151.251.103.0/24
AS29580 · A1 Bulgaria EAD
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inetnum: 151.251.103.0 - 151.251.103.255 netname: A1_SFI_Resid country: BG admin-c: BFP359-RIPE tech-c: BFP359-RIPE status: ASSIGNED PA mnt-by: SPNET-MNT mnt-by: AS13124-MNT mnt-by: HOMELAN-MNT created: 2022-07-27T06:34:25Z last-modified: 2022-07-27T06:34:25Z source: RIPE abuse-email: RIPE.Abuse@a1.bg abuse-c: AR14215-RIPE abuse-org: ORG-MN1-RIPE role: A1 Bulgaria EAD NOC remarks: NOC: noc@a1.bg remarks: PeeringDB: https://www.peeringdb.com/net/1427 address: 1 Kukush Str. 1309 address: Sofia address: Bulgaria phone: +359884900098 e-mail: noc@a1.bg abuse-mailbox: RIPE.Abuse@a1.bg org: ORG-MN1-RIPE admin-c: GL12267-RIPE tech-c: GL12267-RIPE nic-hdl: BFP359-RIPE mnt-by: AS12716-MNT mnt-by: SPNET-MNT created: 2013-03-22T11:52:40Z last-modified: 2022-08-24T13:08:03Z source: RIPE route: 151.251.103.0/24 descr: A1_SFI_Resid origin: AS29580 mnt-by: SPNET-MNT mnt-by: AS13124-MNT mnt-by: HOMELAN-MNT created: 2022-07-27T06:35:17Z last-modified: 2022-07-27T06:35:17Z 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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