AS133014 Universiti Teknologi Malaysia
2001:df0:41f::/48 - UTM-20121019
inet6num: 2001:df0:41f::/48 netname: UTM-20121019 descr: UTM country: MY admin-c: UTMA1-AP tech-c: UTMA1-AP mnt-routes: MAINT-UTM-MY mnt-irt: IRT-UTM-MY mnt-by: APNIC-HM status: ASSIGNED PORTABLE remarks: -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+ remarks: This object can only be updated by APNIC hostmasters. remarks: To update this object, please contact APNIC remarks: hostmasters and include your organization's account remarks: name in the subject line. remarks: -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+ last-modified: 2012-10-19T03:01:44Z source: APNIC irt: IRT-UTM-MY address: Center for ICT, Universiti Teknologi Malaysia,, 81310, Skudai, Johor Bahru,, Johor Bahru Johor 81310 e-mail: firstname.lastname@example.org abuse-mailbox: email@example.com admin-c: UTMA1-AP tech-c: UTMA1-AP auth: # Filtered remarks: firstname.lastname@example.org is invalid mnt-by: MAINT-UTM-MY last-modified: 2019-11-13T13:22:58Z source: APNIC role: Universiti Teknologi Malaysia administrator address: Center for ICT, Universiti Teknologi Malaysia,, 81310, Skudai, Johor Bahru,, Johor Bahru Johor 81310 country: MY phone: +607 5532470 fax-no: +607 5532470 e-mail: email@example.com admin-c: UTMA1-AP tech-c: UTMA1-AP nic-hdl: UTMA1-AP mnt-by: MAINT-UTM-MY last-modified: 2012-10-19T03:01:34Z 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.