202.47.74.0/24

inetnum:        202.47.64.0 - 202.47.79.255
netname:        JETCOMSNET-ID
descr:          PT. JETCOMS NETINDO
descr:          Jakarta, Indonesia
country:        ID
admin-c:        JR32-AP
tech-c:         AG20-AP
mnt-by:         MNT-APJII-ID
mnt-lower:      MAINT-ID-JETCOMS
mnt-irt:        IRT-JETCOMS-ID
status:         ALLOCATED PORTABLE
remarks:        spam and abuse report : abuse@apjii.or.id
last-modified:  2011-02-09T03:02:08Z
source:         APNIC


irt:            IRT-JETCOMS-ID
address:        Graha Jetcoms
address:        Jl. Raya Kedoya No.7
address:        Kedoya Selatan - Kebon Jeruk
address:        Jakarta Barat 11520
e-mail:         hostmaster@jetcoms.net.id
abuse-mailbox:  abuse@jetcoms.net.id
admin-c:        JH446-AP
tech-c:         JH446-AP
auth:           # Filtered
mnt-by:         MAINT-ID-JETCOMS
last-modified:  2018-05-31T22:29:07Z
source:         APNIC

person:         Alex Gregorius
address:        PT. JETCOMS NETINDO
address:        Sastra Graha, Penthouse Suite
address:        Jl. Raya Perjuangan No.21
address:        Kebon Jeruk, Jakarta Barat 11530
country:        ID
phone:          +62-21-5358848
fax-no:         +62-21-5358845
e-mail:         alex@jetcoms.net
nic-hdl:        AG20-AP
mnt-by:         MAINT-ID-JETCOMSNET
last-modified:  2008-09-04T07:29:55Z
source:         APNIC

person:         James R. Isman
address:        JETCOMSNET
address:        PT. JETCOMS NETINDO
address:        Wisma Iskandarsyah B1 C-8
address:        Jl. Sultan Iskandarsyah Kav 12-14
address:        Jakarta 12160
country:        ID
phone:          +62-21-7254168
fax-no:         +62-21-7268285
e-mail:         jri@jetcoms.net
nic-hdl:        JR32-AP
mnt-by:         MAINT-NEW
last-modified:  2008-09-04T07:29:55Z
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.