AS23148 MCI Communications Services, Inc. d/b/a Verizon Business
2607:fd28:a000::/48 - SCA-SEN-IRN
V6NetHandle: NET6-2607-FD28-1 OrgID: SPT-90 Parent: NET6-2600-1 NetName: SCA-SEN-IRN NetRange: 2607:FD28:: - 2607:FD28:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 3725 RegDate: 2009-09-15 Updated: 2018-03-28 Source: ARIN OrgID: SPT-90 OrgName: Sony Pictures Technologies Inc. CanAllocate: Street: 10202 W. WASHINGTON BLVD. City: Culver City State/Prov: CA Country: US PostalCode: 90232 RegDate: 2018-04-27 Updated: 2018-07-31 OrgTechHandle: IISNO-ARIN OrgNOCHandle: IA77-ARIN OrgAdminHandle: IISNO-ARIN OrgAbuseHandle: IA77-ARIN Source: ARIN POCHandle: IISNO-ARIN IsRole: Y LastName: IIS Notify FirstName: Street: 555 Madison Avenue City: New York State/Prov: NY Country: US PostalCode: 10022 RegDate: 2009-07-15 Updated: 2019-01-24 OfficePhone: +1-212-833-6663 Mailbox: firstname.lastname@example.org Source: ARIN POCHandle: IA77-ARIN IsRole: Y LastName: IP Admin FirstName: Street: 600 Corporate Pointe WS8114 City: Culver City State/Prov: CA Country: US PostalCode: 90230 RegDate: 2001-02-20 Updated: 2019-01-24 OfficePhone: +1-201-930-6611 OfficePhone: +1-310-665-6225 Mailbox: email@example.com Mailbox: firstname.lastname@example.org Mailbox: email@example.com Mailbox: Sam_Hessels2@spe.sony.com 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.