CIDR Range

66.85.64.0/20

4.1K IPs /20 United States ARIN

Addresses

4,096

4.1K

IP Range

66.85.64.0

→ 66.85.79.255

Sub-ranges

28+

within this block

PTR Density

2.6%

105 of 4.1K 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.

70/100

Moderate

How this score is built

Baseline (neutral) 65
Has a reverse-DNS (PTR) record +5
Trust score 70 / 100

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

Ranges inside 66.85.64.0/20

CIDR	IPs	Organization	ASN	Country
66.85.72.0/21	2.0K	CyberCloud Professionals LLC	AS19969	US
66.85.72.0/21	2.0K	CyberCloud Professionals LLC	AS19969	US
66.85.72.0/22	1.0K	—	—	US
66.85.64.0/23	512	—	—	US
66.85.70.0/23	512	—	—	US
66.85.78.0/23	512	—	—	US
66.85.64.0/23	512	—	—	US
66.85.67.0/24	256	—	—	US
66.85.77.0/24	256	—	—	US
66.85.66.0/24	256	—	—	US
66.85.66.0/24	256	—	—	US
66.85.71.0/24	256	—	—	US
66.85.67.0/24	256	Dexcom, INC.	AS394301	US
66.85.67.0/24	256	Dexcom, INC.	AS394301	US
66.85.70.0/24	256	ATOS IT Solutions and Services, Inc.	AS14566	US
66.85.68.0/24	256	Routesi LLC	AS53723	US
66.85.70.0/24	256	ATOS IT Solutions and Services, Inc.	AS14566	US
66.85.68.0/24	256	Routesi LLC	AS53723	US
66.85.68.0/24	256	—	—	US
66.85.69.0/24	256	HBU.edu	AS394309	US
66.85.69.0/24	256	HBU.edu	AS394309	US
66.85.69.0/24	256	—	—	US
66.85.76.128/25	128	—	—	US
66.85.76.64/26	64	—	—	US
66.85.76.32/27	32	—	—	US
66.85.76.0/28	16	—	—	US
66.85.76.24/29	8	—	—	US
66.85.76.16/29	8	—	—	US

First and last addresses in 66.85.64.0/20

66.85.64.0/20 runs from 66.85.64.0 to 66.85.79.255.

First 16

66.85.64.0 66.85.64.1 66.85.64.2 66.85.64.3 66.85.64.4 66.85.64.5 66.85.64.6 66.85.64.7 66.85.64.8 66.85.64.9 66.85.64.10 66.85.64.11 66.85.64.12 66.85.64.13 66.85.64.14 66.85.64.15

Last 16

66.85.79.240 66.85.79.241 66.85.79.242 66.85.79.243 66.85.79.244 66.85.79.245 66.85.79.246 66.85.79.247 66.85.79.248 66.85.79.249 66.85.79.250 66.85.79.251 66.85.79.252 66.85.79.253 66.85.79.254 66.85.79.255

Frequently Asked Questions

What is 66.85.64.0/20?

66.85.64.0/20 is a CIDR network block containing 4,096 IPv4 addresses (from 66.85.64.0 to 66.85.79.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 66.85.64.0/20 network?

The 66.85.64.0/20 range is allocated to an unknown organization from United States.

Last updated: 2026-10-31 18:54:06 UTC