

Parent /22 block 51.152.148.0/22 Sibling /23 block 51.152.148.0/23

Adjacent Prefix Sizes

/21 2,046 hosts /22 1,022 hosts /23 510 hosts /24 254 hosts /25 126 hosts