131.230.224.0/20

NetHandle:      NET-131-230-0-0-1
OrgID:          SIU
Parent:         NET-131-0-0-0-0
NetName:        SIU-NET
NetRange:       131.230.0.0 - 131.230.255.255
NetType:        assignment
RegDate:        1989-01-30
Updated:        2008-12-11
Source:         ARIN


OrgID:          SIU
OrgName:        Southern Illinois University
CanAllocate:    
Street:         IT-Network Engineering
City:           Carbondale
State/Prov:     IL
Country:        US
PostalCode:     62901
RegDate:        1989-01-30
Updated:        2016-04-01
OrgAbuseHandle: CASTE80-ARIN
OrgAbuseHandle: MSH199-ARIN
OrgAbuseHandle: WISEM25-ARIN
OrgAdminHandle: MSH199-ARIN
OrgTechHandle:  CASTE80-ARIN
OrgTechHandle:  MSH199-ARIN
OrgTechHandle:  WISEM25-ARIN
Source:         ARIN


POCHandle:      MSH199-ARIN
IsRole:         N
LastName:       Shelton
FirstName:      Michael
Street:         Southern Illinois University
Street:         Michael Shelton
Street:         625 Wham Drive Rm B18
Street:         Attn: Info Tech Dept.
City:           Carbondale
State/Prov:     IL
Country:        US
PostalCode:     62901
RegDate:        2008-12-05
Updated:        2020-10-27
OfficePhone:    +1-618-453-6219
Mailbox:        admin@siu.edu
Source:         ARIN


POCHandle:      CASTE80-ARIN
IsRole:         N
LastName:       Castelli
FirstName:      Anton
Street:         625 Wham Drive
City:           Carbondale
State/Prov:     IL
Country:        US
PostalCode:     62901
RegDate:        2016-04-01
Updated:        2021-04-06
OfficePhone:    +1-618-453-6424
Mailbox:        tech@siu.edu
Source:         ARIN


POCHandle:      WISEM25-ARIN
IsRole:         N
LastName:       Wiseman
FirstName:      Troy
Street:         625 Wham Drive
City:           Carbondale
State/Prov:     IL
Country:        US
PostalCode:     62901
RegDate:        2016-04-01
Updated:        2017-11-29
OfficePhone:    +1-618-453-6264
Mailbox:        tech@siu.edu
Source:         ARIN

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.