39.2.51.128/26

Public

Class A — /26 prefix — 62 usable hosts

Network Address

39.2.51.128

Broadcast Address

39.2.51.191

Subnet Mask

255.255.255.192

Usable Hosts

First Usable IP

39.2.51.129

Last Usable IP

39.2.51.190

Total IPs

Prefix Length

/26

Network address — the base address of the block (39.2.51.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 39.2.51.191 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	39.2.51.128/26
Network Address	39.2.51.128
Broadcast Address	39.2.51.191
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	39.2.51.129
Last Usable IP	39.2.51.190
Network (Hex)	0x27023380
Broadcast (Hex)	0x270233BF
Address Type	Public / Globally Routable

Binary Representation

Network Address

00100111.00000010.00110011 00100111.00000010.00110011.10000000

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 39.2.51.128/26 into 2 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.2.51.128/27	39.2.51.128	39.2.51.129	39.2.51.158	39.2.51.159	30
2	39.2.51.160/27	39.2.51.160	39.2.51.161	39.2.51.190	39.2.51.191	30

Split 39.2.51.128/26 into 4 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.2.51.128/28	39.2.51.128	39.2.51.129	39.2.51.142	39.2.51.143	14
2	39.2.51.144/28	39.2.51.144	39.2.51.145	39.2.51.158	39.2.51.159	14
3	39.2.51.160/28	39.2.51.160	39.2.51.161	39.2.51.174	39.2.51.175	14
4	39.2.51.176/28	39.2.51.176	39.2.51.177	39.2.51.190	39.2.51.191	14

Split 39.2.51.128/26 into 8 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.2.51.128/29	39.2.51.128	39.2.51.129	39.2.51.134	39.2.51.135	6
2	39.2.51.136/29	39.2.51.136	39.2.51.137	39.2.51.142	39.2.51.143	6
3	39.2.51.144/29	39.2.51.144	39.2.51.145	39.2.51.150	39.2.51.151	6
4	39.2.51.152/29	39.2.51.152	39.2.51.153	39.2.51.158	39.2.51.159	6
5	39.2.51.160/29	39.2.51.160	39.2.51.161	39.2.51.166	39.2.51.167	6
6	39.2.51.168/29	39.2.51.168	39.2.51.169	39.2.51.174	39.2.51.175	6
7	39.2.51.176/29	39.2.51.176	39.2.51.177	39.2.51.182	39.2.51.183	6
8	39.2.51.184/29	39.2.51.184	39.2.51.185	39.2.51.190	39.2.51.191	6

Split 39.2.51.128/26 into 16 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.2.51.128/30	39.2.51.128	39.2.51.129	39.2.51.130	39.2.51.131	2
2	39.2.51.132/30	39.2.51.132	39.2.51.133	39.2.51.134	39.2.51.135	2
3	39.2.51.136/30	39.2.51.136	39.2.51.137	39.2.51.138	39.2.51.139	2
4	39.2.51.140/30	39.2.51.140	39.2.51.141	39.2.51.142	39.2.51.143	2
5	39.2.51.144/30	39.2.51.144	39.2.51.145	39.2.51.146	39.2.51.147	2
6	39.2.51.148/30	39.2.51.148	39.2.51.149	39.2.51.150	39.2.51.151	2
7	39.2.51.152/30	39.2.51.152	39.2.51.153	39.2.51.154	39.2.51.155	2
8	39.2.51.156/30	39.2.51.156	39.2.51.157	39.2.51.158	39.2.51.159	2
9	39.2.51.160/30	39.2.51.160	39.2.51.161	39.2.51.162	39.2.51.163	2
10	39.2.51.164/30	39.2.51.164	39.2.51.165	39.2.51.166	39.2.51.167	2
11	39.2.51.168/30	39.2.51.168	39.2.51.169	39.2.51.170	39.2.51.171	2
12	39.2.51.172/30	39.2.51.172	39.2.51.173	39.2.51.174	39.2.51.175	2
13	39.2.51.176/30	39.2.51.176	39.2.51.177	39.2.51.178	39.2.51.179	2
14	39.2.51.180/30	39.2.51.180	39.2.51.181	39.2.51.182	39.2.51.183	2
15	39.2.51.184/30	39.2.51.184	39.2.51.185	39.2.51.186	39.2.51.187	2
16	39.2.51.188/30	39.2.51.188	39.2.51.189	39.2.51.190	39.2.51.191	2

IP Address Sample

Showing first 16 of 64 total IPs.

39.2.51.128 net

39.2.51.129

39.2.51.130

39.2.51.131

39.2.51.132

39.2.51.133

39.2.51.134

39.2.51.135

39.2.51.136

39.2.51.137

39.2.51.138

39.2.51.139

39.2.51.140

39.2.51.141

39.2.51.142

39.2.51.143

… 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 39.2.51.128/25 Sibling /26 block 39.2.51.192/26

Adjacent Prefix Sizes

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