Solved

ISP users and their IP address

Posted on 2002-06-28
6
318 Views
Last Modified: 2013-11-30
Hello,
is it possible to find the range of IP addresses an ISP use for its users.I mean, using WhoIs you can find the addresses of the ISP's servers, but how about users?
0
Comment
Question by:gigiotto
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 12

Expert Comment

by:pjknibbs
ID: 7116940
I really can't see a legitimate reason you'd want this information--care to enlighten us?
0
 
LVL 51

Expert Comment

by:ahoffmann
ID: 7117245
http://www.ripe.net/
It's public somegow, anyway ...
0
 
LVL 2

Accepted Solution

by:
scott_renton earned 100 total points
ID: 7117685
Yes, sort of.  I think what your looking for is the Classless Internet Domain Routing (CIDR) blocks used by a particular ISP.  These are the "ranges" of IP address used by a particular ISP for their dial up users.

My personal favorite for quick and dirty searches is http://www.arin.net

Put in the adddress you have for a given ISP,  and it will return the address "block" that ISP uses.  Look for the line labeled Netblock in the response.

Hope this helps.
0
Salesforce Made Easy to Use

On-screen guidance at the moment of need enables you & your employees to focus on the core, you can now boost your adoption rates swiftly and simply with one easy tool.

 
LVL 41

Expert Comment

by:stevenlewis
ID: 7117822
0
 
LVL 2

Expert Comment

by:heheman3000
ID: 7118977
or you could just use winipconfig from your own comp and ses the IP block AND the subnet mask without going to all that trouble...
0
 

Expert Comment

by:CleanupPing
ID: 9155569
gigiotto:
This old question needs to be finalized -- accept an answer, split points, or get a refund.  For information on your options, please click here-> http:/help/closing.jsp#1 
EXPERTS:
Post your closing recommendations!  No comment means you don't care.
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, I am going to show you how to simulate a multi-site Lab environment on a single Hyper-V host. I use this method successfully in my own lab to simulate three fully routed global AD Sites on a Windows 10 Hyper-V host.
This article explains the fundamentals of industrial networking which ultimately is the backbone network which is providing communications for process devices like robots and other not so interesting stuff.
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…
Suggested Courses
Course of the Month9 days, 3 hours left to enroll

615 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question