Are IP range libraries accurate?

They are aggregated from allocation data and change over time; treat them as reference and verify important blocks.

Can I use the exported CIDR list directly?

Yes - the TXT export is formatted as CIDR lines, one per line, ready for ACL or firewall rules.

Networking Basics

IP Range Library Guide: Cloud, CDN, Broadband, CGNAT, CERNET and Proxy Blocks

What Is an IP Range Library

An IP range library aggregates IP addresses into CIDR blocks by organization, purpose, or region - e.g. 106.11.0.0/16 for a cloud provider or 202.112.0.0/16 for an education network.

Six Common Block Types

Cloud servers: datacenter IPs with cloud-provider ASNs, used for self-hosting and crawlers.
CDN nodes: edge caches spread across regions, used for acceleration and scheduling.
Home broadband: real public IPs dynamically assigned by ISPs.
CGNAT: shared carrier egress addresses (RFC 6598) that cannot accept inbound connections.
Education networks: CERNET and campus ranges.
Proxy nodes: overseas IDC ranges commonly used as relays.

What You Can Do with a Range Library

Firewall ACLs: allow or block blocks by country or operator.
Geo-blocking: restrict access from selected regions.
CDN scheduling: route users to the nearest edge.
Risk analysis: distinguish datacenter traffic from residential traffic.

This Site's Libraries

This site offers an "IP Type Library" grouped by usage and a "Global IP Library" grouped by country/region, both with filtering and CIDR export for rule configuration.

Open "IP Type Library" to filter and export the CIDR blocks you need by usage. →

What Is an IP Range Library

Six Common Block Types

What You Can Do with a Range Library

This Site's Libraries

FAQ