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CIDR Range

201.163.128.0/18

Addresses
16,384
16.4K
Sub-ranges
32+
within this block
PTR Density
99.0%
16.2K of 16.4K 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 201.163.128.0/18

CIDRIPsOrganizationASNCountry
201.163.176.0/20 4.1K Alestra, S. de R.L. de C.V. AS11172 MX
201.163.160.0/20 4.1K Alestra, S. de R.L. de C.V. AS11172 MX
201.163.144.0/21 2.0K Alestra, S. de R.L. de C.V. AS11172 MX
201.163.156.0/22 1.0K Alestra, S. de R.L. de C.V. AS11172 MX
201.163.136.0/22 1.0K Alestra, S. de R.L. de C.V. AS11172 MX
201.163.128.0/23 512 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.142.0/23 512 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.130.0/23 512 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.132.0/23 512 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.141.0/24 256 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.154.0/24 256 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.134.0/24 256 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.153.0/24 256 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.135.0/24 256 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.140.0/24 256 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.155.0/25 128 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.128/25 128 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.155.128/26 64 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.96/27 32 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.64/27 32 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.155.224/27 32 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.0/27 32 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.155.192/27 32 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.48/29 8 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.60/30 4 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.44/30 4 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.40/30 4 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.36/30 4 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.32/30 4 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.56/31 2 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.59/32 1 Alestra, S. de R.L. de C.V. AS11172 MX
201.163.152.58/32 1 Alestra, S. de R.L. de C.V. AS11172 MX

First and last addresses in 201.163.128.0/18

201.163.128.0/18 runs from 201.163.128.0 to 201.163.191.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 201.163.0.0/16.

Announced prefix
Origin AS
Announcement samples
197,461
Last seen
2026-11-13 06:44:59

Frequently Asked Questions

What is 201.163.128.0/18?

201.163.128.0/18 is a CIDR network block containing 16,384 IPv4 addresses (from 201.163.128.0 to 201.163.191.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 201.163.128.0/18 network?

The 201.163.128.0/18 range is allocated to Alestra, S. de R.L. de C.V. and announced via AS11172 from Mexico.

Last updated: 2026-11-13 08:54:05 UTC
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