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CIDR Range

81.27.208.0/21

Addresses
2,048
2.0K
Sub-ranges
7+
within this block
PTR Density
2.8%
57 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.

80/100
Trusted
How this score is built

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

Ranges inside 81.27.208.0/21

First and last addresses in 81.27.208.0/21

81.27.208.0/21 runs from 81.27.208.0 to 81.27.215.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 81.27.208.0/20.

Announced prefix
Origin AS
Announcement samples
36,143
Last seen
2026-10-27 12:54:15

Frequently Asked Questions

What is 81.27.208.0/21?

81.27.208.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 81.27.208.0 to 81.27.215.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 81.27.208.0/21 network?

The 81.27.208.0/21 range is allocated to GlobalConnect A/S and announced via AS42525 from Denmark.

Last updated: 2026-10-27 13:24:05 UTC
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