1. American Registry for Internet Numbers ARIN WHOIS. http://whois.arin.net/ui/. American Registry for Internet Numbers ARIN WHOIS. http://whois.arin.net/ui/.
2. BGPmon Network Solutions Inc. https://bgpmon.net/. BGPmon Network Solutions Inc. https://bgpmon.net/.
3. BitCanal hijack factory courtesy of Cogent GTT and Level3. https://seclists.org/nanog/2018/Jun/370. BitCanal hijack factory courtesy of Cogent GTT and Level3. https://seclists.org/nanog/2018/Jun/370.
4. CAIDA - AS Rank. http://as-rank.caida.org. CAIDA - AS Rank. http://as-rank.caida.org.
5. Mutually Agreed Norms for Routing Security (MANRS). https://www.manrs.org/. Mutually Agreed Norms for Routing Security (MANRS). https://www.manrs.org/.