fetch invalid roas from bgpstuff.net and check the reason why they are invalid using ripestat and also do AS lookup using Cymru whois for Country Code
Sample Output from 2021-02-25
- 860 PT 80.243.92.0/23 invalid_length
- 210007 ES 195.69.253.0/24 invalid_length
- 263538 BR 2804:1390:1040::/44 invalid_length
- 263538 BR 2804:1390:40::/44 invalid_length
- 213106 DE 2001:bf7:1350::/44 invalid_asn
- 45758 TH 2403:6200:7103::/48 invalid_length
- 45758 TH 2403:6200:7104::/48 invalid_length