171.238.91.0/26

Public

Class B — /26 prefix — 62 usable hosts

Network Address

171.238.91.0

Broadcast Address

171.238.91.63

Subnet Mask

255.255.255.192

Usable Hosts

First Usable IP

171.238.91.1

Last Usable IP

171.238.91.62

Total IPs

Prefix Length

/26

Network address — the base address of the block (171.238.91.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 171.238.91.63 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 62 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.255.192 is the dotted-decimal equivalent of /26. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation	171.238.91.0/26
Network Address	171.238.91.0
Broadcast Address	171.238.91.63
Subnet Mask	255.255.255.192
Wildcard Mask	0.0.0.63
Prefix Length	/26
IP Address Class	Class B
Total IP Addresses	64
Usable Host Addresses	62
First Usable IP	171.238.91.1
Last Usable IP	171.238.91.62
Network (Hex)	0xABEE5B00
Broadcast (Hex)	0xABEE5B3F
Address Type	Public / Globally Routable

Binary Representation

Network Address

10101011.11101110.01011011 10101011.11101110.01011011.00000000

Subnet Mask

11111111.11111111.11111111.11000000

The first 26 bits (1s in the mask) identify the network. The remaining 6 bits identify hosts within the network.

Split into Equal Subnets

Split 171.238.91.0/26 into 2 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	171.238.91.0/27	171.238.91.0	171.238.91.1	171.238.91.30	171.238.91.31	30
2	171.238.91.32/27	171.238.91.32	171.238.91.33	171.238.91.62	171.238.91.63	30

Split 171.238.91.0/26 into 4 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	171.238.91.0/28	171.238.91.0	171.238.91.1	171.238.91.14	171.238.91.15	14
2	171.238.91.16/28	171.238.91.16	171.238.91.17	171.238.91.30	171.238.91.31	14
3	171.238.91.32/28	171.238.91.32	171.238.91.33	171.238.91.46	171.238.91.47	14
4	171.238.91.48/28	171.238.91.48	171.238.91.49	171.238.91.62	171.238.91.63	14

Split 171.238.91.0/26 into 8 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	171.238.91.0/29	171.238.91.0	171.238.91.1	171.238.91.6	171.238.91.7	6
2	171.238.91.8/29	171.238.91.8	171.238.91.9	171.238.91.14	171.238.91.15	6
3	171.238.91.16/29	171.238.91.16	171.238.91.17	171.238.91.22	171.238.91.23	6
4	171.238.91.24/29	171.238.91.24	171.238.91.25	171.238.91.30	171.238.91.31	6
5	171.238.91.32/29	171.238.91.32	171.238.91.33	171.238.91.38	171.238.91.39	6
6	171.238.91.40/29	171.238.91.40	171.238.91.41	171.238.91.46	171.238.91.47	6
7	171.238.91.48/29	171.238.91.48	171.238.91.49	171.238.91.54	171.238.91.55	6
8	171.238.91.56/29	171.238.91.56	171.238.91.57	171.238.91.62	171.238.91.63	6

Split 171.238.91.0/26 into 16 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	171.238.91.0/30	171.238.91.0	171.238.91.1	171.238.91.2	171.238.91.3	2
2	171.238.91.4/30	171.238.91.4	171.238.91.5	171.238.91.6	171.238.91.7	2
3	171.238.91.8/30	171.238.91.8	171.238.91.9	171.238.91.10	171.238.91.11	2
4	171.238.91.12/30	171.238.91.12	171.238.91.13	171.238.91.14	171.238.91.15	2
5	171.238.91.16/30	171.238.91.16	171.238.91.17	171.238.91.18	171.238.91.19	2
6	171.238.91.20/30	171.238.91.20	171.238.91.21	171.238.91.22	171.238.91.23	2
7	171.238.91.24/30	171.238.91.24	171.238.91.25	171.238.91.26	171.238.91.27	2
8	171.238.91.28/30	171.238.91.28	171.238.91.29	171.238.91.30	171.238.91.31	2
9	171.238.91.32/30	171.238.91.32	171.238.91.33	171.238.91.34	171.238.91.35	2
10	171.238.91.36/30	171.238.91.36	171.238.91.37	171.238.91.38	171.238.91.39	2
11	171.238.91.40/30	171.238.91.40	171.238.91.41	171.238.91.42	171.238.91.43	2
12	171.238.91.44/30	171.238.91.44	171.238.91.45	171.238.91.46	171.238.91.47	2
13	171.238.91.48/30	171.238.91.48	171.238.91.49	171.238.91.50	171.238.91.51	2
14	171.238.91.52/30	171.238.91.52	171.238.91.53	171.238.91.54	171.238.91.55	2
15	171.238.91.56/30	171.238.91.56	171.238.91.57	171.238.91.58	171.238.91.59	2
16	171.238.91.60/30	171.238.91.60	171.238.91.61	171.238.91.62	171.238.91.63	2

IP Address Sample

Showing first 16 of 64 total IPs.

171.238.91.0 net

171.238.91.1

171.238.91.2

171.238.91.3

171.238.91.4

171.238.91.5

171.238.91.6

171.238.91.7

171.238.91.8

171.238.91.9

171.238.91.10

171.238.91.11

171.238.91.12

171.238.91.13

171.238.91.14

171.238.91.15

… 48 more IPs …

/26 Subnet Reference

Total IPs 64

Usable Hosts 62

Subnet Mask 255.255.255.192

Wildcard 0.0.0.63

Full /26 reference →

Related Ranges

Parent /25 block 171.238.91.0/25 Sibling /26 block 171.238.91.64/26

Adjacent Prefix Sizes

/24 254 hosts /25 126 hosts /26 62 hosts /27 30 hosts /28 14 hosts