AS-Stats/contrib/generate-asinfo.py

#!/usr/bin/env python
# (echo begin; echo verbose; for i in `seq 1 65535`; do echo "AS$i"; done; echo end) | netcat whois.cymru.com 43 | ./generate-asinfo.py > asinfo.txt

import sys

for line in sys.stdin:
    try:
        asn,country,_,_,data = [_.strip() for _ in line.split('|')]
    except ValueError:
        continue

    try:
        data,country = data.rsplit(',',1)
        country = country.strip()
    except:
        data = data

    if data == '-Private Use AS-':
        data = 'Private Use AS'

    try:
        macro,name = data.split(' ',1)
    except:
        macro = data
        name = data

    if not (macro.count('-') or macro.upper() == macro or name.startswith('- ')) or macro == 'UK':
        macro = 'UNSPECIFIED'
        name = data

    if name.startswith('- '):
        name = name[2:]

    print("%s\t%s\t%s,%s\t%s" % (asn,macro,name,country,country))