AS22703 Anthem Blue Cross Blue Shield
22.214.171.124/21 - CMICBCBS
NetHandle: NET-162-95-0-0-1 OrgID: WELLP-8 Parent: NET-162-0-0-0-0 NetName: CMICBCBS NetRange: 126.96.36.199 - 188.8.131.52 NetType: assignment RegDate: 1992-09-25 Updated: 2012-03-02 Source: ARIN OrgID: WELLP-8 OrgName: Anthem Blue Cross Blue Shield CanAllocate: Street: 120 Monument Circle City: Indianapolis State/Prov: IN Country: US PostalCode: 46204 RegDate: 2010-02-26 Updated: 2010-02-26 OrgTechHandle: HOSTM1540-ARIN OrgNOCHandle: HOSTM1540-ARIN OrgAdminHandle: HOSTM1540-ARIN OrgAbuseHandle: HOSTM1540-ARIN Source: ARIN POCHandle: HOSTM1540-ARIN IsRole: Y LastName: Hostmaster FirstName: Street: 120 Monument Circle City: Indianapolis State/Prov: IN Country: US PostalCode: 46204 RegDate: 2010-02-11 Updated: 2018-11-15 OfficePhone: +1-317-532-6000 Mailbox: email@example.com Source: ARIN
IP address subranges within this IP range
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.