CODEWITHSUNDEEP
linuxnetwork-programmingbgp
Percy Kiehn
Percy Kiehn

Reputation: 51

How to get all ip ranges from asn?

I want to get all IP address ranges/blocks from as number. I can search throw google but need to write them manually. I want to get them all at once? Is this possible to get only ip address ranges from websites at once?

Upvotes: 4

Views: 5506

Answers (4)

bswinnerton
bswinnerton

Reputation: 4721

Here's a simple one-liner using IP Guide, which is updated every 8 hours:

curl -sL https://ip.guide/as16509 | jq .routes

Which will return something like:

{
  "v4": [
    "1.44.96.0/24",
    "2.57.12.0/24",
    ...
  ],
  "v6": [
    "2001:4f8:b::/48",
    "2001:4f8:11::/48",
  ]
}

(jq isn't necessary here, but it helps traverse the JSON-based response)

Upvotes: 1

moo
moo

Reputation: 2175

If you don't have whois installed, you can achieve similar using a direct TCP connection to the WHOIS server.

For IPv4:

echo '-i origin AS15169' | nc whois.radb.net 43  | grep '^route:'

For IPv6:

echo '-i origin AS15169' | nc whois.radb.net 43  | grep '^route6:'

Similar can be achieved with Python using the socket lib (in the standard library):

import socket

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.connect(('whois.radb.net', 43))
    s.sendall(b"-i origin AS15169\n")
    result = ''
    while True:
        data = s.recv(16).decode('utf8')
        if not data:
            break
        result += data

result = [i for i in result.split('\n') if i.startswith('route')]
print (result)

Upvotes: 4

zBeeble
zBeeble

Reputation: 354

sh ip bgp regex _<number>$

this shows the advertised netbocks from AS known to the local machine (on a cisco, quagga or FRR router). Some looking glasses will let you make this search (some won't).

Upvotes: -1

Sakib Mahmud
Sakib Mahmud

Reputation: 46

You can use whois servers instead of bgp.he.net or any other websites like this.

whois -h whois.radb.net -- '-i origin AS01' | grep 'route:'

Just run this command on your Linux machine.

Upvotes: 3

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