CIDR Range

66.57.54.0/24

256 IPs /24 Charter Communications, Inc AS11426 United States ARIN

Addresses

256

IP Range

66.57.54.0

→ 66.57.54.255

Sub-ranges

37+

within this block

PTR Density

99.6%

255 of 256 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.

81/100

Trusted

How this score is built

Baseline (neutral) 65
Long-established allocation (26y) +6
Has a reverse-DNS (PTR) record +5
Isp allocation +5
Trust score 81 / 100

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

Ranges inside 66.57.54.0/24

CIDR	IPs	Organization	ASN	Country
66.57.54.0/27	32	Charter Communications, Inc	AS11426	US
66.57.54.96/28	16	Charter Communications, Inc	AS11426	US
66.57.54.128/28	16	Charter Communications, Inc	AS11426	US
66.57.54.160/28	16	Charter Communications, Inc	AS11426	US
66.57.54.112/29	8	Charter Communications, Inc	AS11426	US
66.57.54.248/29	8	Charter Communications, Inc	AS11426	US
66.57.54.152/29	8	Charter Communications, Inc	AS11426	US
66.57.54.176/29	8	Charter Communications, Inc	AS11426	US
66.57.54.192/29	8	Charter Communications, Inc	AS11426	US
66.57.54.216/29	8	Charter Communications, Inc	AS11426	US
66.57.54.88/29	8	Charter Communications, Inc	AS11426	US
66.57.54.40/29	8	Charter Communications, Inc	AS11426	US
66.57.54.48/29	8	Charter Communications, Inc	AS11426	US
66.57.54.56/29	8	Charter Communications, Inc	AS11426	US
66.57.54.32/29	8	Charter Communications, Inc	AS11426	US
66.57.54.232/30	4	Charter Communications, Inc	AS11426	US
66.57.54.204/30	4	Charter Communications, Inc	AS11426	US
66.57.54.208/30	4	Charter Communications, Inc	AS11426	US
66.57.54.244/30	4	Charter Communications, Inc	AS11426	US
66.57.54.240/30	4	Charter Communications, Inc	AS11426	US
66.57.54.212/30	4	Charter Communications, Inc	AS11426	US
66.57.54.236/30	4	Charter Communications, Inc	AS11426	US
66.57.54.224/30	4	Charter Communications, Inc	AS11426	US
66.57.54.228/30	4	Charter Communications, Inc	AS11426	US
66.57.54.200/30	4	Charter Communications, Inc	AS11426	US
66.57.54.84/30	4	Charter Communications, Inc	AS11426	US
66.57.54.80/30	4	Charter Communications, Inc	AS11426	US
66.57.54.76/30	4	Charter Communications, Inc	AS11426	US
66.57.54.120/30	4	Charter Communications, Inc	AS11426	US
66.57.54.124/30	4	Charter Communications, Inc	AS11426	US
66.57.54.72/30	4	Charter Communications, Inc	AS11426	US
66.57.54.144/30	4	Charter Communications, Inc	AS11426	US

First and last addresses in 66.57.54.0/24

66.57.54.0/24 runs from 66.57.54.0 to 66.57.54.255.

First 16

66.57.54.0 66.57.54.1 66.57.54.2 66.57.54.3 66.57.54.4 66.57.54.5 66.57.54.6 66.57.54.7 66.57.54.8 66.57.54.9 66.57.54.10 66.57.54.11 66.57.54.12 66.57.54.13 66.57.54.14 66.57.54.15

Last 16

66.57.54.240 66.57.54.241 66.57.54.242 66.57.54.243 66.57.54.244 66.57.54.245 66.57.54.246 66.57.54.247 66.57.54.248 66.57.54.249 66.57.54.250 66.57.54.251 66.57.54.252 66.57.54.253 66.57.54.254 66.57.54.255

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 66.57.0.0/16.

Announced prefix

66.57.0.0/16

Origin AS

AS11426

Announcement samples

22,446

Last seen

2026-11-14 01:21:34

Frequently Asked Questions

What is 66.57.54.0/24?

66.57.54.0/24 is a CIDR network block containing 256 IPv4 addresses (from 66.57.54.0 to 66.57.54.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 66.57.54.0/24 network?

The 66.57.54.0/24 range is allocated to Charter Communications, Inc and announced via AS11426 from United States.

How many IP addresses are in 66.57.54.0/24?

66.57.54.0/24 contains exactly 256 usable IPv4 addresses. A /24 prefix length means 256 addresses are covered by this single routing entry.

Last updated: 2026-11-14 01:39:05 UTC