BGP Communities
BGP Community Catalog
This page lists all BGP communities supported by our network (AS 212895).
Communities allow you to influence how your routes are handled — from traffic engineering
and prepending to blackhole protection. Standard communities use the format
ASN:Value, while Large Communities use ASN:Function:Parameter.
Informational
Communities attached by our network to indicate where and how a prefix was learned. These are read-only and cannot be set by customers.
| Community | Name | Type | Category | Description | Customer Actionable |
|---|---|---|---|---|---|
212895:200:1
e.g. 212895:200:1 |
Learned in Europe | Large | Informational | Prefix was learned at a European point of presence. | Read-only |
212895:200:2
e.g. 212895:200:2 |
Learned in North America | Large | Informational | Prefix was learned at a North American point of presence. | Read-only |
212895:200:3
e.g. 212895:200:3 |
Learned in Asia Pacific | Large | Informational | Prefix was learned at an Asia-Pacific point of presence. | Read-only |
Traffic Engineering
Communities that allow customers to influence how their routes are advertised to peers and upstreams, including AS-path prepending.
| Community | Name | Type | Category | Description | Customer Actionable |
|---|---|---|---|---|---|
212895:1:*
e.g. 212895:1:64512 |
Prepend 1x to Peer | Large | AS-Path Prepend |
Prepend our ASN once when announcing to a specific peer.
Parameter: Target Peer ASN |
Yes |
212895:2:*
e.g. 212895:2:64512 |
Prepend 2x to Peer | Large | AS-Path Prepend |
Prepend our ASN twice when announcing to a specific peer.
Parameter: Target Peer ASN |
Yes |
212895:3:*
e.g. 212895:3:64512 |
Prepend 3x to Peer | Large | AS-Path Prepend |
Prepend our ASN three times when announcing to a specific peer.
Parameter: Target Peer ASN |
Yes |
212895:300:50
e.g. 212895:300:50 |
Set Local Preference to 50 (Backup) | Large | Local Preference | Lower local preference to make this a backup path. | Yes |
212895:300:200
e.g. 212895:300:200 |
Set Local Preference to 200 (Preferred) | Large | Local Preference | Raise local preference to make this the preferred path. | Yes |
Blackhole / Security
Communities for remotely triggered blackhole routing (RTBH). Use these to instruct our network to discard traffic to a specific prefix during DDoS attacks.
| Community | Name | Type | Category | Description | Customer Actionable |
|---|---|---|---|---|---|
212895:666:0
e.g. 212895:666:0 |
RTBH (Blackhole) | Large | Blackhole / RTBH | Remotely triggered blackhole: discard all traffic to this prefix at network edge. Use for DDoS mitigation. | Yes |
65535:666
e.g. 65535:666 |
RTBH Well-Known (RFC 7999) | Well-Known | Blackhole / RTBH | Well-known blackhole community recognized by most networks. | Yes |
Route Control
Communities to control route propagation, including selective announcement and no-export policies.
| Community | Name | Type | Category | Description | Customer Actionable |
|---|---|---|---|---|---|
212895:0:*
e.g. 212895:0:64512 |
Do Not Announce to Peer | Large | Do Not Announce |
Prevent announcement of this prefix to a specific peer.
Parameter: Target Peer ASN |
Yes |
212895:0:0
e.g. 212895:0:0 |
Do Not Announce to Any Peer | Large | Do Not Announce | Prevent announcement of this prefix to all peers (useful with selective announcements). | Yes |
65535:65281
e.g. 65535:65281 |
No Export (Well-Known) | Well-Known | No Export | Do not export this prefix to external BGP peers (RFC 1997). | Read-only |
65535:0
e.g. 65535:0 |
Graceful Shutdown (RFC 8326) | Well-Known | Graceful Shutdown | Signal planned maintenance. Reduces local preference to minimize traffic loss during shutdown. | Read-only |
About BGP Communities
Standard Communities (RFC 1997)
Format: ASN:Value (16-bit:16-bit)
Used for well-known communities like No-Export (65535:65281) and blackhole routing (65535:666).
Large Communities (RFC 8092)
Format: ASN:Function:Parameter (32-bit:32-bit:32-bit)
Used for prepending, selective announcements, and advanced traffic engineering. The wildcard * means you provide the value (e.g. a target Peer ASN).