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CIDR Range

83.238.240.0/21

Addresses
2,048
2.0K
Sub-ranges
12+
within this block
PTR Density
37.5%
768 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

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

Ranges inside 83.238.240.0/21

First and last addresses in 83.238.240.0/21

83.238.240.0/21 runs from 83.238.240.0 to 83.238.247.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 83.238.0.0/16.

Announced prefix
Origin AS
Announcement samples
28,135
Last seen
2026-11-04 22:01:54

Frequently Asked Questions

What is 83.238.240.0/21?

83.238.240.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 83.238.240.0 to 83.238.247.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 83.238.240.0/21 network?

The 83.238.240.0/21 range is allocated to Netia SA and announced via AS12741 from Poland.

Last updated: 2026-11-04 22:39:06 UTC
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