83.212.160.0/21
AS8253 · Democritus University of Thrace
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inetnum: 83.212.128.0 - 83.212.167.255 netname: DUTHNET descr: Democritus University of Thrace country: GR admin-c: DN3905-RIPE tech-c: DN3905-RIPE abuse-c: DN3905-RIPE status: ASSIGNED PA mnt-by: GRNET-NOC mnt-domains: MNT-GRNET-DNS mnt-routes: AS8253-MNT created: 2010-02-12T13:18:31Z last-modified: 2018-01-12T09:40:26Z source: RIPE abuse-email: noc@duth.gr abuse-c: DN3905-RIPE abuse-org: ORG-GRaT1-RIPE role: DUTHnet NOC address: Democritus University of Thrace address: Computer Centre - Network Administration Centre address: Xanthi, GR67100 address: Greece e-mail: noc@duth.gr phone: +30 25410 79200 fax-no: +30 25410 79250 remarks: -------------------------------------- remarks: For complains about abuse, spam etc: abuse-mailbox: noc@duth.gr remarks: -------------------------------------- mnt-by: GRNET-NOC nic-hdl: DN3905-RIPE created: 2018-01-11T10:15:40Z last-modified: 2018-01-11T10:15:40Z source: RIPE route: 83.212.0.0/16 descr: Greek Research & Technology Network (GRNET) origin: AS5408 mnt-by: GRNET-NOC mnt-routes: GRNET-NOC created: 2005-06-30T12:00:41Z last-modified: 2016-01-19T08:57:41Z 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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