Network Information

Calculate Network

IP address

Netmask

Information: /32 and /31 are not valid cidr netmasks for networks. /31 makes no sense and /32 is a direct host.

Infobox IPv4

Private addresses
Private network addresses are not allocated to any specific organization. The following IPv4 address ranges are free of use (RFC 1597)

Network	From	To	Size	Info
10.0.0.0/8	10.0.0.0	10.255.255.255	16.777.216	single class
172.16.0.0/12	172.16.0.0	172.31.255.255	1.048.576	16 contiguous class B
192.168.0.0/16	192.168.0.0	192.168.255.255	65.536	256 contiguous class C

Shared addresses
Dedicated space for carrier-grade NAT deployment (RFC 6598)

Network	From	To	Size
100.64.0.0/10	100.64.0.0	169.254.255.255	4.194.304

Link Local addresses
Using Zeroconf or Automatic Private IP Addressing (APIPA), end devices can automatically use an IP address from this range (RFC 5735)

Network	From	To	Size
169.254.0.0/16	169.254.0.0	169.254.255.255	65.536

Comparison table network sizes

CIDR	Mask	Hex	Bin
1	128.0.0.0	80000000	10000000000000000000000000000000
2	192.0.0.0	C0000000	11000000000000000000000000000000
3	224.0.0.0	E0000000	11100000000000000000000000000000
4	240.0.0.0	F0000000	11110000000000000000000000000000
5	248.0.0.0	F8000000	11111000000000000000000000000000
6	252.0.0.0	FC000000	11111100000000000000000000000000
7	254.0.0.0	FE000000	11111110000000000000000000000000
8	255.0.0.0	FF000000	11111111000000000000000000000000
9	255.128.0.0	FF800000	11111111100000000000000000000000
10	255.192.0.0	FFC00000	11111111110000000000000000000000
11	255.224.0.0	FFE00000	11111111111000000000000000000000
12	255.240.0.0	FFF00000	11111111111100000000000000000000
13	255.248.0.0	FFF80000	11111111111110000000000000000000
14	255.252.0.0	FFFC0000	11111111111111000000000000000000
15	255.254.0.0	FFFE0000	11111111111111100000000000000000
16	255.255.0.0	FFFF0000	11111111111111110000000000000000
17	255.255.128.0	FFFF8000	11111111111111111000000000000000
18	255.255.192.0	FFFFC000	11111111111111111100000000000000
19	255.255.224.0	FFFFE000	11111111111111111110000000000000
20	255.255.240.0	FFFFF000	11111111111111111111000000000000
21	255.255.248.0	FFFFF800	11111111111111111111100000000000
22	255.255.252.0	FFFFFC00	11111111111111111111110000000000
23	255.255.254.0	FFFFFE00	11111111111111111111111000000000
24	255.255.255.0	FFFFFF00	11111111111111111111111100000000
25	255.255.255.128	FFFFFF80	11111111111111111111111110000000
26	255.255.255.192	FFFFFFC0	11111111111111111111111111000000
27	255.255.255.224	FFFFFFE0	11111111111111111111111111100000
28	255.255.255.240	FFFFFFF0	11111111111111111111111111110000
29	255.255.255.248	FFFFFFF8	11111111111111111111111111111000
30	255.255.255.252	FFFFFFFC	11111111111111111111111111111100
31	255.255.255.254	FFFFFFFE	11111111111111111111111111111110
32	255.255.255.255	FFFFFFFF	11111111111111111111111111111111