AS701 MCI Communications Services, Inc. d/b/a Verizon Business
2604:5200:1001::/48 - ITV6-2604-5200-1001-1
V6NetHandle: NET6-2604-5200-1001-1 OrgID: AS-4 Parent: NET6-2604-5200-1 NetName: ITV6-2604-5200-1001-1 NetRange: 2604:5200:1001:: - 2604:5200:1001:FFFF:FFFF:FFFF:FFFF:FFFF NetType: reallocation OriginAS: 32504 RegDate: 2011-03-18 Updated: 2011-03-18 Source: ARIN OrgID: AS-4 OrgName: Atypon Systems, Inc. CanAllocate: Street: 5201 Great America Pkwy Street: STE 215 City: Santa Clara State/Prov: CA Country: US PostalCode: 95054 Comment: http://www.atypon.com RegDate: 2011-02-11 Updated: 2018-10-16 OrgTechHandle: KARAN2-ARIN OrgAdminHandle: KARAN2-ARIN OrgAbuseHandle: KARAN2-ARIN Source: ARIN POCHandle: KARAN2-ARIN IsRole: N LastName: Karantzas FirstName: Constantinos Street: 5201 Great America Pkwy Street: STE 215 City: Santa Clara State/Prov: CA Country: US PostalCode: 95054 RegDate: 2011-02-10 Updated: 2018-10-16 FaxPhone: +1-408-988-1070 OfficePhone: +1-408-988-1240 Mailbox: email@example.com Mailbox: firstname.lastname@example.org 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.