110.167.123.0/24

inetnum:        110.166.0.0 - 110.167.255.255
netname:        CHINANET-QH
descr:          CHINANET Qinghai Province Network
descr:          Data Communication Division
descr:          China Telecom
country:        CN
admin-c:        GF298-AP
tech-c:         GF298-AP
status:         ALLOCATED PORTABLE
remarks:        service provider
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CHINANET-QH
last-modified:  2016-05-04T00:17:38Z
source:         APNIC
mnt-irt:        IRT-CHINANET-CN


irt:            IRT-CHINANET-CN
address:        No.31 ,jingrong street,beijing
address:        100032
e-mail:         anti-spam@ns.chinanet.cn.net
abuse-mailbox:  anti-spam@ns.chinanet.cn.net
admin-c:        CH93-AP
tech-c:         CH93-AP
auth:           # Filtered
mnt-by:         MAINT-CHINANET
changed:        anti-spam@ns.chinanet.cn.net 20101115
source:         APNIC

person:         Gui Fang
nic-hdl:        GF298-AP
e-mail:         changgf@public.xn.qh.cn
address:        shengli   street , xining
phone:          +86-971-8130334
fax-no:         +86-971-8230100
country:        CN
mnt-by:         MAINT-CHINANET-QH
last-modified:  2008-09-04T07:48:38Z
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.