91.221.51.0/24
AS199718 · G4S Security Services A/S
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inetnum: 91.221.50.0 - 91.221.51.255 netname: G4S-net country: DK org: ORG-GSSA4-RIPE admin-c: AS5071-RIPE tech-c: AS5071-RIPE status: ASSIGNED PI mnt-by: RIPE-NCC-END-MNT mnt-lower: RIPE-NCC-END-MNT mnt-by: AS3292-MNT mnt-routes: AS3292-MNT mnt-domains: AS3292-MNT created: 2010-10-26T10:13:57Z last-modified: 2016-04-14T11:12:25Z source: RIPE sponsoring-org: ORG-TD1-RIPE abuse-email: abuse@nianet.dk abuse-c: AR22687-RIPE abuse-org: ORG-TD1-RIPE organisation: ORG-GSSA4-RIPE org-name: G4S Security Services A/S country: DK org-type: OTHER address: Roskildevej 157, DK-2620 Albertslund, Denmark e-mail: Soren.Baagoe@dk.g4s.com abuse-c: AR22687-RIPE mnt-ref: nia-mnt mnt-by: nia-mnt mnt-by: AS3292-MNT created: 2010-10-21T13:59:24Z last-modified: 2022-12-01T16:28:06Z source: RIPE role: AS3292 Staff address: TDC A/S address: Sletvej 30, 8-062 address: DK-8310 Tranbjerg address: Denmark e-mail: staff@eng.tdc.net remarks: contact info: http://as3292.peeringdb.com admin-c: NCB1-RIPE admin-c: MBP137-RIPE tech-c: NCB1-RIPE tech-c: CP11490-RIPE tech-c: MBP137-RIPE notify: staff@eng.tdc.net nic-hdl: AS5071-RIPE mnt-by: AS3292-MNT created: 2002-07-02T13:36:00Z last-modified: 2024-05-21T09:07:14Z source: RIPE route: 91.221.50.0/23 descr: G4S origin: AS199718 mnt-by: TDK-MNT created: 2022-04-11T08:47:39Z last-modified: 2022-04-11T08:47:39Z 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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