87.237.80.0/24
AS25627 · Business Telecommunications Services Inc
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inetnum: 87.237.80.0 - 87.237.81.255 netname: SBTS-TOKYO-INFRA country: JP admin-c: SONA1-RIPE tech-c: FMC47-RIPE status: ASSIGNED PA mnt-by: MNT-SONOC created: 2023-02-27T11:49:09Z last-modified: 2023-02-27T11:49:09Z source: RIPE descr: SBTS Tokyo network abuse-email: abuse@systemonenoc.com abuse-c: AR14998-RIPE abuse-org: ORG-SOWC1-RIPE role: System One NOC Administration address: c/Josefa Amar y Borbon, 10 address: 50001 - Zaragoza (España) phone: +34 917019888 fax-no: +34 974215696 e-mail: noc@systemonenoc.com e-mail: fmayo@systemonenoc.com org: ORG-SOWC1-RIPE admin-c: NSO10-RIPE tech-c: FMC47-RIPE nic-hdl: SONA1-RIPE notify: fmayo@systemonenoc.com abuse-mailbox: abuse@systemonenoc.com mnt-by: MNT-SONOC created: 2017-01-24T15:11:18Z last-modified: 2017-01-24T15:17:54Z source: RIPE person: Fernando Mayo Canuria address: System One NOC address: c/ Josefa Amar y Borbón, 10. Planta 4 address: 50001 - Zaragoza (ESPAÑA) phone: +34 917019888 fax-no: +34 974215696 e-mail: fmayo@sonoc.io nic-hdl: FMC47-RIPE notify: fmayo@sonoc.io created: 2001-09-25T17:06:28Z last-modified: 2023-03-03T13:09:07Z source: RIPE mnt-by: MNT-SONOC route: 87.237.80.0/22 origin: AS25627 mnt-by: MNT-SONOC created: 2010-01-19T10:36:28Z last-modified: 2023-03-03T13:26:42Z 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.
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