NetHandle: NET-161-185-0-0-1 OrgID: CNY Parent: NET-161-0-0-0-0 NetName: CITYNET-161-185 NetRange: 126.96.36.199 - 188.8.131.52 NetType: assignment OriginAS: 22252 RegDate: 1993-01-15 Updated: 2013-07-11 NOCHandle: CSD7-ARIN TechHandle: HECHT1-ARIN AbuseHandle: HECHT1-ARIN Source: ARIN OrgID: CNY OrgName: The City of New York CanAllocate: Street: DoITT Street: 2 Metrotech Center 2nd Fl City: Brooklyn State/Prov: NY Country: US PostalCode: 11201 RegDate: 1993-08-02 Updated: 2017-07-21 OrgAdminHandle: HELP8-ARIN OrgNOCHandle: CSD7-ARIN OrgTechHandle: HELP8-ARIN OrgAbuseHandle: HELP8-ARIN 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.