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Autonomous System

AS138543

Cablevision Systems Corporation

Announced IPs
512
CIDR prefixes
2
ASN
AS138543

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

70/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 10-20Gbps
Geographic scope Not Disclosed
Traffic ratio Not Disclosed
Peering policy Open
IRR record AS138543:AS-CABLEVISION

Present at 2 internet exchanges: PhOpenIX-Manila, BBIX Manila

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS138543 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
103.132.168.0/24 67,203 2026-08-04 01:12:43
103.148.60.0/24 39,228 2026-08-04 01:12:50

Frequently Asked Questions

What is AS138543?

AS138543 is an Autonomous System Number assigned to Cablevision Systems Corporation. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS138543 announce?

AS138543 announces 512 IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Philippines.

Who operates AS138543?

AS138543 is operated by Cablevision Systems Corporation. The organization is based in Philippines. You can view all IP ranges and related ASNs on the organization page.

What country is AS138543 registered in?

AS138543 is registered in Philippines. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-08-04 01:25:33 UTC
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