212.128.64.0/20
AS766 · Entidad Publica Empresarial Red.es
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inetnum: 212.128.64.0 - 212.128.76.255 netname: UAH descr: Universidad de Alcala de Henares descr: Alcala de Henares country: ES admin-c: MPS205-RIPE tech-c: MPS205-RIPE abuse-c: RIAC2-RIPE status: ASSIGNED PA mnt-irt: IRT-IRIS remarks: mail spam reports: iris@certsi.es remarks: security incidents: iris@certsi.es notify: iris-nic@rediris.es mnt-by: REDIRIS-NMC created: 2004-04-19T11:15:28Z last-modified: 2023-02-20T08:50:56Z source: RIPE abuse-email: iris@certsi.es abuse-c: RIAC2-RIPE abuse-org: ORG-RA6-RIPE person: Manuel Perez Santander address: Universidad de Alcala de Henares address: Servicio de comunicaciones address: Campus Universitario address: E-28871 Alcala de Henares, Madrid address: SPAIN phone: +34 918854706 e-mail: comunicaciones@uah.es nic-hdl: MPS205-RIPE notify: iris-nic@rediris.es mnt-by: REDIRIS-NMC created: 2023-02-20T08:49:39Z last-modified: 2023-02-20T08:49:39Z source: RIPE route: 212.128.64.0/19 descr: RedIRIS Provider Block origin: AS766 notify: iris-nic@rediris.es mnt-by: REDIRIS-NMC created: 2015-09-14T08:57:10Z last-modified: 2015-09-14T08:57:10Z 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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