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CIDR Range

3.11.64.0/18

Addresses
16,384
16.4K
Sub-ranges
0+
within this block
PTR Density
100.0%
16.4K 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.

73/100
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 3.11.64.0/18

3.11.64.0/18 runs from 3.11.64.0 to 3.11.127.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 3.8.0.0/14.

Announced prefix
Origin AS
Announcement samples
19,741
Last seen
2026-10-27 15:15:44

RIR Ownership History

Atom feed ⇲

Allocation changes captured from regional internet registry (RIR) delegation files, re-imported every six hours.

Date Event From To
2026-05-10 New Allocation — US

Frequently Asked Questions

What is 3.11.64.0/18?

3.11.64.0/18 is a CIDR network block containing 16,384 IPv4 addresses (from 3.11.64.0 to 3.11.127.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 3.11.64.0/18 network?

The 3.11.64.0/18 range is allocated to Amazon.com, Inc. and announced via AS16509 from United Kingdom.

Last updated: 2026-10-27 15:24:06 UTC
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