In the announced prefixes section, you can see:
Prefix AS Path Aggregation Suggestion 22.214.171.124/17 6939 6762 48237 35819 50999 126.96.36.199/18 4777 2497 3356 50999 188.8.131.52/21 6939 1299 3356 50999 + Announce - aggregate of 184.108.40.206/22 (6939 1299 3356 50999) and 220.127.116.11/22 (6939 1299 3356 50999)
So every row is a group of IP addresses from this AS (autonomous system). If someone from outside wants to communicate with an IP from that group, it needs to go enter that AS.
Now, so far I thought every AS consists of BGP routers. If they want to communicate with a different AS, they look in the routing table and check the AS PATH attribute of the specified subnet. This way, they know which AS to talk to to reach the destination AS.
With this in mind, what's the meaning of AS Path attribute from the quote above? It looks like the AS stores information about how others can reach it, and 'broadcasts' that information to others, using BGP protocol. Is that right?
By the way, some of the addresses on that site are marked green or red. Any idea what does that mean?