AS19720 Cablevision Systems Corp. 🇺🇸 US

Announcing 9 prefixes, seen at the RIS collectors.

IPv4 prefixes

2,304 (9 × /24)

IPv6 prefixes

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS19720
Name: Cablevision Systems Corp.
Organisation: Cablevision Systems Corp.
Country: 🇺🇸 US
RIR: ARIN
Allocated: 2001-02-07

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

5 valid (55.6%) 0 invalid (0.0%) 4 no ROA (44.4%)

Whois

Fetched from whois.arin.net

ASNumber:       19720
ASName:         CABLEVISION-CORP
ASHandle:       AS19720
RegDate:        2001-02-07
Updated:        2020-06-30
Ref:            https://rdap.arin.net/registry/autnum/19720

OrgName:        Cablevision Systems Corp.
OrgId:          CVNT
Address:        1111 Stewart Avenue
City:           Bethpage
StateProv:      NY
PostalCode:     11714
Country:        US
RegDate:
Updated:        2025-08-06
Ref:            https://rdap.arin.net/registry/entity/CVNT

OrgAbuseHandle: OOLAB-ARIN
OrgAbuseName:   OOL Hostmaster
OrgAbusePhone:  +1-516-803-2400
OrgAbuseEmail:  abuse@cv.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/OOLAB-ARIN

OrgTechHandle: CIO1-ARIN
OrgTechName:   Cablevision Internet Operations
OrgTechPhone:  +1-516-390-5480
OrgTechEmail:  hostmaster@alticeusa.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CIO1-ARIN