IP Numbers

[Wanda Perez, TRI]

Hi Jeff, I hope the table help you
Regards Wanda
block size 	 dotted decimal 	 addresses 	 networks 
 /13 	 255.248.0.0 	 512,000 	 8 class B's or 2048 class C's
 /14 	 255.252.0.0 	 256,000 	 4 class B's or 1024 class C's 
 /15 	 255.254.0.0 	 128,000 	 2 class B's or 512 class C's 
 /16 	 255.255.0.0 	 64,000 	 1 class B or 256 class C's 
 /17 	 255.255.128.0 	 32,000 	 128 class C's 
 /18 	 255.255.192.0 	 16,000 	 64 class C's 
 /19 	 255.255.224.0 	 8,000 	 32 class C's 
 /20 	 255.255.240.0 	 4,000 	 16 class C's 
 /21 	 255.255.248.0 	 2,000 	 8 class C's 
 /22 	 255.255.252.0 	 1,000 	 4 class C's 
 /23 	 255.255.254.0 	 512 	 2 class C's 
 /24 	 255.255.255.0 	 256 	 1 class C 
 /25 	 255.255.255.128 	 128 	 1/2 class C 
 /26	 255.255.255.192 	 64 	 1/4 class C 
 /27 	 255.255.255.224 	 32 	 1/8 class C 
 /28 	 255.255.255.240 	 16 	 1/16 class C 
 /29 	 255.255.255.248 	 8 	 1/32 class C 
 /30 	 255.255.255.252 	 4 	 1/64 class C 
 /31 	 255.255.255.254 	 2 	 1/128 class C 
 /32 	 255.255.255.255 	 1 	 1/256 class C 

-----Original Message-----
From: Jeff Grossman [mailto:jeff at stikman.com]
Sent: Friday, May 10, 2002 4:18 PM
To: Bind List
Subject: IP Numbers



I always see references to IP blocks at 127.0.0.0/24 or 127.0.0.0/16.  What
do the last two digits after the "/" mean?

Can somebody point me somewhere where I can find this information out?

Thanks,
Jeff
-- 
Jeff Grossman (jeff at grossman.name)