AS16406 Intermedia.net, Inc.
2605:400:2::/48 - INTRMD-V6
V6NetHandle: NET6-2605-400-1 OrgID: IMED Parent: NET6-2600-1 NetName: INTRMD-V6 NetRange: 2605:400:: - 2605:400:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 16406 RegDate: 2010-07-20 Updated: 2012-02-24 TechHandle: MK564-ARIN NOCHandle: NETWO262-ARIN AbuseHandle: ABUSE305-ARIN Source: ARIN OrgID: IMED OrgName: Intermedia.net, Inc. CanAllocate: Street: 825 E Middlefield Rd City: Mountain View State/Prov: CA Country: US PostalCode: 94043 RegDate: 1997-11-25 Updated: 2017-01-20 OrgTechHandle: MK564-ARIN OrgNOCHandle: NETWO262-ARIN OrgAdminHandle: ADMIN180-ARIN OrgAbuseHandle: ABUSE305-ARIN Source: ARIN
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.