pybgpasn 1.0.10

A small package for obtaining the Registered ISP name per ASN number

PYBGPASN

pybgpasn is a Python package for looking up Autonomous System Number (ASN) information. The package includes a database of ASNs and their corresponding provider names.

Installation

You can install pybgpasn using pip:

pip install pybgpasn

Usage

Basic Usage

To use pybgpasn, first create an instance of the ASNCatalog class:

from pybgpasn import ASNCatalog

catalog = ASNCatalog()

The ASNCatalog class loads the ASN data from the package database file during initialization.

To look up an ASN's provider name, call the get_provider_name method:

asn = 15169  # Google LLC
provider_name = catalog.get_provider_name(asn)
print(provider_name)  # prints "Google LLC"

Private ASNs

If the provided ASN falls within the range of 64512 to 65535 (inclusive), the get_provider_name method will return "PRIVATE AS":

asn = 64512  # Start of private ASN range
provider_name = catalog.get_provider_name(asn)
print(provider_name)  # prints "PRIVATE AS"

asn = 65535  # End of private ASN range
provider_name = catalog.get_provider_name(asn)
print(provider_name)  # prints "PRIVATE AS"

Errors

If an invalid ASN is provided to the get_provider_name method, an error will be raised.

• If the provided ASN is not an integer, a TypeError will be raised.
• If the provided ASN is outside the valid range of 0 to 4294967295, a ValueError will be raised.

Here's an example of handling errors when looking up an ASN:

from pybgpasn import ASNCatalog

catalog = ASNCatalog()

try:
    asn = "invalid"  # Not an integer
    provider_name = catalog.get_provider_name(asn)
except TypeError as e:
    print(f"Error: {e}")
    # Output: Error: ASN must be an integer

try:
    asn = -1  # Negative ASN
    provider_name = catalog.get_provider_name(asn)
except ValueError as e:
    print(f"Error: {e}")
    # Output: Error: Invalid ASN number

License

pybgpasn is licensed under the MIT License. See the LICENSE file for more information.

Acknowledgments

pybgpasn includes data from the Border Gateway Protocol (BGP) Autonomous System (AS) Numbers registry maintained by the Internet Assigned Numbers Authority (IANA).