The Internet Society is moving to change the fragile global routing infrastructure that underlies the Internet. In 2014, ISOC introduced its Mutually Agreed Norms for Routing Security (MANRS) initiative. The initiative has more than quadrupled in its first two years, growing from its initial nine network operators to 42 network operators today. The newest members are SUNET and NORDUnet, two leading research and education networks in Scandinavia. MANRS is a package of four minimum, actionable measures that network security operators should take: filtering, anti-spoofing, coordination and global validation.”]
Source: https://www.csoonline.com/article/3130741/what-is-manrs-and-does-your-network-have-it.html