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CIDR Range

173.105.64.0/18

16.4K IPs /18 Amazon.com, Inc. AS16509 United States ARIN
Addresses
16,384
16.4K
IP Range
173.105.64.0
→ 173.105.127.255
Sub-ranges
0+
within this block
PTR Density
0.0%
0 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.

62/100
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 173.105.64.0/18

173.105.64.0/18 runs from 173.105.64.0 to 173.105.127.255.

First 16
173.105.64.0 173.105.64.1 173.105.64.2 173.105.64.3 173.105.64.4 173.105.64.5 173.105.64.6 173.105.64.7 173.105.64.8 173.105.64.9 173.105.64.10 173.105.64.11 173.105.64.12 173.105.64.13 173.105.64.14 173.105.64.15
Last 16
173.105.127.240 173.105.127.241 173.105.127.242 173.105.127.243 173.105.127.244 173.105.127.245 173.105.127.246 173.105.127.247 173.105.127.248 173.105.127.249 173.105.127.250 173.105.127.251 173.105.127.252 173.105.127.253 173.105.127.254 173.105.127.255

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 173.96.0.0/11.

Announced prefix
173.96.0.0/11
Origin AS
AS16509
Announcement samples
13,422
Last seen
2026-11-13 08:53:02

Frequently Asked Questions

What is 173.105.64.0/18?

173.105.64.0/18 is a CIDR network block containing 16,384 IPv4 addresses (from 173.105.64.0 to 173.105.127.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 173.105.64.0/18 network?

The 173.105.64.0/18 range is allocated to Amazon.com, Inc. and announced via AS16509 from United States.

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