AS6128 Cablevision Systems Corp.

AS6128Cablevision Systems Corp.ISP

WHOIS Topology

United States · ARINoptimum.com

Hosts top sitesHome broadbandTor relays

IPv4 addresses

5,057,792

81 announced prefixes

IPv6 addresses

1.34 × 10³⁰

10 announced prefixes

BGP neighbours

…

CAIDA rank

#161

Customer cone 340 ASNs

Estimated users

3.09M

APNIC: 3.08M

RPKI

79% valid

0 invalid · 19 not covered

Average purity

678 sampled IPs

IXPs / facilities

4 / 5

Operator self-reported

History

How prefixes were announced and changed hands, registration changes, and outage or hijack incidents.

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IP ranges

Currently announced prefixes with their RIR registration and geolocation.

Prefix	RPKI	Registration	Geolocation	Addresses
67.80.0.0/13	Valid	—	Holtsville	524,288
68.192.0.0/13	Valid	—	North Brunswick	524,288
69.112.0.0/13	Valid	—	Monroe	524,288
69.120.0.0/13	Valid	—	East Northport	524,288
24.44.0.0/14	Valid	—	Old Bridge	262,144
24.184.0.0/14	Valid	—	Fairfield	262,144
24.188.0.0/14	Valid	—	Deer Park	262,144
47.16.0.0/14	Not found	—	The Bronx	262,144
47.20.0.0/14	Valid	—	Yonkers	262,144
67.80.0.0/14	Valid	—	Holtsville	262,144
67.84.0.0/14	Valid	—	The Bronx	262,144
68.192.0.0/14	Valid	—	North Brunswick	262,144
68.196.0.0/14	Valid	—	Lindenhurst	262,144
69.112.0.0/14	Valid	—	Monroe	262,144
69.116.0.0/14	Valid	—	Brooklyn	262,144
69.120.0.0/14	Valid	—	East Northport	262,144
69.124.0.0/14	Valid	—	Brooklyn	262,144
47.16.0.0/15	Valid	—	The Bronx	131,072
74.88.0.0/15	Valid	—	Bridgeport	131,072
96.56.0.0/15	Valid	—	Deer Park	131,072

/24 block profile

One square per /24: colour shows the risk type, shade how many addresses are flagged, stripes mark datacenter blocks. Click a square to see all 256 addresses.

/24s with data 780 / 19,757 （4%） · flagged 209

No risk flagsDatacenter (no flags)ProxyVPNAbuse / blocklistTorDarker = more flagged addresses; dashed = block screen only

69.112.0.0/13109/2048 with data · 30 flagged

68.192.0.0/13105/2048 with data · 28 flagged

67.80.0.0/13100/2048 with data · 22 flagged

69.120.0.0/1379/2048 with data · 28 flagged

24.44.0.0/1467/1024 with data · 18 flagged

24.188.0.0/1462/1024 with data · 19 flagged

47.16.0.0/1447/1024 with data · 10 flagged

24.184.0.0/1443/1024 with data · 11 flagged

74.88.0.0/1524/512 with data · 5 flagged

24.228.0.0/1621/256 with data · 3 flagged

148.74.0.0/1519/512 with data · 3 flagged

47.20.0.0/1414/1024 with data · 5 flagged

Hover a square for its numbers; click to see all 256 addresses.

Each prefix shows its 64 /24s with the most data. Built daily from lookups, neighbour sampling, public lists and block screening.

IP reputation

IPs from this network that CleanIP has analysed: purity, abuse reports and the riskiest /24 blocks.

Purity distribution

85–100 33270–84 24650–69 970–49 3

0.04%

Share of IPv4 reported or blocklisted

1,890

Listed IPs

678

Analysed IPs

Riskiest /24 blocks

/24 block	Flagged	Analysed
104.148.171.0/24	1	1
24.190.7.0/24	1	1
47.20.139.0/24	1	1
67.82.17.0/24	1	1
67.82.18.0/24	1	1
67.83.147.0/24	1	1
68.194.123.0/24	1	1
69.115.78.0/24	1	1
69.116.243.0/24	1	1
69.117.142.0/24	1	1

Flagged = VPN, proxy, Tor or purity below 50. Samples come from user lookups and neighbour sampling, not every address in this network.

Geography

Where this network’s IPv4 addresses are located.

United States99.6%
Canada0.3%
Australia0.1%

Scope: Single country
In registered country: 99.6%

Estimated by sampling IPv4 ranges against a geolocation database.

Traffic observation

AS6128 · Last 7 days

Mobile vs. Desktop

Desktop55.8%Mobile44.2%

Bot vs. Human

Human83.3%Bot16.7%

Adoption & Usage

Adoption and usage of key protocols

Internet Protocol (IP) Version

IPv479.3%IPv620.7%

HTTP Version

HTTP/1.x

12.4%HTTP/2

60.1%HTTP/3

27.6%

HTTP vs. HTTPS

98.7% HTTPS (encrypted)

Plain HTTP 1.3%

TLS Version

TLS 1.0/1.1< 0.1%TLS 1.24.7%TLS 1.367.3%QUIC27.9%

Security & Attacks

Insights into network and application layer attack traffic

Layer 7 Attacks

GET

76.3%POST

20.0%HEAD

1.9%OPTIONS

1.4%PATCH

0.3%Other

< 0.1%

BGP Announcements

Hourly BGP route announcements over the last 7 days

339,044

7-day total

14,244

Hourly peak

Data: Cloudflare Radar, licensed under CC BY-NC 4.0

Activity

Hourly traffic over the last 7 days, normalized to this network’s peak.

A pronounced day/night rhythm, typical of networks with human users.

	00						06						12						18
Mon
Tue
Wed
Thu
Fri
Sat
Sun

Times in UTCLessMore

Peak hour: 01:00–02:00
Active hours: 18 hrs
Weekend vs weekday: Weekdays ≈ weekends
Busiest day: Fri

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BGP upstreams and neighbours

AS6128Standalone page

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WHOIS record

The registry’s record for this AS number: holder, status, dates and contacts.

Sources

Where the information on this page comes from and when it was updated.

Information	Source	Updated
Registered country	RIR daily delegation statistics	2026-10-22
Registered address & allocation date	RIR registration data (RDAP)	2026-10-03
Organization & company country	AS-to-organization data	2026-10-21
Network type	CleanIP ASN canon	2026-10-22
Exchanges & facilities	Operator self-reported interconnection data	2026-10-21
Announced prefixes & BGP neighbours	Public BGP routing data	2026-10-22
IPv4 geography	Geolocation database	—
RPKI validation	RPKI ROA validation data	2026-10-22
Rank & customer cone	CAIDA AS Rank	2026-10-01
Estimated users (APNIC)	APNIC Labs user estimates	2026-10-20
Network tags	Public routing data community tags	2026-10-22
IP reputation	CleanIP lookups and neighbour sampling	—

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Multi-source cross-checks · In-house reputation data · Real data only