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CIDR Range

213.104.64.0/21

Addresses
2,048
2.0K
Sub-ranges
0+
within this block
PTR Density
100.0%
2.0K 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.

81/100
Trusted
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 213.104.64.0/21

213.104.64.0/21 runs from 213.104.64.0 to 213.104.71.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 213.104.0.0/16.

Announced prefix
Origin AS
Announcement samples
18,808
Last seen
2026-11-02 02:53:01

Frequently Asked Questions

What is 213.104.64.0/21?

213.104.64.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 213.104.64.0 to 213.104.71.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 213.104.64.0/21 network?

The 213.104.64.0/21 range is allocated to Virgin Media and announced via AS5089 from United Kingdom.

Last updated: 2026-11-02 03:09:05 UTC
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