42.252.164.0/23

Public

Class A — /23 prefix — 510 usable hosts

Network Address

42.252.164.0

Broadcast Address

42.252.165.255

Subnet Mask

255.255.254.0

Usable Hosts

510

First Usable IP

42.252.164.1

Last Usable IP

42.252.165.254

Total IPs

512

Prefix Length

/23

Network address — the base address of the block (42.252.164.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 42.252.165.255 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	42.252.164.0/23
Network Address	42.252.164.0
Broadcast Address	42.252.165.255
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	42.252.164.1
Last Usable IP	42.252.165.254
Network (Hex)	0x2AFCA400
Broadcast (Hex)	0x2AFCA5FF
Address Type	Public / Globally Routable

Binary Representation

Network Address

00101010.11111100 00101010.11111100.10100100.00000000

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 42.252.164.0/23 into 2 equal /24 subnets (254 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	42.252.164.0/24	42.252.164.0	42.252.164.1	42.252.164.254	42.252.164.255	254
2	42.252.165.0/24	42.252.165.0	42.252.165.1	42.252.165.254	42.252.165.255	254

Split 42.252.164.0/23 into 4 equal /25 subnets (126 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	42.252.164.0/25	42.252.164.0	42.252.164.1	42.252.164.126	42.252.164.127	126
2	42.252.164.128/25	42.252.164.128	42.252.164.129	42.252.164.254	42.252.164.255	126
3	42.252.165.0/25	42.252.165.0	42.252.165.1	42.252.165.126	42.252.165.127	126
4	42.252.165.128/25	42.252.165.128	42.252.165.129	42.252.165.254	42.252.165.255	126

Split 42.252.164.0/23 into 8 equal /26 subnets (62 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	42.252.164.0/26	42.252.164.0	42.252.164.1	42.252.164.62	42.252.164.63	62
2	42.252.164.64/26	42.252.164.64	42.252.164.65	42.252.164.126	42.252.164.127	62
3	42.252.164.128/26	42.252.164.128	42.252.164.129	42.252.164.190	42.252.164.191	62
4	42.252.164.192/26	42.252.164.192	42.252.164.193	42.252.164.254	42.252.164.255	62
5	42.252.165.0/26	42.252.165.0	42.252.165.1	42.252.165.62	42.252.165.63	62
6	42.252.165.64/26	42.252.165.64	42.252.165.65	42.252.165.126	42.252.165.127	62
7	42.252.165.128/26	42.252.165.128	42.252.165.129	42.252.165.190	42.252.165.191	62
8	42.252.165.192/26	42.252.165.192	42.252.165.193	42.252.165.254	42.252.165.255	62

Split 42.252.164.0/23 into 16 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	42.252.164.0/27	42.252.164.0	42.252.164.1	42.252.164.30	42.252.164.31	30
2	42.252.164.32/27	42.252.164.32	42.252.164.33	42.252.164.62	42.252.164.63	30
3	42.252.164.64/27	42.252.164.64	42.252.164.65	42.252.164.94	42.252.164.95	30
4	42.252.164.96/27	42.252.164.96	42.252.164.97	42.252.164.126	42.252.164.127	30
5	42.252.164.128/27	42.252.164.128	42.252.164.129	42.252.164.158	42.252.164.159	30
6	42.252.164.160/27	42.252.164.160	42.252.164.161	42.252.164.190	42.252.164.191	30
7	42.252.164.192/27	42.252.164.192	42.252.164.193	42.252.164.222	42.252.164.223	30
8	42.252.164.224/27	42.252.164.224	42.252.164.225	42.252.164.254	42.252.164.255	30
9	42.252.165.0/27	42.252.165.0	42.252.165.1	42.252.165.30	42.252.165.31	30
10	42.252.165.32/27	42.252.165.32	42.252.165.33	42.252.165.62	42.252.165.63	30
11	42.252.165.64/27	42.252.165.64	42.252.165.65	42.252.165.94	42.252.165.95	30
12	42.252.165.96/27	42.252.165.96	42.252.165.97	42.252.165.126	42.252.165.127	30
13	42.252.165.128/27	42.252.165.128	42.252.165.129	42.252.165.158	42.252.165.159	30
14	42.252.165.160/27	42.252.165.160	42.252.165.161	42.252.165.190	42.252.165.191	30
15	42.252.165.192/27	42.252.165.192	42.252.165.193	42.252.165.222	42.252.165.223	30
16	42.252.165.224/27	42.252.165.224	42.252.165.225	42.252.165.254	42.252.165.255	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 42.252.164.0/22 Sibling /23 block 42.252.166.0/23

Adjacent Prefix Sizes

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