IPShield

IPShield is a DNS server that checks IP addresses against the Firehol level 1 list and known datacenter IP ranges. This list is updated every 12 hours.

Usage

To check an IP address, send a DNS query to the IPShield server:

Response

• SAFE: The IP is not on any blocklist.
• DATACENTER: The IP belongs to a known datacenter.
• FLAGGED: The IP is on the Firehol level 1 blocklist.

Usage

You can use this with almost any language/framework, I have added examples for popular languages in the examples folder on the projects GitHub repo.

Security

You should probably use it within a private network if you really want to use it in production. Since the requests happen over DNS, it is not encrypted.

I am planning to implement Transaction Signatures (TSIG) for secure DNS server communications when I get some time, star the project if you wanna stay in the loop

This project is open source. For more information, visit the GitHub repository.

Built by Shivam Mishra.