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CIDR Range

64.205.104.0/21

2.0K IPs /21 United States ARIN
Addresses
2,048
2.0K
Sub-ranges
16+
within this block
PTR Density
0.0%
0 of 2.0K 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.

59/100
Caution
How this score is built

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

Ranges inside 64.205.104.0/21

First and last addresses in 64.205.104.0/21

64.205.104.0/21 runs from 64.205.104.0 to 64.205.111.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 64.204.0.0/15.

Announced prefix
Origin AS
⚠ 2 origins (MOAS)
Announcement samples
8,932
Last seen
2026-11-03 04:00:22

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 64.205.104.0/21?

64.205.104.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 64.205.104.0 to 64.205.111.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 64.205.104.0/21 network?

The 64.205.104.0/21 range is allocated to an unknown organization from United States.

Last updated: 2026-11-03 04:54:05 UTC
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