212.87.232.0/23
AS15373 · Politechnika Czestochowska
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inetnum: 212.87.233.0 - 212.87.233.255 netname: PCZ-EDUROAM-PL descr: The Eduroam Network of Politechnika Czestochowska country: PL admin-c: WR1082-RIPE tech-c: CZ512-RIPE status: ASSIGNED PA mnt-by: PL-CZESTMAN-MNT mnt-lower: PL-CZESTMAN-MNT mnt-routes: PL-CZESTMAN-MNT created: 2011-11-28T13:21:26Z last-modified: 2011-11-28T13:21:26Z source: RIPE abuse-email: abuse@man.czest.pl abuse-c: CZ512-RIPE abuse-org: ORG-PC2-RIPE role: CzestMAN Operations address: Technical University of Czestochowa address: Metropolitan Area Network CzestMAN address: ul. Dabrowskiego 71, 42-200 Czestochowa address: POLAND phone: +48 34 3250317 e-mail: noc@man.czest.pl remarks: =================================================== remarks: in case of abuse (hacking, spam sending, intrusion, remarks: other unacceptet activities) please use only remarks: --- e-mail abuse@man.czest.pl --- remarks: =================================================== admin-c: WR1082-RIPE tech-c: LK470-RIPE tech-c: WR1082-RIPE tech-c: PD9048-RIPE nic-hdl: CZ512-RIPE mnt-by: PL-CZESTMAN-MNT created: 2006-03-22T17:50:55Z last-modified: 2017-04-12T14:14:52Z source: RIPE abuse-mailbox: abuse@man.czest.pl person: Wojciech Rozycki address: Technical University of Czestochowa address: Metropolitan Area Network CzestMAN address: 42-200 Czestochowa address: ul. Dabrowskiego 71 address: Poland phone: +48 34 3250317 e-mail: woj@man.pcz.pl nic-hdl: WR1082-RIPE notify: woj@man.pcz.pl mnt-by: PL-CZESTMAN-MNT created: 1970-01-01T00:00:00Z last-modified: 2023-10-27T12:24:22Z source: RIPE route: 212.87.232.0/23 descr: Networks of universities in Czestochowa descr: Czestochowa,POLAND origin: AS15373 remarks: operationa mnt-by: PL-CZESTMAN-MNT created: 2012-12-17T15:15:16Z last-modified: 2015-07-02T14:22:10Z source: RIPE
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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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