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 86e7d4355a00f275822f4fe0cc191edd.36238ff8965986a162c02a4e6cb70ecd.55eyfwc55lv4yl35neq6.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .
Instead, try zone transfer on sectigo.com .