0.2.90.128/26

Public

Class A — /26 prefix — 62 usable hosts

Network Address

0.2.90.128

Broadcast Address

0.2.90.191

Subnet Mask

255.255.255.192

Usable Hosts

First Usable IP

0.2.90.129

Last Usable IP

0.2.90.190

Total IPs

Prefix Length

/26

Network address — the base address of the block (0.2.90.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 0.2.90.191 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	0.2.90.128/26
Network Address	0.2.90.128
Broadcast Address	0.2.90.191
Subnet Mask	255.255.255.192
Wildcard Mask	0.0.0.63
Prefix Length	/26
IP Address Class	Class A
Total IP Addresses	64
Usable Host Addresses	62
First Usable IP	0.2.90.129
Last Usable IP	0.2.90.190
Network (Hex)	0x00025A80
Broadcast (Hex)	0x00025ABF
Address Type	Public / Globally Routable

Binary Representation

Network Address

00000000.00000010.01011010 00000000.00000010.01011010.10000000

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 0.2.90.128/26 into 2 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	0.2.90.128/27	0.2.90.128	0.2.90.129	0.2.90.158	0.2.90.159	30
2	0.2.90.160/27	0.2.90.160	0.2.90.161	0.2.90.190	0.2.90.191	30

Split 0.2.90.128/26 into 4 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	0.2.90.128/28	0.2.90.128	0.2.90.129	0.2.90.142	0.2.90.143	14
2	0.2.90.144/28	0.2.90.144	0.2.90.145	0.2.90.158	0.2.90.159	14
3	0.2.90.160/28	0.2.90.160	0.2.90.161	0.2.90.174	0.2.90.175	14
4	0.2.90.176/28	0.2.90.176	0.2.90.177	0.2.90.190	0.2.90.191	14

Split 0.2.90.128/26 into 8 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	0.2.90.128/29	0.2.90.128	0.2.90.129	0.2.90.134	0.2.90.135	6
2	0.2.90.136/29	0.2.90.136	0.2.90.137	0.2.90.142	0.2.90.143	6
3	0.2.90.144/29	0.2.90.144	0.2.90.145	0.2.90.150	0.2.90.151	6
4	0.2.90.152/29	0.2.90.152	0.2.90.153	0.2.90.158	0.2.90.159	6
5	0.2.90.160/29	0.2.90.160	0.2.90.161	0.2.90.166	0.2.90.167	6
6	0.2.90.168/29	0.2.90.168	0.2.90.169	0.2.90.174	0.2.90.175	6
7	0.2.90.176/29	0.2.90.176	0.2.90.177	0.2.90.182	0.2.90.183	6
8	0.2.90.184/29	0.2.90.184	0.2.90.185	0.2.90.190	0.2.90.191	6

Split 0.2.90.128/26 into 16 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	0.2.90.128/30	0.2.90.128	0.2.90.129	0.2.90.130	0.2.90.131	2
2	0.2.90.132/30	0.2.90.132	0.2.90.133	0.2.90.134	0.2.90.135	2
3	0.2.90.136/30	0.2.90.136	0.2.90.137	0.2.90.138	0.2.90.139	2
4	0.2.90.140/30	0.2.90.140	0.2.90.141	0.2.90.142	0.2.90.143	2
5	0.2.90.144/30	0.2.90.144	0.2.90.145	0.2.90.146	0.2.90.147	2
6	0.2.90.148/30	0.2.90.148	0.2.90.149	0.2.90.150	0.2.90.151	2
7	0.2.90.152/30	0.2.90.152	0.2.90.153	0.2.90.154	0.2.90.155	2
8	0.2.90.156/30	0.2.90.156	0.2.90.157	0.2.90.158	0.2.90.159	2
9	0.2.90.160/30	0.2.90.160	0.2.90.161	0.2.90.162	0.2.90.163	2
10	0.2.90.164/30	0.2.90.164	0.2.90.165	0.2.90.166	0.2.90.167	2
11	0.2.90.168/30	0.2.90.168	0.2.90.169	0.2.90.170	0.2.90.171	2
12	0.2.90.172/30	0.2.90.172	0.2.90.173	0.2.90.174	0.2.90.175	2
13	0.2.90.176/30	0.2.90.176	0.2.90.177	0.2.90.178	0.2.90.179	2
14	0.2.90.180/30	0.2.90.180	0.2.90.181	0.2.90.182	0.2.90.183	2
15	0.2.90.184/30	0.2.90.184	0.2.90.185	0.2.90.186	0.2.90.187	2
16	0.2.90.188/30	0.2.90.188	0.2.90.189	0.2.90.190	0.2.90.191	2

IP Address Sample

Showing first 16 of 64 total IPs.

0.2.90.128 net

0.2.90.129

0.2.90.130

0.2.90.131

0.2.90.132

0.2.90.133

0.2.90.134

0.2.90.135

0.2.90.136

0.2.90.137

0.2.90.138

0.2.90.139

0.2.90.140

0.2.90.141

0.2.90.142

0.2.90.143

… 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 0.2.90.128/25 Sibling /26 block 0.2.90.192/26

Adjacent Prefix Sizes

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