Block IP Range of City

Aperture · Jul 30, 2008, 06:16 PM

I know it is possible to block access to a site based on a broad IP range. (of say a country) Would it be possible, though, to obtain an IP range of a city and block access accordingly?

Thanks

Queso · Jul 30, 2008, 06:19 PM

CIDR blocks (basically ranges of public IP addresses) are allocated to ISPs, not geographically. So unless the place you want to block has a very limited set of service providers you're not going to be able to just blacklist it.

angelwatt · Jul 30, 2008, 06:33 PM

I concur. I've walked down that path before, or at least similar path.

gauchogolfer · Jul 30, 2008, 06:36 PM

Are you trying to block Redmond or Cupertino?

Aperture · Jul 30, 2008, 06:37 PM

Quote:

Originally Posted by Queso

CIDR blocks (basically ranges of public IP addresses) are allocated to ISPs, not geographically. So unless the place you want to block has a very limited set of service providers you're not going to be able to just blacklist it.

Got ya. When I check my external IP online it always estimates my city correctly and I was just curious if there was a way to act on that information.

Quote:

Originally Posted by gauchogolfer

Are you trying to block Redmond or Cupertino?

Nope, I was mainly just curious if it could be setup. Nice guess, though.

TEG · Jul 30, 2008, 06:54 PM

The only accept ion is Qatar (I believe), in which the entire nation shares a single IP address.

TEG

Aperture · Jul 30, 2008, 07:00 PM

Quote:

Originally Posted by TEG

The only accept ion is Qatar (I believe), in which the entire nation shares a single IP address.

TEG

I thought a country had an "IP range" based on the ISPs available in said county because of this site.

TEG · Jul 30, 2008, 07:06 PM

To some degree, Countries have IP ranges, but as we get closer to running out of IPv4 addresses, different parties in different countries trade them back and forth, muddying the waters.

TEG

Jul 30, 2008, 06:16 PM	#1
Aperture macrumors 68000 Join Date: Mar 2006 Location: PA	Block IP Range of City I know it is possible to block access to a site based on a broad IP range. (of say a country) Would it be possible, though, to obtain an IP range of a city and block access accordingly? Thanks __________________ Aluminum Macbook iPhone 3G

Jul 30, 2008, 06:19 PM	#2
Queso macrumors 603 Join Date: Mar 2006 Location: Sota el mar	CIDR blocks (basically ranges of public IP addresses) are allocated to ISPs, not geographically. So unless the place you want to block has a very limited set of service providers you're not going to be able to just blacklist it. __________________ Gary Ablett's Blue and White Army

Jul 30, 2008, 06:36 PM	#4
gauchogolfer macrumors Demi-God Join Date: Jan 2005 Location: American Riviera	Are you trying to block Redmond or Cupertino? __________________ Victoria Concordia Crescit

Jul 30, 2008, 06:54 PM	#6
TEG macrumors 601 Join Date: Jan 2002 Location: Langley, Washington	The only accept ion is Qatar (I believe), in which the entire nation shares a single IP address. TEG __________________ Apple and Dell are the only ones in this industry making money. They make it by being Wal-Mart. We make it by innovation-Steve Jobs The Tegian Zone-Wikipedia

Jul 30, 2008, 07:06 PM	#8
TEG macrumors 601 Join Date: Jan 2002 Location: Langley, Washington	To some degree, Countries have IP ranges, but as we get closer to running out of IPv4 addresses, different parties in different countries trade them back and forth, muddying the waters. TEG __________________ Apple and Dell are the only ones in this industry making money. They make it by being Wal-Mart. We make it by innovation-Steve Jobs The Tegian Zone-Wikipedia

Jul 30, 2008, 06:33 PM	#3
angelwatt macrumors 601 Join Date: Aug 2005 Location: Dayton, OH	I concur. I've walked down that path before, or at least similar path.

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