Netblocks

This is not an official Google product.

This module retrieves the DNS entries recursively as per the below links

The GCE ranges
    https://cloud.google.com/compute/docs/faq#where_can_i_find_product_name_short_ip_ranges
The Google Services ranges
    https://support.google.com/a/answer/60764
The AWS ranges
    https://docs.aws.amazon.com/general/latest/gr/aws-ip-ranges.html

Install the package with pip install netblocks or pip install git+https://github.com/hm-distro/netblocks/

The fetch() method has the default parameter value of initial_dns_list=[GOOGLE_INITIAL_CLOUD_NETBLOCK_DNS, GOOGLE_INITIAL_SPF_NETBLOCK_DNS]

where

#The GCE ranges
GOOGLE_INITIAL_CLOUD_NETBLOCK_DNS = "_cloud-netblocks.googleusercontent.com"

#The Google Services ranges
GOOGLE_INITIAL_SPF_NETBLOCK_DNS= "_spf.google.com"

#The AWS ranges
AWS_IP_RANGES="https://ip-ranges.amazonaws.com/ip-ranges.json"

See here on how to use this module in Google App Engine

API Usage

import netblocks
cidr_blocks = set()
api = netblocks.NetBlocks()
try:
    # returns both GOOGLE_INITIAL_CLOUD_NETBLOCK_DNS and GOOGLE_INITIAL_SPF_NETBLOCK_DNS
    cidr_blocks = api.fetch()
    
    # To get only the SPF list use the below:
    #  cidr_blocks = api.fetch([netblocks.GOOGLE_INITIAL_SPF_NETBLOCK_DNS])

    
    # To get only the GCE list use the below:
    #  cidr_blocks = api.fetch([netblocks.GOOGLE_INITIAL_CLOUD_NETBLOCK_DNS]) 
    
    # To get only the AWS list use the below:
    #  cidr_blocks = api.fetch([netblocks.AWS_IP_RANGES]) 
    
    """
    The cidr_blocks set contains strings like the below
    ip4:146.148.2.0/23
    ...
    ip6:2600:1900::/35
    """
    
except netblocks.NetBlockRetrievalException as err:
    #exception handling
    pass

Language

• Python

Dependencies

requests

License

Apache 2.0; see LICENSE for details.