28.155.151.64/26

Public

Class A — /26 prefix — 62 usable hosts

Network Address

28.155.151.64

Broadcast Address

28.155.151.127

Subnet Mask

255.255.255.192

Usable Hosts

First Usable IP

28.155.151.65

Last Usable IP

28.155.151.126

Total IPs

Prefix Length

/26

Network address — the base address of the block (28.155.151.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 28.155.151.127 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	28.155.151.64/26
Network Address	28.155.151.64
Broadcast Address	28.155.151.127
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	28.155.151.65
Last Usable IP	28.155.151.126
Network (Hex)	0x1C9B9740
Broadcast (Hex)	0x1C9B977F
Address Type	Public / Globally Routable

Binary Representation

Network Address

00011100.10011011.10010111 00011100.10011011.10010111.01000000

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 28.155.151.64/26 into 2 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	28.155.151.64/27	28.155.151.64	28.155.151.65	28.155.151.94	28.155.151.95	30
2	28.155.151.96/27	28.155.151.96	28.155.151.97	28.155.151.126	28.155.151.127	30

Split 28.155.151.64/26 into 4 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	28.155.151.64/28	28.155.151.64	28.155.151.65	28.155.151.78	28.155.151.79	14
2	28.155.151.80/28	28.155.151.80	28.155.151.81	28.155.151.94	28.155.151.95	14
3	28.155.151.96/28	28.155.151.96	28.155.151.97	28.155.151.110	28.155.151.111	14
4	28.155.151.112/28	28.155.151.112	28.155.151.113	28.155.151.126	28.155.151.127	14

Split 28.155.151.64/26 into 8 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	28.155.151.64/29	28.155.151.64	28.155.151.65	28.155.151.70	28.155.151.71	6
2	28.155.151.72/29	28.155.151.72	28.155.151.73	28.155.151.78	28.155.151.79	6
3	28.155.151.80/29	28.155.151.80	28.155.151.81	28.155.151.86	28.155.151.87	6
4	28.155.151.88/29	28.155.151.88	28.155.151.89	28.155.151.94	28.155.151.95	6
5	28.155.151.96/29	28.155.151.96	28.155.151.97	28.155.151.102	28.155.151.103	6
6	28.155.151.104/29	28.155.151.104	28.155.151.105	28.155.151.110	28.155.151.111	6
7	28.155.151.112/29	28.155.151.112	28.155.151.113	28.155.151.118	28.155.151.119	6
8	28.155.151.120/29	28.155.151.120	28.155.151.121	28.155.151.126	28.155.151.127	6

Split 28.155.151.64/26 into 16 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	28.155.151.64/30	28.155.151.64	28.155.151.65	28.155.151.66	28.155.151.67	2
2	28.155.151.68/30	28.155.151.68	28.155.151.69	28.155.151.70	28.155.151.71	2
3	28.155.151.72/30	28.155.151.72	28.155.151.73	28.155.151.74	28.155.151.75	2
4	28.155.151.76/30	28.155.151.76	28.155.151.77	28.155.151.78	28.155.151.79	2
5	28.155.151.80/30	28.155.151.80	28.155.151.81	28.155.151.82	28.155.151.83	2
6	28.155.151.84/30	28.155.151.84	28.155.151.85	28.155.151.86	28.155.151.87	2
7	28.155.151.88/30	28.155.151.88	28.155.151.89	28.155.151.90	28.155.151.91	2
8	28.155.151.92/30	28.155.151.92	28.155.151.93	28.155.151.94	28.155.151.95	2
9	28.155.151.96/30	28.155.151.96	28.155.151.97	28.155.151.98	28.155.151.99	2
10	28.155.151.100/30	28.155.151.100	28.155.151.101	28.155.151.102	28.155.151.103	2
11	28.155.151.104/30	28.155.151.104	28.155.151.105	28.155.151.106	28.155.151.107	2
12	28.155.151.108/30	28.155.151.108	28.155.151.109	28.155.151.110	28.155.151.111	2
13	28.155.151.112/30	28.155.151.112	28.155.151.113	28.155.151.114	28.155.151.115	2
14	28.155.151.116/30	28.155.151.116	28.155.151.117	28.155.151.118	28.155.151.119	2
15	28.155.151.120/30	28.155.151.120	28.155.151.121	28.155.151.122	28.155.151.123	2
16	28.155.151.124/30	28.155.151.124	28.155.151.125	28.155.151.126	28.155.151.127	2

IP Address Sample

Showing first 16 of 64 total IPs.

28.155.151.64 net

28.155.151.65

28.155.151.66

28.155.151.67

28.155.151.68

28.155.151.69

28.155.151.70

28.155.151.71

28.155.151.72

28.155.151.73

28.155.151.74

28.155.151.75

28.155.151.76

28.155.151.77

28.155.151.78

28.155.151.79

… 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 28.155.151.0/25 Sibling /26 block 28.155.151.0/26

Adjacent Prefix Sizes

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