2001:fd0:101::/48

inet6num:       2001:fd0::/32
netname:        SHYAMSPECTRA-IN
descr:          Shyam Spectra Pvt Ltd
descr:          42, Okhla Industrial Estate
descr:          Phase III
country:        IN
admin-c:        IA108-AP
tech-c:         IA108-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-IN-IRINN
mnt-lower:      MAINT-IN-SPECTRA-NET-LTD
mnt-routes:     MAINT-IN-SPECTRA-NET-LTD
mnt-irt:        IRT-SHYAMSPECTRA-IN
last-modified:  2017-12-05T09:14:48Z
source:         APNIC


irt:            IRT-SHYAMSPECTRA-IN
address:        3rd Floor, Plot No. 21-22 Udyog Vihar Phase-IV Gurgaon (Haryana) PIN 122015
address:        Phase III
e-mail:         ipadmin@spectra.co
abuse-mailbox:  abuseinfo@spectra.co
admin-c:        IA108-AP
tech-c:         IA108-AP
auth:           # Filtered
mnt-by:         MAINT-IN-SPECTRA-NET-LTD
last-modified:  2017-12-05T05:46:41Z
source:         APNIC

person:         IP Admin
address:        3rd Floor, Plot No. 21-22 Udyog Vihar Phase-IV Gurgaon (Haryana) PIN 122015
country:        IN
phone:          +91-11-66064800
fax-no:         +91-11-66064805
e-mail:         ipadmin@spectra.co
nic-hdl:        IA108-AP
abuse-mailbox:  abuseinfo@spectra.co
mnt-by:         MAINT-IN-SPECTRANET
last-modified:  2017-11-17T07:20:02Z
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.