39.151.73.0/25

Public

Class A — /25 prefix — 126 usable hosts

Network Address

39.151.73.0

Broadcast Address

39.151.73.127

Subnet Mask

255.255.255.128

Usable Hosts

126

First Usable IP

39.151.73.1

Last Usable IP

39.151.73.126

Total IPs

128

Prefix Length

/25

Network address — the base address of the block (39.151.73.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 39.151.73.127 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	39.151.73.0/25
Network Address	39.151.73.0
Broadcast Address	39.151.73.127
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	39.151.73.1
Last Usable IP	39.151.73.126
Network (Hex)	0x27974900
Broadcast (Hex)	0x2797497F
Address Type	Public / Globally Routable

Binary Representation

Network Address

00100111.10010111.01001001 00100111.10010111.01001001.00000000

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 39.151.73.0/25 into 2 equal /26 subnets (62 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.151.73.0/26	39.151.73.0	39.151.73.1	39.151.73.62	39.151.73.63	62
2	39.151.73.64/26	39.151.73.64	39.151.73.65	39.151.73.126	39.151.73.127	62

Split 39.151.73.0/25 into 4 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.151.73.0/27	39.151.73.0	39.151.73.1	39.151.73.30	39.151.73.31	30
2	39.151.73.32/27	39.151.73.32	39.151.73.33	39.151.73.62	39.151.73.63	30
3	39.151.73.64/27	39.151.73.64	39.151.73.65	39.151.73.94	39.151.73.95	30
4	39.151.73.96/27	39.151.73.96	39.151.73.97	39.151.73.126	39.151.73.127	30

Split 39.151.73.0/25 into 8 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.151.73.0/28	39.151.73.0	39.151.73.1	39.151.73.14	39.151.73.15	14
2	39.151.73.16/28	39.151.73.16	39.151.73.17	39.151.73.30	39.151.73.31	14
3	39.151.73.32/28	39.151.73.32	39.151.73.33	39.151.73.46	39.151.73.47	14
4	39.151.73.48/28	39.151.73.48	39.151.73.49	39.151.73.62	39.151.73.63	14
5	39.151.73.64/28	39.151.73.64	39.151.73.65	39.151.73.78	39.151.73.79	14
6	39.151.73.80/28	39.151.73.80	39.151.73.81	39.151.73.94	39.151.73.95	14
7	39.151.73.96/28	39.151.73.96	39.151.73.97	39.151.73.110	39.151.73.111	14
8	39.151.73.112/28	39.151.73.112	39.151.73.113	39.151.73.126	39.151.73.127	14

Split 39.151.73.0/25 into 16 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	39.151.73.0/29	39.151.73.0	39.151.73.1	39.151.73.6	39.151.73.7	6
2	39.151.73.8/29	39.151.73.8	39.151.73.9	39.151.73.14	39.151.73.15	6
3	39.151.73.16/29	39.151.73.16	39.151.73.17	39.151.73.22	39.151.73.23	6
4	39.151.73.24/29	39.151.73.24	39.151.73.25	39.151.73.30	39.151.73.31	6
5	39.151.73.32/29	39.151.73.32	39.151.73.33	39.151.73.38	39.151.73.39	6
6	39.151.73.40/29	39.151.73.40	39.151.73.41	39.151.73.46	39.151.73.47	6
7	39.151.73.48/29	39.151.73.48	39.151.73.49	39.151.73.54	39.151.73.55	6
8	39.151.73.56/29	39.151.73.56	39.151.73.57	39.151.73.62	39.151.73.63	6
9	39.151.73.64/29	39.151.73.64	39.151.73.65	39.151.73.70	39.151.73.71	6
10	39.151.73.72/29	39.151.73.72	39.151.73.73	39.151.73.78	39.151.73.79	6
11	39.151.73.80/29	39.151.73.80	39.151.73.81	39.151.73.86	39.151.73.87	6
12	39.151.73.88/29	39.151.73.88	39.151.73.89	39.151.73.94	39.151.73.95	6
13	39.151.73.96/29	39.151.73.96	39.151.73.97	39.151.73.102	39.151.73.103	6
14	39.151.73.104/29	39.151.73.104	39.151.73.105	39.151.73.110	39.151.73.111	6
15	39.151.73.112/29	39.151.73.112	39.151.73.113	39.151.73.118	39.151.73.119	6
16	39.151.73.120/29	39.151.73.120	39.151.73.121	39.151.73.126	39.151.73.127	6

IP Address Sample

Showing first 16 of 128 total IPs.

39.151.73.0 net

39.151.73.1

39.151.73.2

39.151.73.3

39.151.73.4

39.151.73.5

39.151.73.6

39.151.73.7

39.151.73.8

39.151.73.9

39.151.73.10

39.151.73.11

39.151.73.12

39.151.73.13

39.151.73.14

39.151.73.15

… 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 39.151.73.0/24 Sibling /25 block 39.151.73.128/25

Adjacent Prefix Sizes

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