CIDR Range

40.137.16.0/20

4.1K IPs /20 Windstream Communications LLC AS7029 United States ARIN

Addresses

4,096

4.1K

IP Range

40.137.16.0

→ 40.137.31.255

Sub-ranges

within this block

PTR Density

99.2%

4.1K 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.

78/100

Moderate

How this score is built

Baseline (neutral) 65
Has a reverse-DNS (PTR) record +5
Isp allocation +5
Established allocation (14y) +3
Trust score 78 / 100

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

Geolocation

First and last addresses in 40.137.16.0/20

40.137.16.0/20 runs from 40.137.16.0 to 40.137.31.255.

First 16

40.137.16.0 40.137.16.1 40.137.16.2 40.137.16.3 40.137.16.4 40.137.16.5 40.137.16.6 40.137.16.7 40.137.16.8 40.137.16.9 40.137.16.10 40.137.16.11 40.137.16.12 40.137.16.13 40.137.16.14 40.137.16.15

Last 16

40.137.31.240 40.137.31.241 40.137.31.242 40.137.31.243 40.137.31.244 40.137.31.245 40.137.31.246 40.137.31.247 40.137.31.248 40.137.31.249 40.137.31.250 40.137.31.251 40.137.31.252 40.137.31.253 40.137.31.254 40.137.31.255

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 40.136.0.0/15.

Announced prefix

40.136.0.0/15

Origin AS

AS7029

Announcement samples

15,348

Last seen

2026-10-27 08:54:19

Frequently Asked Questions

What is 40.137.16.0/20?

40.137.16.0/20 is a CIDR network block containing 4,096 IPv4 addresses (from 40.137.16.0 to 40.137.31.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 40.137.16.0/20 network?

The 40.137.16.0/20 range is allocated to Windstream Communications LLC and announced via AS7029 from United States.

Last updated: 2026-10-27 08:54:05 UTC