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CIDR Range

221.192.199.52/30

Addresses
4
4
Sub-ranges
0+
within this block
PTR Density
100.0%
4 of 4 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.

76/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Geolocation

All 4 IP addresses in 221.192.199.52/30

Not announced as an exact prefix — covered by the announced supernet 221.192.0.0/15.

Announced prefix
Origin AS
Announcement samples
12,033
Last seen
2026-07-25 19:54:17

Frequently Asked Questions

What is 221.192.199.52/30?

221.192.199.52/30 is a CIDR network block containing 4 IPv4 addresses (from 221.192.199.52 to 221.192.199.55). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 221.192.199.52/30 network?

The 221.192.199.52/30 range is allocated to CHINA UNICOM China169 Backbone and announced via AS4837 from China.

How many IP addresses are in 221.192.199.52/30?

221.192.199.52/30 contains exactly 4 usable IPv4 addresses. A /30 prefix length means 4 addresses are covered by this single routing entry.

Last updated: 2026-07-25 19:55:31 UTC
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