Good places to start are:
IANA, INTERNET PROTOCOL V4 ADDRESS SPACE:
http://www.iana.org/assignments/ipv4-address-space
Internet Domain Survey:
http://www.isc.org/ds/
Telcordia's Netsizer, which includes breakout by domains:
http://www.netsizer.com/
BGP Routing table statistics:
http://www.apnic.net/stats/bgp/
I am not aware of any publication listing the ratio of networking
equipment to hosts. You will have to conduct some statistical sampling,
e.g. get a few friendly domains administrators to tell you their ratios
and extrapolate. I do not advise that you try the hacker's path, i.e.
pick address at random and use hackers' tools to remotely sense the type
of the equipment; it is bad practice, and your results would be tainted
by statistical errors due to firewall practices.
-- Christian Huitema
-----Original Message-----
From: Jian Bo Huang [mailto:eem3jh(_at_)surrey(_dot_)ac(_dot_)uk]
Sent: Friday, February 15, 2002 8:03 AM
To: ietf
Subject: Any idea the ratio of end user workstations to network
equipments
Importance: High
Dear Sirs,
For my project needs, I want know some statistic data on the usage of
IP
address. That means:
1) How many addresses are occupied and how many are unassigned?
2) How many addresses are used for servers, routers and other network
equipments, in contrast with the user end PCs or workstations? That is
the ratio of end user workstations to network equipments.
I tried to find, but failed on no idea! Have you any suggestion?
Thank you!
Truly yours,
Jian Bo Huang
MSc Student
Department of Electronic Engineering,
University of Surrey
Guildford, Surrey
GU2 7XH, UK
Email: eem3jh(_at_)surrey(_dot_)ac(_dot_)uk
Or jbhuang(_at_)acm(_dot_)org
Phone: +44-870-2820955