DASH sees a large route leak in Singapore

September 13, 2023

In june of this year, the Dashboard for AS Health or DASH, a service operated by APNIC saw a leak of approximately 260,000 BGP routes from a vantage point in Singapore, and sent alerts to around 90 subscribers to our routing mis-alignment notification service which is part of DASH.

BGP is the state of announcements made and heard worldwide, calculated by every BGP speaker for themselves and although its globally connected and represents “the same” network, not everyone sees all things, as a result of filtering and configuration differences around the globe. BGP also should align with two external information systems, the older Internet Routing Registry (IRR) system which uses a notation called RPSL to represent routing policy data, including the “route” object, and Resource Public Key Infrastructure or RPKI, which represents the origin-AS (in BGP, who originates a given prefix) in a cryptographically signed objected called a ROA. The BGP prefix and origin (the route) should align with whats in an IRR route object and an RPKI ROA, but sometimes these disagree. Thats what DASH is designed to do: tell you when these three information sources fall out of alignment.

I discussed this incident, and the APNIC Information Product family (DASH, a collaboration with RIPE NCC called NetOX, and the delegation statistics portal called REX) with Rafael Cintra, the product manager of these systems, and with Dave Phelan who works in the APNIC Academy and has a background in Network Routing Operations.

You can find the APNIC Information products here: (note that the DASH service needs a MyAPNIC login to be used)

And you can read about the Information Products family in these blog articles: