218.203.32.0/24

inetnum:        218.203.0.0 - 218.203.95.255
netname:        CMNET-heilongjiang
descr:          China Mobile Communications Corporation - heilongjiang
country:        CN
admin-c:        HL349-AP
tech-c:         HL349-AP
mnt-by:         MAINT-CN-CMCC
mnt-lower:      MAINT-CN-CMCC-heilongjiang
remarks:        ------------------------------
remarks:        Please send abuse e-mail to
remarks:        lihonglei@hl.chinamobile.com
remarks:        Please send probe e-mail to
remarks:        lihonglei@hl.chinamobile.com
remarks:        -------------------------------
status:         ALLOCATED NON-PORTABLE
last-modified:  2008-09-04T06:59:25Z
source:         APNIC


person:         honglei li
nic-hdl:        HL349-AP
e-mail:         lihonglei@hl.chinamobile.com
address:        No. 70, WenChang Street, NangGang Dist., HarBin, China
phone:          +86-451 -82668013
fax-no:         +86-0451-82668059
country:        cn
mnt-by:         MAINT-CN-CMCC-HEILONGJIANG
last-modified:  2008-09-04T07:32:18Z
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.