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CIDR Range

217.91.128.0/20

Addresses
4,096
4.1K
Sub-ranges
0+
within this block
PTR Density
98.7%
4.0K of 4.1K 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 217.91.128.0/20

217.91.128.0/20 runs from 217.91.128.0 to 217.91.143.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 217.80.0.0/12.

Announced prefix
Origin AS
Announcement samples
11,829
Last seen
2026-11-14 19:43:29

Frequently Asked Questions

What is 217.91.128.0/20?

217.91.128.0/20 is a CIDR network block containing 4,096 IPv4 addresses (from 217.91.128.0 to 217.91.143.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 217.91.128.0/20 network?

The 217.91.128.0/20 range is allocated to Deutsche Telekom AG and announced via AS3320 from Germany.

Last updated: 2026-11-14 20:09:05 UTC
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