BGP communities

We use BGP communities to control the traffic flow within our network. In addition to that we offer some BGP Communites to be used by our customers.

Informational communities

The following communities include information about the routes from our network.

IRR validation

community description
56381:10101 Route got validated against IRR data and is valid.
56381:10102 Route got validated against IRR data and is not valid.
56381:10103 Route got not valid against IRR data and is therefore not classified.

RPKI validation

community description
56381:10201 Route got validated against RPKI data and is valid.
56381:10202 Route got validated against RPKI data and is not valid.
56381:10203 Route got not valid against RPKI data and is therefore not classified.

Action communities

The following action communities can be used to control the behavior of our network. These communites can only be used by our customers.

Well-known communities

The following well-known communities are accepted by our network.

community description
do-not-export Do not announce prefix to any eBGP peer, but distribute the prefix within AS56381.
do-not-distribute Do not announce prefix to any eBGP peer, but distribute the prefix within AS56381.
65535:666 RFC7999, will be rewriten to 56381:666 internally

Blackholing

We accept and redistribute the following blackholing-community to our upstreams. Blackholing is only allowed for IPv4 /32 and IPv6 /128 routes.

community description
56381:666 blackhole traffic to prefix

Transit

Control the announcement of your subnets to our transits.

Telekom

community description
56381:30100 Do not announce subnet to AS3320.

GTT

community description
56381:30200 Do not announce subnet to AS3257.

RETN

community description
56381:30300 Do not announce subnet to AS9002.

Internet Exchange Point

Control the announcement of your subnets to our IXPs.

KleyReX

community description
56381:40100 Do not announce subnet to the KleyReX Route-Server.

DE-CIX FRA

community description
56381:40200 Do not announce subnet to the DE-CIX FRA Route-Server.

NL-ix

community description
56381:40300 Do not announce subnet to the NL-ix Route-Server.