automatic reverse and forwarding zones

[Marco Moock]

Hello,

how do ISPs automatically create the reverse and forwaring zones for
their customers IP pools?

For example one of their clients has the IP 2001:db::3.

Its reverse zone
3.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.b.d.0.0.1.0.0.2.ip6.arpa
includes a PTR pointing to
3.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.b.d.0.0.1.0.0.2.isp.example.org

This has an AAAA record of 2001:db::3.

Is it possible to let bind create that automatically for certain zones?

-- 
kind regards
Marco