AS6128 Cablevision Systems Corp.

CABLE-NET-1 - Cablevision Systems Corp. · registered in the United States

IPv4 addresses4,867,584919 prefixes · 0.155% of announced IPv4

Rank in United States#32largest network in US by IPv4 space, of 18,338 · 0.36% of US

Rank worldwide#98of 79,396 networks with IPv4

IPv617 x /32 (1,114,112 x /48)2 prefixes

CountryUnited States18,679 ASNs registered there

Open AS6128 in ASN lookup Look up an IP in this network (24.38.0.1) All networks in United States

IPv4 prefixes

First 500 of 919 prefixes, in address order.

24.38.0.0/22
24.38.5.0/24
24.38.6.0/23
24.38.8.0/23
24.38.11.0/24
24.38.12.0/22
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24.38.192.0/18
24.44.0.0/19
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24.189.0.0/21
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24.228.0.0/18
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47.16.0.0/21
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47.18.0.0/18
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50.29.0.0/17
63.142.20.0/24
63.247.160.0/20
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64.15.0.0/20
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68.192.0.0/18
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69.27.224.0/22
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69.112.0.0/18
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69.114.160.0/20

IPv6 prefixes

All 2 prefixes.

2600:4800::/28
2602:230::/32

Other ASNs named Cablevision Systems Corp.

1 other network uses the same organisation name; together with AS6128 they announce 4,869,888 IPv4 addresses.

ASNNameIPv4 addresses

AS19720CABLEVISION-CORP - Cablevision Systems Corp. US2,304

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IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources