https://github.com/ephe-meral/asn

IP-to-AS-to-ASname lookup for Elixir
https://github.com/ephe-meral/asn

Last synced: 4 days ago
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IP-to-AS-to-ASname lookup for Elixir

• Host: GitHub
• URL: https://github.com/ephe-meral/asn
• Owner: ephe-meral
• License: wtfpl
• Created: 2016-07-04T11:01:02.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2016-08-10T11:08:39.000Z (about 8 years ago)
• Last Synced: 2024-10-06T18:47:34.845Z (29 days ago)
• Language: Elixir
• Size: 4.87 MB
• Stars: 17
• Watchers: 4
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• freaking_awesome_elixir - Elixir - Can be used to map from IP to AS to ASN. (Networking)
• fucking-awesome-elixir - asn - Can be used to map from IP to AS to ASN. (Networking)
• awesome-elixir - asn - Can be used to map from IP to AS to ASN. (Networking)

README

        
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[![Documentation](https://img.shields.io/badge/docs-hexpm-blue.svg)](http://hexdocs.pm/asn/)

# IP-to-AS-to-ASname lookup

Uses approximately the algorithm and resources described here: https://quaxio.com/bgp/

**We support only IPv4 at this point** (Until someone wants IPv6 and dares to update this :D)

## ASN databases

We use the APNIC files:

- IP-to-AS: http://thyme.apnic.net/current/data-raw-table

- AS-to-ASN: http://thyme.apnic.net/current/data-used-autnums

## setup

In your `mix.exs` file:

```elixir

def application do

  [applications: [:asn]] # simply add asn to your loaded applications

end

def deps do

  [{:asn, ">= 0.1.0"}]

end

```

Note that the initial compilation might take a few more seconds since it compiles the lookup table.

In case you **don't want the application single process solution**, you can also start `ASN.Matcher.start_link` processes by hand and use them through a similat API like the ASN module, just that you will need to pass the matcher process as the first value before the function args.

## usage

Due to the sheer size of the table, the compiler refuses to statically put it into the matcher module within a reasonable amount of time, and with a reasonable usage of memory. That's why we pre-compile the data into erlang-terms in external format and store that, and load it again on demand into a process.

**BEWARE** of wrongly formatted IP addresses! This accepts strings and tuples for IPs and integers for AS IDs, where IP-Strings need to be formatted like 'a.b.c.d' where a-d are integers between 0-255.

```elixir

# standard usage:

ASN.ip_to_asn("8.8.8.8")

# => {:ok, "Google Inc."}

ASN.ip_to_asn({8, 8, 8, 8})

# => {:ok, "Google Inc."}

ASN.ip_to_as("8.8.8.8")

# => {:ok, 15169}

ASN.ip_to_as({8, 8, 8, 8})

# => {:ok, 15169}

ASN.as_to_asn(15169)

# => {:ok, "Google Inc."}

```

## is it any good?

bien sûr.