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CIDR Range

181.99.104.0/23

Addresses
512
512
Sub-ranges
0+
within this block
PTR Density
99.8%
511 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.

78/100
Moderate
How this score is built

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

Geolocation

First and last addresses in 181.99.104.0/23

181.99.104.0/23 runs from 181.99.104.0 to 181.99.105.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 181.96.0.0/14.

Announced prefix
Origin AS
Announcement samples
32,686
Last seen
2026-11-15 00:56:29

Frequently Asked Questions

What is 181.99.104.0/23?

181.99.104.0/23 is a CIDR network block containing 512 IPv4 addresses (from 181.99.104.0 to 181.99.105.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 181.99.104.0/23 network?

The 181.99.104.0/23 range is allocated to Telecom Argentina S.A. and announced via AS7303 from Argentina.

Last updated: 2026-11-15 04:09:05 UTC
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