V6NetHandle: NET6-2607-CD00-1 OrgID: BCC-141 Parent: NET6-2600-1 NetName: BEK-IPV6 NetRange: 2607:CD00:: - 2607:CD00:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 26794, 11232, 11138 RegDate: 2012-07-09 Updated: 2014-09-24 TechHandle: MALSA-ARIN AbuseHandle: ABUSE4772-ARIN NOCHandle: NETWO7036-ARIN Source: ARIN OrgID: BCC-141 OrgName: BEK Communications Cooperative CanAllocate: Street: 200 E Broadway Street: PO Box 230 City: Steele State/Prov: ND Country: US PostalCode: 58482 Comment: http://www.bektel.com/ Comment: Standard NOC hours are Monday thru Friday, 8am to 5pm CDT RegDate: 2005-11-22 Updated: 2017-01-28 ReferralServer: rwhois://rwhois.bektel.com:4321 OrgTechHandle: MALSA-ARIN OrgAdminHandle: MALSA-ARIN OrgAbuseHandle: ABUSE4772-ARIN OrgNOCHandle: NETWO7036-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.