From: Scott Morris (swm@emanon.com)
Date: Mon Nov 13 2006 - 10:37:20 ART
They were originally defined by simple binary....
Class A addresses (0-127) begin with '0'
Class B addresses (128-191) begin with '1'
Class C addresses (192-223) begin with '11'
Class D addresses (224-239) begin with '111'
Class E addresses (240-255) begin with '1111'
So some of your references are incorrect.
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI-M/JNCI-J
IPExpert VP - Curriculum Development
IPExpert Sr. Technical Instructor
smorris@ipexpert.com
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
David Fuller
Sent: Monday, November 13, 2006 4:27 AM
To: ccielab@groupstudy.com
Subject: IP Address Range - Class D and E
Hi there
I'm finding different info as to which range of IPs is Class D and E.
Here are the 2 diffenret sets of info on the net:
1) Class D - 224-239
Class E - 240-255
2) Class D - 224-247
Class E - 248-255
Which one is correct? Based on the first octect definition, Item 1 seems
right, but then why they mention item 2 on the net?
Also, is there such thing as Public and Private IPs in Class D (or E)?
Thanks
Dave
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