117.23.48.0/20

inetnum:        117.22.0.0 - 117.23.255.255
netname:        CHINANET-SN
descr:          CHINANET Shanxi(SN) province network
descr:          China Telecom
descr:          A12,Xin-Jie-Kou-Wai Street
descr:          Beijing 100088
country:        CN
admin-c:        CH93-AP
tech-c:         XC9-AP
mnt-by:         APNIC-HM
mnt-routes:     MAINT-CHINANET-SHAANXI
mnt-lower:      MAINT-CHINANET-SHAANXI
status:         ALLOCATED PORTABLE
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:        --------------------------------------------------------
last-modified:  2016-05-04T00:08:51Z
source:         APNIC
mnt-irt:        IRT-CHINANET-CN


person:         Chinanet Hostmaster
nic-hdl:        CH93-AP
e-mail:         anti-spam@ns.chinanet.cn.net
address:        No.31 ,jingrong street,beijing
address:        100032
phone:          +86-10-58501724
fax-no:         +86-10-58501724
country:        CN
changed:        dingsy@cndata.com 20070416
changed:        zhengzm@gsta.com 20140227
mnt-by:         MAINT-CHINANET
source:         APNIC

person:         Xianghong Cao
address:        Shanxi provice data communication Bureau
address:        185# zhuque Road
address:        Xi'an city, Shanxi provice 710061
country:        CN
phone:          +8629-523-3633
fax-no:         +8629-522-8093
e-mail:         sxic@public.xa.sn.cn
nic-hdl:        XC9-AP
mnt-by:         MAINT-CHINANET
changed:        caoxianghong@263.net 19990409
changed:        hm-changed@apnic.net 20170317
source:         APNIC

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
last-modified:  2010-11-15T00:31:55Z
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.