请教各位DX一个关于安全的问题?

zmkm

请教一个问题,域名信息可以从CNNIC获得,但我一直不明白IP地址所在地址位置的信息从何处获得?国内由哪个机构维护?国际上由哪个机构维护? 另外如何获得IP地址信息？我认为应该有一个IP地址数据库,是否免费提供?收费的话,找哪个单位联系?请指教,谢谢!!!

omni

arin.net  - American Registry for Internet Numbers\r\nripe.net  - Réseaux IP Européens (European Registry)\r\napnic.net  - Asia Pacific Network Information Centre (Asia Pacific Registry)\r\nlacnic.net  - Latin American and Caribbean Internet Addresses Registry (Latin American Registry)\r\n\r\nIP is not free. \r\nCategory     Fee (US Dollars)      Allocation Size\r\nSmall          $2,250/year            /24 - /19* \r\nMedium      $4,500/year           > /19 - /16 \r\nLarge         $9K/year >            /16 - /14 \r\nX-Large      $18K/year             > /14 \r\nEffective January 1, 2002 \r\n\r\n*The minimum block of IP address space assigned by ARIN is a /20. Smaller blocks obtained directly from ARIN are the least likely to be globally routable.\r\n\r\nOther registries have similar fee schedules.\r\n\r\nNormally, for very small users - less than 512 IPs (2 C class) - your ISP will provide static ip to you. If you switch ISP, you can not take ip with you.\r\n\r\nm1.5c

zmkm

我主要考虑IP地址信息(如IP地址所对应的国家/地区),不知是否免费获得?从何处获得?收费的话,找哪个单位联系?

omni

whois search is free.\r\n\r\nThe following pages will let you search ip address\r\n\r\nhttp://ws.arin.net/cgi-bin/whois.pl\r\nhttp://www.ripe.net/perl/whois/\r\nhttp://www.apnic.org/search/index.html\r\nhttp://lacnic.net/cgi-bin/lacnic/whois\r\n\r\ne.g. search 64.58.76.0 will give you yahoo\r\nhttp://ws.arin.net/cgi-bin/whois.pl?queryinput=!%20NET-64-58-76-0-1\r\n\r\nm1.5c