AS19720 Cablevision Systems Corp. - NETBLK-OOL-11BLK




Optimum Online


AS19720 Cablevision Systems Corp.


United States



Whois Details

NetHandle:      NET-47-20-0-0-1
OrgID:          OPTO
Parent:         NET-47-0-0-0-0
NetName:        NETBLK-OOL-11BLK
NetRange: -
NetType:        allocation
OriginAS:       6128
RegDate:        2012-02-29
Updated:        2012-02-29
Source:         ARIN

OrgID:          OPTO
OrgName:        Optimum Online
Street:         111 new south RD
City:           Hicksville
State/Prov:     NY
Country:        US
PostalCode:     11801
RegDate:        1999-07-29
Updated:        2011-12-20
OrgTechHandle:  OH4-ORG-ARIN
OrgAdminHandle: OH4-ORG-ARIN
OrgAbuseHandle: OOLAB-ARIN
Source:         ARIN

IP Addresses in this range


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.

Try our JSON API from the command line

Get started with curl ipinfo.io or check out the documentation to read more.

Free for small projects. Pay as you grow.

Our API is free for up to 1,000 requests per day. Our plans suits the company of every size.

Plans & Pricing
A million uses. Easy to implement.

From filtering out bot traffic, to performing bulk IP geolocation, we’ve got it all covered.