AS19720 CABLEVISION-CORP - Cablevision Systems Corp.

🇺🇸

ARINassigned

Announced Prefixes (BGP)

9total

9 IPv40 IPv6

IPv4 Addresses

Allocated (RIR)172,032

Announced (BGP)2,304

IPv6 Addresses

Allocated (RIR)7.9×10²⁸

Announced (BGP)0

Prefix Limit (IPv4)

200

Prefix Limit (IPv6)

Country

RIR

Status

assigned

Allocated

2001-02-07

Announced Prefixes

(BGP)9

Prefix	RPKI	IRR	Last Seen
65.51.29.0/24	Valid	-	2026-10-10
65.51.31.0/24	Valid	-	2026-10-10
167.206.119.0/24	No ROA	-	2026-10-10
167.206.120.0/24	No ROA	-	2026-10-10
167.206.122.0/24	No ROA	-	2026-10-10
167.206.123.0/24	No ROA	-	2026-10-10
216.2.193.0/24	Valid	ARIN	2026-10-10
216.2.194.0/24	Valid	ARIN	2026-10-10
216.2.195.0/24	Valid	ARIN	2026-10-10

(RIR)5

Prefix	Country	RIR	Status
65.51.0.0/16	🇺🇸 US	ARIN	allocated
69.74.0.0/16	🇺🇸 US	ARIN	allocated
173.251.0.0/17	🇺🇸 US	ARIN	allocated
216.255.96.0/19	🇺🇸 US	ARIN	allocated
2602:230::/32	🇺🇸 US	ARIN	allocated

(seen in AS paths)

Networks AS19720 hands its own prefixes to: transit providers, or peers at an exchange.

ASPA

No ASPA

External Links

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS19720 should publish an ASPA object
IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/19720" | jq