151.3.34.128/26

Public

Class B — /26 prefix — 62 usable hosts

Network Address

151.3.34.128

Broadcast Address

151.3.34.191

Subnet Mask

255.255.255.192

Usable Hosts

First Usable IP

151.3.34.129

Last Usable IP

151.3.34.190

Total IPs

Prefix Length

/26

Network address — the base address of the block (151.3.34.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 151.3.34.191 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	151.3.34.128/26
Network Address	151.3.34.128
Broadcast Address	151.3.34.191
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	151.3.34.129
Last Usable IP	151.3.34.190
Network (Hex)	0x97032280
Broadcast (Hex)	0x970322BF
Address Type	Public / Globally Routable

Binary Representation

Network Address

10010111.00000011.00100010 10010111.00000011.00100010.10000000

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 151.3.34.128/26 into 2 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	151.3.34.128/27	151.3.34.128	151.3.34.129	151.3.34.158	151.3.34.159	30
2	151.3.34.160/27	151.3.34.160	151.3.34.161	151.3.34.190	151.3.34.191	30

Split 151.3.34.128/26 into 4 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	151.3.34.128/28	151.3.34.128	151.3.34.129	151.3.34.142	151.3.34.143	14
2	151.3.34.144/28	151.3.34.144	151.3.34.145	151.3.34.158	151.3.34.159	14
3	151.3.34.160/28	151.3.34.160	151.3.34.161	151.3.34.174	151.3.34.175	14
4	151.3.34.176/28	151.3.34.176	151.3.34.177	151.3.34.190	151.3.34.191	14

Split 151.3.34.128/26 into 8 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	151.3.34.128/29	151.3.34.128	151.3.34.129	151.3.34.134	151.3.34.135	6
2	151.3.34.136/29	151.3.34.136	151.3.34.137	151.3.34.142	151.3.34.143	6
3	151.3.34.144/29	151.3.34.144	151.3.34.145	151.3.34.150	151.3.34.151	6
4	151.3.34.152/29	151.3.34.152	151.3.34.153	151.3.34.158	151.3.34.159	6
5	151.3.34.160/29	151.3.34.160	151.3.34.161	151.3.34.166	151.3.34.167	6
6	151.3.34.168/29	151.3.34.168	151.3.34.169	151.3.34.174	151.3.34.175	6
7	151.3.34.176/29	151.3.34.176	151.3.34.177	151.3.34.182	151.3.34.183	6
8	151.3.34.184/29	151.3.34.184	151.3.34.185	151.3.34.190	151.3.34.191	6

Split 151.3.34.128/26 into 16 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	151.3.34.128/30	151.3.34.128	151.3.34.129	151.3.34.130	151.3.34.131	2
2	151.3.34.132/30	151.3.34.132	151.3.34.133	151.3.34.134	151.3.34.135	2
3	151.3.34.136/30	151.3.34.136	151.3.34.137	151.3.34.138	151.3.34.139	2
4	151.3.34.140/30	151.3.34.140	151.3.34.141	151.3.34.142	151.3.34.143	2
5	151.3.34.144/30	151.3.34.144	151.3.34.145	151.3.34.146	151.3.34.147	2
6	151.3.34.148/30	151.3.34.148	151.3.34.149	151.3.34.150	151.3.34.151	2
7	151.3.34.152/30	151.3.34.152	151.3.34.153	151.3.34.154	151.3.34.155	2
8	151.3.34.156/30	151.3.34.156	151.3.34.157	151.3.34.158	151.3.34.159	2
9	151.3.34.160/30	151.3.34.160	151.3.34.161	151.3.34.162	151.3.34.163	2
10	151.3.34.164/30	151.3.34.164	151.3.34.165	151.3.34.166	151.3.34.167	2
11	151.3.34.168/30	151.3.34.168	151.3.34.169	151.3.34.170	151.3.34.171	2
12	151.3.34.172/30	151.3.34.172	151.3.34.173	151.3.34.174	151.3.34.175	2
13	151.3.34.176/30	151.3.34.176	151.3.34.177	151.3.34.178	151.3.34.179	2
14	151.3.34.180/30	151.3.34.180	151.3.34.181	151.3.34.182	151.3.34.183	2
15	151.3.34.184/30	151.3.34.184	151.3.34.185	151.3.34.186	151.3.34.187	2
16	151.3.34.188/30	151.3.34.188	151.3.34.189	151.3.34.190	151.3.34.191	2

IP Address Sample

Showing first 16 of 64 total IPs.

151.3.34.128 net

151.3.34.129

151.3.34.130

151.3.34.131

151.3.34.132

151.3.34.133

151.3.34.134

151.3.34.135

151.3.34.136

151.3.34.137

151.3.34.138

151.3.34.139

151.3.34.140

151.3.34.141

151.3.34.142

151.3.34.143

… 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 151.3.34.128/25 Sibling /26 block 151.3.34.192/26

Adjacent Prefix Sizes

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