If you understand any of those words, that is, of course. As said, I live in a different OSI layer. I read XML and write and install some software from time to time. Sometimes i even write documents in plain english.
Please bear with me while i ask these stupid questions. In the end, the problem is not how to calculate a CIDR prefix length (i really had to google that), the problem is what the most accurate way is to tell if a website visitor is coming from Uganda or not, excluding VSAT. For this I would like to find a source that is 1. accurate, 2 easily updateable. From what i understand now, Maxmind definitly qualifies for 2 (once its configured, just download the .dat file every month). However, I am not sure yet, about its accuracy. Lets look at the delta between the afrinic list and Maxmind: This is what Maxmind has, and afrinic has not: 62.12.40.96 62.12.40.103 emperion.net SE 63.103.129.0 63.103.129.255 ?? 69.36.44.112 69.36.44.119 This is bou.or.ug Traffic is not going via the UIXP 80.255.40.0 80.255.40.7 Intelsat 80.255.40.84 80.255.40.191 more Intelsat 81.199.16.0 81.199.31.255 ?? 83.229.48.144 83.229.48.151 sky-vision.net 193.219.221.48 193.219.221.63 taide.net 194.153.153.0 194.153.153.127 ripe.net 196.201.144.32 196.201.144.255 iwayafrica.com This is what afrinic has and Maxmind has not: 212.88.96.0/19 or (eh, this calculation is really difficult, and probably wrong): 212.88.96.0 212.88.96.31 mtn.co.ug So, while the Maxmind database seems suitable for things like add-delivery, the afrinic list seems indeed to be the more accurate in telling if an IP is connected to the IX or not. (if you work out what the stuff behind the / means ;-) Though i still dont know if the afrinic list is also the list that is in the routers where its decided which traffic goes up the satelite, and which stays here. For now i will opt for using the afrinic list in my .htaccess files, and http redirects. Asking the user where he is, has proven not to be reliable, and i run a server, not a network, so doing advanced routing stuff is also out of the question. Thanx for all the feedback. If you are interested in the .htaccess file, let me know and i will post it. rgds, reinier (now, for people who also dont know how these subnets work exacltly, i did some surfing to see if i could understand. I found: http://en.wikipedia.org/wiki/Subnetwork about subnets and even the table at the bottom of this page bout a /20 subnet http://www.cisco.com/en/US/docs/security/vpn5000/sw/sw60/configuration/guide/IPAddr.html On Saturday 17 November 2007 13:22:22 Ernest - (AfriNIC) wrote: > >> I posted the list of afrinic IP's before, and one of the subnets they assign > >> to uganda is 41.220.0.0. > > > > This should be 41.220.0.0/20 not the entire /16. > > That is why I advised you to use the web interface, Mr. Battenberg. > > If he insists on using the ftp stats, they contain the "network" address > and a "host count". Other parameters like CIDR prefix length or subnet > mask can then easily be deduced. > > eb > -- rgds, Reinier Battenberg Director Mountbatten Ltd. +256 782 801 749 www.mountbatten.net _______________________________________________ LUG mailing list [email protected] http://kym.net/mailman/listinfo/lug %LUG is generously hosted by INFOCOM http://www.infocom.co.ug/ The above comments and data are owned by whoever posted them (including attachments if any). The List's Host is not responsible for them in any way. ---------------------------------------
