209.249.212.0/24

NetHandle:      NET-209-249-212-0-1
OrgID:          MT-15
Parent:         NET-209-249-0-0-1
NetName:        ZAYO-IPYX-151141-209-249-212-0-24
NetRange:       209.249.212.0 - 209.249.212.255
NetType:        reassignment
Comment:        abuse@zayo.com
RegDate:        2017-09-22
Updated:        2017-09-22
Source:         ARIN


OrgID:          MT-15
OrgName:        17-909-2028
CanAllocate:    
Street:         150 Allen Road
Street:         Suite 302
City:           Basking Ridge
State/Prov:     NJ
Country:        US
PostalCode:     07920
RegDate:        2011-05-13
Updated:        2011-09-24
OrgAbuseHandle: EJT-ARIN
OrgAdminHandle: EJT-ARIN
OrgTechHandle:  EJT-ARIN
Source:         ARIN


POCHandle:      EJT-ARIN
IsRole:         N
LastName:       Trendler
FirstName:      Eric
Street:         150 Allen Road
Street:         Suite 302
City:           Basking Ridge
State/Prov:     NJ
Country:        US
PostalCode:     07920
RegDate:        2011-04-12
Updated:        2012-04-11
OfficePhone:    +1-908-991-9200
Mailbox:        etrendler@mathesongas.com
Mailbox:        etrendler@matheson-trigas.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.