39.2.98.128/25

Public

Class A — /25 prefix — 126 usable hosts

Network Address

39.2.98.128

Broadcast Address

39.2.98.255

Subnet Mask

255.255.255.128

Usable Hosts

126

First Usable IP

39.2.98.129

Last Usable IP

39.2.98.254

Total IPs

128

Prefix Length

/25

Network address — the base address of the block (39.2.98.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 39.2.98.255 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 126 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.255.128 is the dotted-decimal equivalent of /25. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation	39.2.98.128/25
Network Address	39.2.98.128
Broadcast Address	39.2.98.255
Subnet Mask	255.255.255.128
Wildcard Mask	0.0.0.127
Prefix Length	/25
IP Address Class	Class A
Total IP Addresses	128
Usable Host Addresses	126
First Usable IP	39.2.98.129
Last Usable IP	39.2.98.254
Network (Hex)	0x27026280
Broadcast (Hex)	0x270262FF
Address Type	Public / Globally Routable

Binary Representation

Network Address

00100111.00000010.01100010 00100111.00000010.01100010.10000000

Subnet Mask

11111111.11111111.11111111.10000000

The first 25 bits (1s in the mask) identify the network. The remaining 7 bits identify hosts within the network.

Split into Equal Subnets

Split 39.2.98.128/25 into 2 equal /26 subnets (62 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.2.98.128/26	39.2.98.128	39.2.98.129	39.2.98.190	39.2.98.191	62
2	39.2.98.192/26	39.2.98.192	39.2.98.193	39.2.98.254	39.2.98.255	62

Split 39.2.98.128/25 into 4 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.2.98.128/27	39.2.98.128	39.2.98.129	39.2.98.158	39.2.98.159	30
2	39.2.98.160/27	39.2.98.160	39.2.98.161	39.2.98.190	39.2.98.191	30
3	39.2.98.192/27	39.2.98.192	39.2.98.193	39.2.98.222	39.2.98.223	30
4	39.2.98.224/27	39.2.98.224	39.2.98.225	39.2.98.254	39.2.98.255	30

Split 39.2.98.128/25 into 8 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.2.98.128/28	39.2.98.128	39.2.98.129	39.2.98.142	39.2.98.143	14
2	39.2.98.144/28	39.2.98.144	39.2.98.145	39.2.98.158	39.2.98.159	14
3	39.2.98.160/28	39.2.98.160	39.2.98.161	39.2.98.174	39.2.98.175	14
4	39.2.98.176/28	39.2.98.176	39.2.98.177	39.2.98.190	39.2.98.191	14
5	39.2.98.192/28	39.2.98.192	39.2.98.193	39.2.98.206	39.2.98.207	14
6	39.2.98.208/28	39.2.98.208	39.2.98.209	39.2.98.222	39.2.98.223	14
7	39.2.98.224/28	39.2.98.224	39.2.98.225	39.2.98.238	39.2.98.239	14
8	39.2.98.240/28	39.2.98.240	39.2.98.241	39.2.98.254	39.2.98.255	14

Split 39.2.98.128/25 into 16 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.2.98.128/29	39.2.98.128	39.2.98.129	39.2.98.134	39.2.98.135	6
2	39.2.98.136/29	39.2.98.136	39.2.98.137	39.2.98.142	39.2.98.143	6
3	39.2.98.144/29	39.2.98.144	39.2.98.145	39.2.98.150	39.2.98.151	6
4	39.2.98.152/29	39.2.98.152	39.2.98.153	39.2.98.158	39.2.98.159	6
5	39.2.98.160/29	39.2.98.160	39.2.98.161	39.2.98.166	39.2.98.167	6
6	39.2.98.168/29	39.2.98.168	39.2.98.169	39.2.98.174	39.2.98.175	6
7	39.2.98.176/29	39.2.98.176	39.2.98.177	39.2.98.182	39.2.98.183	6
8	39.2.98.184/29	39.2.98.184	39.2.98.185	39.2.98.190	39.2.98.191	6
9	39.2.98.192/29	39.2.98.192	39.2.98.193	39.2.98.198	39.2.98.199	6
10	39.2.98.200/29	39.2.98.200	39.2.98.201	39.2.98.206	39.2.98.207	6
11	39.2.98.208/29	39.2.98.208	39.2.98.209	39.2.98.214	39.2.98.215	6
12	39.2.98.216/29	39.2.98.216	39.2.98.217	39.2.98.222	39.2.98.223	6
13	39.2.98.224/29	39.2.98.224	39.2.98.225	39.2.98.230	39.2.98.231	6
14	39.2.98.232/29	39.2.98.232	39.2.98.233	39.2.98.238	39.2.98.239	6
15	39.2.98.240/29	39.2.98.240	39.2.98.241	39.2.98.246	39.2.98.247	6
16	39.2.98.248/29	39.2.98.248	39.2.98.249	39.2.98.254	39.2.98.255	6

IP Address Sample

Showing first 16 of 128 total IPs.

39.2.98.128 net

39.2.98.129

39.2.98.130

39.2.98.131

39.2.98.132

39.2.98.133

39.2.98.134

39.2.98.135

39.2.98.136

39.2.98.137

39.2.98.138

39.2.98.139

39.2.98.140

39.2.98.141

39.2.98.142

39.2.98.143

… 112 more IPs …

/25 Subnet Reference

Total IPs 128

Usable Hosts 126

Subnet Mask 255.255.255.128

Wildcard 0.0.0.127

Full /25 reference →

Related Ranges

Parent /24 block 39.2.98.0/24 Sibling /25 block 39.2.98.0/25

Adjacent Prefix Sizes

/23 510 hosts /24 254 hosts /25 126 hosts /26 62 hosts /27 30 hosts