AS24203 PT Excelcomindo Pratama (Network Access Provider)
2400:9800::/32 - XLNET-IDNIC-ID-20090212
inet6num: 2400:9800::/32 netname: XLNET-IDNIC-ID-20090212 descr: PT. XL Axiata Tbk descr: Cellular, GPRS and Internet Service Provider country: ID admin-c: DM131-AP tech-c: BDS6-AP remarks: Send Spam & Abuse Reports to: firstname.lastname@example.org, remarks: email@example.com status: ALLOCATED PORTABLE mnt-by: MNT-APJII-ID mnt-lower: MAINT-ID-XLNET mnt-routes: MAINT-ID-XLNET mnt-irt: IRT-XLNET-ID last-modified: 2018-10-31T07:35:48Z source: APNIC irt: IRT-XLNET-ID address: PT XL Axiata Tbk address: XL Axiata Tower address: Jl. H.R. Rasuna Said X5 Kav. 11 - 12 address: Kuningan Timur, Setiabudi, Jakarta Selatan 12950 e-mail: firstname.lastname@example.org abuse-mailbox: email@example.com admin-c: DM131-AP tech-c: BDS6-AP auth: # Filtered mnt-by: MAINT-ID-XLNET last-modified: 2018-10-31T07:04:11Z source: APNIC person: Dwi Mahindra nic-hdl: DM131-AP e-mail: firstname.lastname@example.org address: Jl. H.R. Rasuna Said X5 Kav. 11 - 12 address: Kuningan Timur, Setiabudi, address: Jakarta Selatan 12950 phone: +62-21-579-59415 fax-no: +62-21-579-59184 country: ID mnt-by: MAINT-ID-XLNET last-modified: 2018-10-31T07:05:27Z source: APNIC person: Beny Dwi Setyawan address: XL Axiata Tower address: Jl. H.R Rasuna Said X5 Kav.11-12 address: Kuningan Timur Setiabudi Jakarta Selatan 12950 country: ID phone: +62-21-5761881 e-mail: email@example.com nic-hdl: BDS6-AP mnt-by: MAINT-ID-XLNET last-modified: 2018-10-02T07:16:12Z source: APNIC
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.