Filtering
Help prevent incorrect routing information from being announced to neighbouring networks.
Our network
Responsible routing, built into the network.
39T connectivity is supported by 39 Networks and autonomous system AS34979, which is represented in the MANRS Network Operators programme.
MANRSMutually Agreed Norms for Routing Security
- Network operator: 39 Networks
- Autonomous system: AS34979
- Programme: Network Operators
- Area served: Great Britain
Why routing security matters
The Internet depends on networks exchanging trustworthy directions.
Internet routing tells traffic which networks and paths to use. Incorrect or malicious routing information can contribute to outages, diverted traffic and wider instability. MANRS turns recognised operational good practice into a shared set of actions for network operators.
Anti-spoofing
Use source-address validation to reduce traffic sent with forged source IP addresses.
Coordination
Maintain accessible, current contact information so network operators can respond to incidents.
Global validation
Publish routing and number-resource information so other networks can validate announcements.
What this means for customers
A public commitment to responsible network operation.
The MANRS record for AS34979 provides public evidence of a commitment to recognised routing-security actions. It supports 39T’s wider approach of considering security at the internet edge, across the managed connection and inside the customer premises.
- Connectivity backed by experienced network operators
- Routing practices designed to reduce common Internet threats
- Published operational information for industry coordination
- A security approach that extends beyond the local firewall
Network operator
39 Networks
- ASN
- AS34979
- MANRS programme
- Network Operators
- Official record
- View participant page ↗
Clear, accurate claims
Participation is a commitment—not an absolute guarantee.
MANRS helps improve routing security through collective action. It does not mean that every Internet outage, third-party route leak or cyberattack is impossible. 39T therefore combines responsible upstream network operation with resilient service design, managed gateways, monitoring and practical customer support.
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Request a connectivity reviewFrequently asked questions
About 39 Networks, MANRS and AS34979.
What is MANRS?
MANRS stands for Mutually Agreed Norms for Routing Security. It is a global initiative that defines practical actions network operators can take to improve the security and resilience of Internet routing.
Is MANRS a guarantee that outages cannot happen?
No. MANRS participation demonstrates implementation of recognised routing-security actions and a commitment to responsible operation, but no network standard can guarantee that every outage or Internet routing incident will be prevented.
Who operates the network supporting 39T?
39 Networks operates AS34979 and provides the network engineering capability supporting 39T connectivity. AS34979 is represented in the MANRS Network Operators programme for Great Britain.