100.77.173.64/26

Public

Class A — /26 prefix — 62 usable hosts

Network Address

100.77.173.64

Broadcast Address

100.77.173.127

Subnet Mask

255.255.255.192

Usable Hosts

First Usable IP

100.77.173.65

Last Usable IP

100.77.173.126

Total IPs

Prefix Length

/26

Network address — the base address of the block (100.77.173.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 100.77.173.127 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	100.77.173.64/26
Network Address	100.77.173.64
Broadcast Address	100.77.173.127
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	100.77.173.65
Last Usable IP	100.77.173.126
Network (Hex)	0x644DAD40
Broadcast (Hex)	0x644DAD7F
Address Type	Public / Globally Routable

Binary Representation

Network Address

01100100.01001101.10101101 01100100.01001101.10101101.01000000

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 100.77.173.64/26 into 2 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	100.77.173.64/27	100.77.173.64	100.77.173.65	100.77.173.94	100.77.173.95	30
2	100.77.173.96/27	100.77.173.96	100.77.173.97	100.77.173.126	100.77.173.127	30

Split 100.77.173.64/26 into 4 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	100.77.173.64/28	100.77.173.64	100.77.173.65	100.77.173.78	100.77.173.79	14
2	100.77.173.80/28	100.77.173.80	100.77.173.81	100.77.173.94	100.77.173.95	14
3	100.77.173.96/28	100.77.173.96	100.77.173.97	100.77.173.110	100.77.173.111	14
4	100.77.173.112/28	100.77.173.112	100.77.173.113	100.77.173.126	100.77.173.127	14

Split 100.77.173.64/26 into 8 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	100.77.173.64/29	100.77.173.64	100.77.173.65	100.77.173.70	100.77.173.71	6
2	100.77.173.72/29	100.77.173.72	100.77.173.73	100.77.173.78	100.77.173.79	6
3	100.77.173.80/29	100.77.173.80	100.77.173.81	100.77.173.86	100.77.173.87	6
4	100.77.173.88/29	100.77.173.88	100.77.173.89	100.77.173.94	100.77.173.95	6
5	100.77.173.96/29	100.77.173.96	100.77.173.97	100.77.173.102	100.77.173.103	6
6	100.77.173.104/29	100.77.173.104	100.77.173.105	100.77.173.110	100.77.173.111	6
7	100.77.173.112/29	100.77.173.112	100.77.173.113	100.77.173.118	100.77.173.119	6
8	100.77.173.120/29	100.77.173.120	100.77.173.121	100.77.173.126	100.77.173.127	6

Split 100.77.173.64/26 into 16 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	100.77.173.64/30	100.77.173.64	100.77.173.65	100.77.173.66	100.77.173.67	2
2	100.77.173.68/30	100.77.173.68	100.77.173.69	100.77.173.70	100.77.173.71	2
3	100.77.173.72/30	100.77.173.72	100.77.173.73	100.77.173.74	100.77.173.75	2
4	100.77.173.76/30	100.77.173.76	100.77.173.77	100.77.173.78	100.77.173.79	2
5	100.77.173.80/30	100.77.173.80	100.77.173.81	100.77.173.82	100.77.173.83	2
6	100.77.173.84/30	100.77.173.84	100.77.173.85	100.77.173.86	100.77.173.87	2
7	100.77.173.88/30	100.77.173.88	100.77.173.89	100.77.173.90	100.77.173.91	2
8	100.77.173.92/30	100.77.173.92	100.77.173.93	100.77.173.94	100.77.173.95	2
9	100.77.173.96/30	100.77.173.96	100.77.173.97	100.77.173.98	100.77.173.99	2
10	100.77.173.100/30	100.77.173.100	100.77.173.101	100.77.173.102	100.77.173.103	2
11	100.77.173.104/30	100.77.173.104	100.77.173.105	100.77.173.106	100.77.173.107	2
12	100.77.173.108/30	100.77.173.108	100.77.173.109	100.77.173.110	100.77.173.111	2
13	100.77.173.112/30	100.77.173.112	100.77.173.113	100.77.173.114	100.77.173.115	2
14	100.77.173.116/30	100.77.173.116	100.77.173.117	100.77.173.118	100.77.173.119	2
15	100.77.173.120/30	100.77.173.120	100.77.173.121	100.77.173.122	100.77.173.123	2
16	100.77.173.124/30	100.77.173.124	100.77.173.125	100.77.173.126	100.77.173.127	2

IP Address Sample

Showing first 16 of 64 total IPs.

100.77.173.64 net

100.77.173.65

100.77.173.66

100.77.173.67

100.77.173.68

100.77.173.69

100.77.173.70

100.77.173.71

100.77.173.72

100.77.173.73

100.77.173.74

100.77.173.75

100.77.173.76

100.77.173.77

100.77.173.78

100.77.173.79

… 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 100.77.173.0/25 Sibling /26 block 100.77.173.0/26

Adjacent Prefix Sizes

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