This Java library primarily provides a way to check if an IP address or ASN (Autonomous System Number) is formally registered under a CC (Country Code).

It means that you can check, for example, if the IP address 8.8.8.8 is formally registered to the country code "US" (United States).

Amongst other reasons, this is useful for applications that require to apply IP/ASN filtering to access resources -- e.g., blocking users from certain countries.

The library parses all the RIR (Regional Internet Registry) databases, which follows the RIR statistics exchange format. Therefore, it ensures that if an IP or ASN is published by a RIR (e.g., APNIC, ), then the IP2ASN2CC is able to find and correctly match IP/ASN to the respective country code.

Maven:

<dependency>
    <groupId>com.axlabs</groupId>
    <artifactId>ip2asn2cc</artifactId>
    <version>0.0.1</version>
</dependency>

Gradle:

compile 'com.axlabs:ip2asn2cc:0.0.1'

IMPORTANT: make sure that your project is using the Maven Central repository. Check more info on how to include it on here (Gradle) and here (Maven).

• Reformatting and refactoring to fit personal formatting style.
• Add the countryCode attribute to IPv4Subnet and IPv6Subnet classes.
• Update build.gradle archivesBaseName property and add support for publish to maven local.

   Copyright 2015 AxLabs GmbH
   
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
   
       https://www.apache.org/licenses/LICENSE-2.0
       
   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.