CIDR Range

72.35.90.0/23

512 IPs /23 Flexential Colorado Corp. AS13649 United States ARIN

Addresses

512

IP Range

72.35.90.0

→ 72.35.91.255

Sub-ranges

within this block

PTR Density

10.4%

53 of 512 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.

80/100

Trusted

How this score is built

Baseline (neutral) 65
Long-established allocation (21y) +6
Has a reverse-DNS (PTR) record +5
Enterprise allocation +4
Trust score 80 / 100

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

Geolocation

First and last addresses in 72.35.90.0/23

72.35.90.0/23 runs from 72.35.90.0 to 72.35.91.255.

First 16

72.35.90.0 72.35.90.1 72.35.90.2 72.35.90.3 72.35.90.4 72.35.90.5 72.35.90.6 72.35.90.7 72.35.90.8 72.35.90.9 72.35.90.10 72.35.90.11 72.35.90.12 72.35.90.13 72.35.90.14 72.35.90.15

Last 16

72.35.91.240 72.35.91.241 72.35.91.242 72.35.91.243 72.35.91.244 72.35.91.245 72.35.91.246 72.35.91.247 72.35.91.248 72.35.91.249 72.35.91.250 72.35.91.251 72.35.91.252 72.35.91.253 72.35.91.254 72.35.91.255

BGP Routing

Live BGP anomalies →

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

Announced prefix

72.35.90.0/23

Origin AS

AS13649

Announcement samples

27,945

Last seen

2026-11-10 05:23:18

Frequently Asked Questions

What is 72.35.90.0/23?

72.35.90.0/23 is a CIDR network block containing 512 IPv4 addresses (from 72.35.90.0 to 72.35.91.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 72.35.90.0/23 network?

The 72.35.90.0/23 range is allocated to Flexential Colorado Corp. and announced via AS13649 from United States.

Last updated: 2026-11-10 05:24:06 UTC