Protect the Internet
Mutually Agreed Norms for Routing Security (MANRS) is a global initiative that helps reduce the most common routing threats.




The Latest
Beyond Their Intended Scope: DDoS Mitigation Leak
Editor’s Note: This is a guest post from Doug Madory (Kentik) originally published on 8 April 2025 at https://www.kentik.com/blog/beyond-their-intended-scope-ddos-mitigation-leak/. Summary In this edition of Beyond Their Intended Scope, we take a look at last week’s BGP leak by a DDoS mitigation company which impacted networks around the world. We look at the impacts in both BGP […]
Approved: MANRS Development Process
Reflecting on “Routing security: fostering continuous improvement” at APRICOT2025
Why Join MANRS?
Every day, routing security incidents affect the Internet and the organizations and people that rely on it. MANRS sets security norms to reduce those incidents.
Participants across four programs

Improve security by preventing attacks and accidents

Join a community committed to a more robust and secure Internet

Lead the industry by inspiring and encouraging other operators
The Observatory
The MANRS Observatory monitors the state of Internet routing security. It aggregates data from multiple sources and projects to help network operators improve the security of their networks. See how your network is doing.
Filtering
Anti-spoofing
Coordination
Routing Information (IRR)
Routing Information (RPKI)
Testimonials
In our hyper-connected world, secure networks are critical to ensuring robust and reliable infrastructure worldwide. Arrcus strongly endorses the MANRS belief that security is a key tenet of the global network architecture - it has been a key guiding principle for us as we have built our ACE platform to support enterprise and service provider customers. Arrcus is proud to support MANRS and the important work being done developing standards to help ensure a more securely connected global internet.
Microsoft takes Internet security seriously and has decided to join the Internet Society's MANRS initiative to increase security for all of our customers on the Internet. Microsoft works extensively with the industry to assist our partners with improving their routing security to ensure the Internet is secure and safe to use.
We agree with the underlying principles of the MANRS initiative and in practice we have always ensured our network complies with the requirements it outlines. A number of recent high-profile cases have reaffirmed the need for such processes and we look forward to the wider adoption of these practices.
Technical Director, Custodian DC Ltd.Saicom consistently push to ensure a clean and stable internet infrastructure for our clients. MANRS allows us to ensure our clients that we take the right steps in securing their routes
Network OperationsMazeda Networks has endeavored to keep up a safe and flexible network, conveying the most refreshed prescribed procedures and, as a National ISP Network, spreading them to its clients so as to get from them a dedication of sending these accepted procedures in their systems also. Holding fast to MANRS activity fortifies this position.
As the provider of a network that connects NZ's researchers, educators, and students to the rest of the world, REANNZ has always taken the security and stability of our members’ networks seriously. MANRS’ pragmatic and straightforward framework for implementing best practice routing security reflects and expands upon our own efforts in this area. We support this initiative and encourage wider adoption of it throughout the Internet community for the benefit of all.
The MANRS IXP Initiative brings together in one place, in an easy to access form, all of the relevant information on routing security best practice for our members. We incorporate the MANRS material into our training courses and guidance, to provide our members with a consistent approach to routing security and BGP policy best practice.
Senior Network Engineer, LONAPWe believe the security, stability, and resiliency of the Internet operation can be improved via distributed and shared responsibilities as documented in MANRS. As one of the largest academic networks in the world, CERNET is committed to the MANRS actions.
Deputy Director, CERNETColoClue strongly believes in making the internet better by implementing security features sooner rather than later. We've been doing strict filtering based on IRR data for a long time; when RPKI became a thing, we soon implemented that too. We believe that the objectives of MANRS perfectly align with the goals of ColoClue, so it only makes sense to join!
For Internet Exchange Services Yucatan (IXSY) the adoption of standards and best practices for routing security has big importance, because IXPs are key infrastructure and play an important role in the Internet ecosystem. The adoption of MANRS in IXSY helps in strengthening the routing security on the Internet.
Director, Internet Exchange Services YucatanPIT Bolivia’s vision is to be a point of reference in the digital environment that contributes to the improvement of the Internet in Bolivia. For this it is vital to implement good international practices to ensure routing between the different Internet agents in Bolivia that exchange traffic.
General manager, PIT BoliviaWe believe that Internet is a community where everyone has to contribute to have a more secure Internet infrastructure. We are committed to making our part for a global routing infrastructure more robust and secure.