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CIDR Range

181.181.128.0/17

Addresses
32,768
32.8K
Sub-ranges
0+
within this block
PTR Density
98.5%
32.3K of 32.8K 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.

77/100
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 181.181.128.0/17

181.181.128.0/17 runs from 181.181.128.0 to 181.181.255.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 181.180.0.0/14.

Announced prefix
Origin AS
Announcement samples
50,854
Last seen
2026-11-13 11:40:24

Frequently Asked Questions

What is 181.181.128.0/17?

181.181.128.0/17 is a CIDR network block containing 32,768 IPv4 addresses (from 181.181.128.0 to 181.181.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 181.181.128.0/17 network?

The 181.181.128.0/17 range is allocated to TELEFONICA VENEZOLANA, C.A. and announced via AS6306 from Venezuela.

Last updated: 2026-11-13 16:24:05 UTC
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