123.151.10.0/23
AS58542 · Tianjij,300000
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inetnum: 123.151.0.0 - 123.151.15.255 netname: TIANJIN-DINGSHENG-LTD descr: DINGSHENG-LTD descr: TIANJIN CITY country: CN admin-c: AT370-AP tech-c: AT370-AP mnt-by: MAINT-CHINANET-TJ status: ASSIGNED NON-PORTABLE changed: ipadmin@north.cn.net 20080321 source: APNIC person: admin tjtele nic-hdl: AT370-AP e-mail: tjipback@yahoo.com address: No.11 LIUJING ROAD ,HEDONG ,TIANJIN,CHINA phone: +86-22-85580499 fax-no: +86-22-85580970 country: CN changed: ipadmin@north.cn.net 20060508 changed: zhengzm@gsta.com 20140401 mnt-by: MAINT-CHINANET-TJ source: APNIC
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What are IP address ranges?
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.
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