oci.oraclecloud.com has no TXT records.
Question and response
Question
dig oci.oraclecloud.com. TXT
Answer
The response has no answer records.
Authority
oci.oraclecloud.com. 300 SOA ns1.p200.dns.oraclecloud.net. hostmaster.oci.oraclecloud.com. 2038788193 3600 900 31536000 1800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0