104.121.176.0/20

NetHandle:      NET-104-121-176-0-1
OrgID:          AIB-17
Parent:         NET-104-64-0-0-1
NetName:        AIBV
NetRange:       104.121.176.0 - 104.121.191.255
NetType:        reassignment
RegDate:        2018-03-30
Updated:        2018-03-30
Source:         ARIN


OrgID:          AIB-17
OrgName:        Akamai International, BV
CanAllocate:    
Street:         Prins Bernhardplein 200
City:           Amsterdam
State/Prov:     
Country:        NL
PostalCode:     1097 JB
RegDate:        2013-09-19
Updated:        2016-12-14
OrgAbuseHandle: NUS-ARIN
OrgAdminHandle: AIBVH-ARIN
OrgTechHandle:  AIBVH-ARIN
Source:         ARIN


POCHandle:      AIBVH-ARIN
IsRole:         Y
LastName:       AIBV Hostmaster
FirstName:      
Street:         Prins Bernhardplein 200
City:           Amsterdam
State/Prov:     
Country:        NL
PostalCode:     1097 JB
RegDate:        2013-09-19
Updated:        2020-12-14
OfficePhone:    +1.617.444.4699
Mailbox:        ip-admin@akamai.com
Source:         ARIN


POCHandle:      NUS-ARIN
IsRole:         Y
LastName:       NOC United States
FirstName:      
Street:         8 Cambridge Center
Street:         Mailstop 926-G
City:           Cambridge
State/Prov:     MA
Country:        US
PostalCode:     02142
RegDate:        2002-11-18
Updated:        2017-03-07
OfficePhone:    +1-617-444-2535
Mailbox:        abuse@akamai.com
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.