CIDR Range

6.42.128.0/18

16.4K IPs /18 United States ARIN

Addresses

16,384

16.4K

IP Range

6.42.128.0

→ 6.42.191.255

Sub-ranges

12+

within this block

PTR Density

0.0%

0 of 16.4K 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.

71/100

Moderate

How this score is built

Baseline (neutral) 65
Long-established allocation (32y) +6
Trust score 71 / 100

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

Ranges inside 6.42.128.0/18

CIDR	IPs	Organization	ASN	Country
6.42.128.0/19	8.2K	Headquarters, USAISC	AS1540	US
6.42.128.0/19	8.2K	Headquarters, USAISC	AS1540	US
6.42.160.0/20	4.1K	Headquarters, USAISC	AS1540	US
6.42.160.0/20	4.1K	Headquarters, USAISC	AS1540	US
6.42.176.0/21	2.0K	Headquarters, USAISC	AS1540	US
6.42.176.0/21	2.0K	Headquarters, USAISC	AS1540	US
6.42.184.0/22	1.0K	Headquarters, USAISC	AS1540	US
6.42.184.0/22	1.0K	Headquarters, USAISC	AS1540	US
6.42.188.0/23	512	Headquarters, USAISC	AS1540	US
6.42.188.0/23	512	Headquarters, USAISC	AS1540	US
6.42.190.0/23	512	United States Department of Defense DoD	AS749	US
6.42.190.0/23	512	United States Department of Defense DoD	AS749	US

Geolocation

First and last addresses in 6.42.128.0/18

6.42.128.0/18 runs from 6.42.128.0 to 6.42.191.255.

First 16

6.42.128.0 6.42.128.1 6.42.128.2 6.42.128.3 6.42.128.4 6.42.128.5 6.42.128.6 6.42.128.7 6.42.128.8 6.42.128.9 6.42.128.10 6.42.128.11 6.42.128.12 6.42.128.13 6.42.128.14 6.42.128.15

Last 16

6.42.191.240 6.42.191.241 6.42.191.242 6.42.191.243 6.42.191.244 6.42.191.245 6.42.191.246 6.42.191.247 6.42.191.248 6.42.191.249 6.42.191.250 6.42.191.251 6.42.191.252 6.42.191.253 6.42.191.254 6.42.191.255

BGP Routing

Live BGP anomalies →

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

Announced prefix

6.42.128.0/18

Origin AS

AS749

Announcement samples

27,235

Last seen

2026-11-13 18:03:52

Frequently Asked Questions

What is 6.42.128.0/18?

6.42.128.0/18 is a CIDR network block containing 16,384 IPv4 addresses (from 6.42.128.0 to 6.42.191.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 6.42.128.0/18 network?

The 6.42.128.0/18 range is allocated to an unknown organization from United States.

Last updated: 2026-11-13 18:09:05 UTC