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CIDR Range

203.133.3.16/28

Addresses
16
16
Sub-ranges
0+
within this block
PTR Density
100.0%
16 of 16 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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Geolocation

All 16 IP addresses in 203.133.3.16/28

Not announced as an exact prefix — covered by the announced supernet 203.133.0.0/17.

Announced prefix
Origin AS
Announcement samples
4,985
Last seen
2026-07-23 09:41:23

Frequently Asked Questions

What is 203.133.3.16/28?

203.133.3.16/28 is a CIDR network block containing 16 IPv4 addresses (from 203.133.3.16 to 203.133.3.31). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 203.133.3.16/28 network?

The 203.133.3.16/28 range is allocated to Hoshin Multimedia Center Inc. and announced via AS9416 from Taiwan.

How many IP addresses are in 203.133.3.16/28?

203.133.3.16/28 contains exactly 16 usable IPv4 addresses. A /28 prefix length means 16 addresses are covered by this single routing entry.

Last updated: 2026-07-23 09:55:31 UTC
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