Use !anycast-routes6 to search for Anycast IP addresses in an IPv6 Address Block.

!anycast-routes6 takes as an argument an IPv6 address block in CIDR notation.

Usually, you can also use !anycast-routes instead of !anycast-routes6

Examples:
!anycast-routes6 2000::/12
!anycast-routes6 2001:800::/21
!anycast-routes6 2400::/10
!anycast-routes6 2600::/14
!anycast-routes6 2800::/10
!anycast-routes6 2a00::/15
!anycast-routes6 2a00::/17
!anycast-routes 2001:43f8::0/18
!anycast-routes 2602:f000::0/20
!anycast-routes 2a00::/10


See also:
!help !anycast-routes
!help !bgp
!anycast-routes4
!prefixes
!peers
!asn


Note:
For the most part, Anycast IP addresses are assigned to hosts in distinct physical locations and BGP-announced by multiple distinct Internet Autonomous Systems (AS). A host trying to reach an anycast IP address block is directed (by the Internet networking infrastructure) to its "nearest" AS that anounces that IP address block (the AS with the shortest AS-path from his AS).