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CIDR Range

65.51.128.0/17

32.8K IPs /17 United States ARIN
Addresses
32,768
32.8K
IP Range
65.51.128.0
→ 65.51.255.255
Sub-ranges
50+
within this block
PTR Density
95.6%
31.3K of 32.8K IPs have PTR

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.

76/100
Moderate
How this score is built

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 65.51.128.0/17

CIDRIPsOrganizationASNCountry
65.51.192.0/20 4.1K — — US
65.51.176.0/20 4.1K Cablevision Lightpath LLC AS54004 US
65.51.176.0/20 4.1K — — US
65.51.160.0/20 4.1K — — US
65.51.176.0/20 4.1K Cablevision Lightpath LLC AS54004 US
65.51.240.0/20 4.1K — — US
65.51.128.0/20 4.1K — — US
65.51.192.0/21 2.0K Cablevision Lightpath LLC AS54004 US
65.51.136.0/21 2.0K Cablevision Lightpath LLC AS54004 US
65.51.192.0/21 2.0K Cablevision Lightpath LLC AS54004 US
65.51.136.0/21 2.0K Cablevision Lightpath LLC AS54004 US
65.51.216.0/21 2.0K — — US
65.51.232.0/21 2.0K — — US
65.51.232.0/21 2.0K Cablevision Lightpath LLC AS54004 US
65.51.160.0/21 2.0K Cablevision Lightpath LLC AS54004 US
65.51.160.0/21 2.0K Cablevision Lightpath LLC AS54004 US
65.51.232.0/21 2.0K Cablevision Lightpath LLC AS54004 US
65.51.148.0/22 1.0K Cablevision Lightpath LLC AS54004 US
65.51.148.0/22 1.0K — — US
65.51.148.0/22 1.0K Cablevision Lightpath LLC AS54004 US
65.51.156.0/22 1.0K — — US
65.51.156.0/22 1.0K Cablevision Lightpath LLC AS54004 US
65.51.156.0/22 1.0K Cablevision Lightpath LLC AS54004 US
65.51.228.0/22 1.0K — — US
65.51.212.0/22 1.0K Cablevision Lightpath LLC AS54004 US
65.51.212.0/22 1.0K — — US
65.51.212.0/22 1.0K Cablevision Lightpath LLC AS54004 US
65.51.224.0/22 1.0K Cablevision Lightpath LLC AS54004 US
65.51.224.0/22 1.0K Cablevision Lightpath LLC AS54004 US
65.51.252.0/22 1.0K Cablevision Lightpath LLC AS54004 US
65.51.252.0/22 1.0K Cablevision Lightpath LLC AS54004 US
65.51.204.0/22 1.0K Cablevision Lightpath LLC AS54004 US

First and last addresses in 65.51.128.0/17

65.51.128.0/17 runs from 65.51.128.0 to 65.51.255.255.

First 16
65.51.128.0 65.51.128.1 65.51.128.2 65.51.128.3 65.51.128.4 65.51.128.5 65.51.128.6 65.51.128.7 65.51.128.8 65.51.128.9 65.51.128.10 65.51.128.11 65.51.128.12 65.51.128.13 65.51.128.14 65.51.128.15
Last 16
65.51.255.240 65.51.255.241 65.51.255.242 65.51.255.243 65.51.255.244 65.51.255.245 65.51.255.246 65.51.255.247 65.51.255.248 65.51.255.249 65.51.255.250 65.51.255.251 65.51.255.252 65.51.255.253 65.51.255.254 65.51.255.255

BGP Routing

Live BGP anomalies →

This block is announced in BGP, observed across our RIPE RIS collectors.

Announced prefix
65.51.128.0/17
Origin AS
AS54004
Announcement samples
19,253
Last seen
2026-11-13 04:20:53

Frequently Asked Questions

What is 65.51.128.0/17?

65.51.128.0/17 is a CIDR network block containing 32,768 IPv4 addresses (from 65.51.128.0 to 65.51.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 65.51.128.0/17 network?

The 65.51.128.0/17 range is allocated to an unknown organization from United States.

Last updated: 2026-11-13 07:24:05 UTC
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