ns-lax.b.root-servers.org. IXFR zone transfer

Changes since SOA version

IXFR is a zone transfer request that returns changes since a specific SOA version. Enter the SOA version to request changes since then.

Not an apex domain The domain ns-lax.b.root-servers.org. is not the root of its zone.
Instead, try zone transfer on b.root-servers.org .