Protect Your Privacy
A Virtual Private Network (VPN) is an essential tool for protecting your privacy and ensuring your security while online. Read our VPN Guide to find out more.
V6NetHandle: NET6-2001-550-1 OrgID: COGC Parent: NET6-2001-400-0 NetName: COGC-6NET-0001 NetRange: 2001:550:: - 2001:550:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 174 RegDate: 2002-12-17 Updated: 2012-03-02 TechHandle: ZC108-ARIN Source: ARIN OrgID: COGC OrgName: Cogent Communications CanAllocate: Street: 2450 N Street NW City: Washington State/Prov: DC Country: US PostalCode: 20037 RegDate: 2000-05-30 Updated: 2017-08-17 ReferralServer: rwhois://rwhois.cogentco.com:4321 OrgAdminHandle: IPALL-ARIN OrgTechHandle: IPALL-ARIN OrgAbuseHandle: COGEN-ARIN OrgNOCHandle: ZC108-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.