81.31.171.0/24
AS12660 · Sharif University Of Technology
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inetnum: 81.31.168.0 - 81.31.171.255 netname: SHARIF-EDU-NET descr: Sharif University Of Technology country: IR admin-c: SA39375-RIPE tech-c: SA39374-RIPE status: ASSIGNED PA remarks: ***************************************** remarks: * Please send abuse reports to: * remarks: * abuse@sharif.edu * remarks: ***************************************** mnt-by: SHARIF-EDU-MNT mnt-routes: SHARIF-EDU-MNT created: 2002-09-30T09:57:13Z last-modified: 2019-01-28T05:32:17Z source: RIPE role: SHARIF-ITC-TECH address: IT Center, Sharif University of Technology address: Azadi Ave. - Tehran , IRAN e-mail: amin@sharif.edu tech-c: AOK5-RIPE tech-c: KS10416-RIPE tech-c: MG25940-RIPE nic-hdl: SA39374-RIPE mnt-by: SHARIF-EDU-MNT created: 2019-01-28T04:04:48Z last-modified: 2019-01-28T04:21:58Z source: RIPE role: SHARIF-ITC-ADMIN address: IT Center, Sharif University of Technology address: Azadi Ave. - Tehran, IRAN e-mail: amin@sharif.edu nic-hdl: SA39375-RIPE admin-c: HA4213-RIPE admin-c: MA22456-RIPE mnt-by: SHARIF-EDU-MNT created: 2019-01-28T04:14:51Z last-modified: 2019-02-25T15:35:44Z source: RIPE route: 81.31.160.0/20 descr: SHARIF-EDU-NET origin: AS12660 notify: amir@sharif.edu mnt-by: SHARIF-EDU-MNT created: 2003-01-28T11:14:09Z last-modified: 2003-01-28T11:14:09Z source: RIPE
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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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