81.12.12.0/24
AS6736 · Institute for Research in Fundamental Sciences
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inetnum: 81.12.12.0 - 81.12.13.255 netname: SIPM-SHARIATI descr: Tehran - Shariati POP country: IR admin-c: SAMH3-RIPE tech-c: SAMH3-RIPE status: ASSIGNED PA mnt-by: SINET-MNT created: 2004-08-30T13:14:22Z last-modified: 2020-08-24T08:32:46Z source: RIPE abuse-email: ripencc@sinet.ir abuse-c: AR13606-RIPE abuse-org: ORG-SAVC1-RIPE person: Amir Ziaei e-mail: cto@sinet.ir address: 1 East 5th Alley North Seoul St. Tehran Iran address: 4 Firooze Dead end Dr. Shariati St. Tehran Iran phone: +982184371111 phone: +982122618700 nic-hdl: SAMH3-RIPE mnt-by: SINET-MNT created: 2018-01-10T13:10:25Z last-modified: 2022-10-13T06:07:45Z source: RIPE route: 81.12.12.0/22 origin: AS21341 mnt-by: SINET-MNT created: 2019-05-28T14:56:53Z last-modified: 2019-05-28T14:56:53Z 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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