200.81.169.0/24

inetnum:     200.81.160/20
status:      allocated
aut-num:     N/A
owner:       SION S.A
ownerid:     AR-SISA8-LACNIC
responsible: Fernando Oliva
address:     AV. Cabildo, 2677, Piso 7
address:     1428 - Capital Federal - BA
country:     AR
phone:       +54 11 41102525 []
owner-c:     FEO
tech-c:      FEO
abuse-c:     FEO
inetrev:     200.81.160/20
nserver:     NS1.SION.COM  
nsstat:      20161112 AA
nslastaa:    20161112
nserver:     NS2.SION.COM  
nsstat:      20161112 AA
nslastaa:    20161112
created:     20040823
changed:     20040823

nic-hdl:     FEO
person:      Fernando Oliva
e-mail:      foliva@SION.COM
address:     Cabildo, 2677, Piso 7
address:     1428 - Buenos Aires - 
country:     AR
phone:       +54 11 39602580 []
created:     20020925
changed:     20140220

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.