The recipe also includes an alternative script that uses a downloaded file, but uses pyasn instead of pyipmeta. I have kept this one as is, arguments for both scripts should be the same. The only changes I made were to the README and ip_asn_pyipmeta.py.

@richmass1 please replicate the https://github.com/CAIDA/catalog-data/tree/724-fix-recipe-ipv4-to-asn/sources/recipe/map_ipv4_address_to_asn

• you should understand what the recipe is trying to do
• run the code

What the code does: produce a mapping from a provided list of IPv4 addresses to their associated ASNs
I was able to run the code. Some things I noticed:

• In the README, it says the pfx2as file should be specified with the -f flag, but in the code it's -p
• The link for sample IPs prompts me for a username and password; perhaps a more accessible example should be provided
• The code does not print the mapping (it looks like it's not supposed to)

• In the README, it says the pfx2as file should be specified with the -f flag, but in the code it's -p

Please update change the README to match the code.

• The link for sample IPs prompts me for a username and password; perhaps a more accessible example should be provided

ip link worked for me?

• The code does not print the mapping (it looks like it's not supposed to)
  please update the code so it prints out the mapping, or change the README so it says "How to load a mapping between IP and ASN into memory.

I changed the README and also uncommented the print statement. The sample IP link still prompts me for a username and password, but if I change domain name from data.caida.org to publicdata.caida.org it works. Should I put that in the README?