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URL Numbers..what are they?

Discussion in 'General Security' started by Rick57, Apr 3, 2009.

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  1. Rick57

    Rick57 Thread Starter

    Joined:
    Jul 8, 2006
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    Hi all, I am running Vista and using PC Doctor for protection. I get pop-ups regularly that say a "Bad Website" is blocked??? All I get are the site numbers such as:

    68.36.166.127

    How can I determine if this website is necessary or if I should block it? I get 5- 10 of thses a day. I am afraid that if I block all of these, I may disable some programs. Is ther some way I can tell what these numbers are referring to?
     
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  3. Jason08

    Jason08

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    Oct 13, 2008
    Messages:
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    A number like that would be the website's IP address.
     
  4. TOGG

    TOGG

    Joined:
    Apr 2, 2002
    Messages:
    5,839
    This is part of what Wikipedia has to say about IP addresses;
    "An Internet Protocol (IP) address is a numerical identification (logical address) that is assigned to devices participating in a computer network utilizing the Internet Protocol for communication between its nodes.[1] Although IP addresses are stored as binary numbers, they are usually displayed in human-readable notations, such as 208.77.188.166 (for IPv4), and 2001:db8:0:1234:0:567:1:1 (for IPv6)."

    The particular IP address you posted appears to have something to do with Comcast. Are they your service provider? This is what I got when I queried the sever at that address;

    "Initiating server query ...
    Looking up the domain name for IP: 68.36.166.127
    The domain name for the IP address is: c-68-36-166-127.hsd1.nj.comcast.net
    Connecting to the server on standard HTTP port: 80
    [Connected] Requesting the server's default page.
    Error retrieving page from server: 10054"

    I have no idea if the error mentioned means anything.
     
  5. Jim Pivonka

    Jim Pivonka

    Joined:
    May 4, 2003
    Messages:
    28
    1) You are on the right track in wanting to know if these are good or bad websites. Since you are new to the game, and since I, and possibly you, do not know PC Doctor, there is no particular reason to trust that program to decide what sites we visit and do not visit. On the other hand, if you can determine that the program has a long history and good reputation, and uses open and well defined methods of determining what sites are blocked and how that is done, then the Dr. may be OK

    For my purposes I do my site blocking using the "hosts" file, which is a natural, preexisting Windows feature. More below ->

    2) Blocking web sites should not disable a software program on your machine. It might make some online programs (software such as online tax preparation, etc.) which are not on your machine but on the internet, if access to the sites hosting those programs are blocked.

    3) The numbers you are seeing are the addresses used on the internet to find locations on the internet - they are WWW street addresses. All the "www.xyz.com" addresses you see are "domain names". Each domain name is associated with a computer facility which hosts the information or services provided by the people who own or control the domain. Those computer facilities have specific computer friendly addresses, under the IP or Internet Protocol. Your computer also has a specific address, assigned by your ISP or information service provider. These are called IP addresses, and that is what is showing up on your screen.

    These addresses allow a computer based communications network - the internet or www - to pass messages back and forth between your computer and the computer hosting the information or services offered by the domain.

    The translation between the human friendly domain name www.xyz.com and the machine friendly IP address is handled by specialized computers, using tables listing the relationship between every domain name and the IP address numbers associated with each of them. This function is called DNS, if you run accross it.

    You can tell what these numbers are referring to by looking them up on DNS lookup and IP address lookup sites, such as are at http://whois.domaintools.com/ and many other such facilities. You can experiment to see which ones you like.....

    EDIT: Regarding the use of the "hosts" file to filter out known bad web sites by IP address:
    I use the hosts file which is provided by the MVPS organization at http://www.mvps.org/winhelp2002/hosts.htm

    Explanations of what that file is, how it works, how to use it, etc. are at the site. The file can be edited to add additional IP addresses.

    A similar hosts file is provided by Spybot S&D, a top anti spyware/adware site. You might find these lists more or less credible and easy to use than the Dr. program you are currently using - I am unfamiliar with that one.
     
  6. Elvandil

    Elvandil

    Joined:
    Aug 1, 2003
    Messages:
    51,988
    Use Netalyzer
    Whois > QueryDomain
    and it will tell you all about the IP address.

    68.36.166.127 is the same as:

    %36%38%2E%33%36%2E%31%36%36%2E%31%32%37
    1143252607
    %31%31%34%33%32%35%32%36%30%37
    c-68-36-166-127.hsd1.nj.comcast.net
    %63%2D%36%38%2D%33%36%2D%31%36%36%2D%31%32%37%2E%68%73%64%31%2E%6E%6A%2E%63%6F%6D%63%61%73%74%2E%6E%65%74

    Any of those are IP addresses and you can get to the sites by putting them in your browser's address box. Actually, if you use the IP address, the site comes up faster since the URL does not need to be parsed.
     
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