CIDR Range

89.231.56.0/21

2.0K IPs /21 Multimedia Polska Sp. z o.o. AS21021 Poland RIPE

Addresses

2,048

2.0K

IP Range

89.231.56.0

→ 89.231.63.255

Sub-ranges

within this block

PTR Density

100.0%

2.0K of 2.0K 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 (20y) +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 89.231.56.0/21

89.231.56.0/21 runs from 89.231.56.0 to 89.231.63.255.

First 16

89.231.56.0 89.231.56.1 89.231.56.2 89.231.56.3 89.231.56.4 89.231.56.5 89.231.56.6 89.231.56.7 89.231.56.8 89.231.56.9 89.231.56.10 89.231.56.11 89.231.56.12 89.231.56.13 89.231.56.14 89.231.56.15

Last 16

89.231.63.240 89.231.63.241 89.231.63.242 89.231.63.243 89.231.63.244 89.231.63.245 89.231.63.246 89.231.63.247 89.231.63.248 89.231.63.249 89.231.63.250 89.231.63.251 89.231.63.252 89.231.63.253 89.231.63.254 89.231.63.255

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 89.231.0.0/16.

Announced prefix

89.231.0.0/16

Origin AS

AS21021

Announcement samples

29,630

Last seen

2026-10-27 04:17:10

Frequently Asked Questions

What is 89.231.56.0/21?

89.231.56.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 89.231.56.0 to 89.231.63.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 89.231.56.0/21 network?

The 89.231.56.0/21 range is allocated to Multimedia Polska Sp. z o.o. and announced via AS21021 from Poland.

Last updated: 2026-10-27 05:09:06 UTC