Skip to main content

IpToolsKit© 2025

Resources

Organizations Learn & Guides Tools

Tools

Ping DNS Lookup Speed Test

Legal

Privacy Policy About Imprint

81.23.0.0/21

Russia

CIDR Block Overview

CIDR

81.23.0.0/21

Approx. Size

2,048 IPs

Mask

/21

Example IP Addresses

Network & Provider

Autonomous System Number

Geographic Location