The following command returns no error but no ptr record seems to be created: slcli dns record-add domain001.com 233 ptr server0001.damain001.com. 233 is the last octet in the IP address. The ongoing thread in the softlayer forums is located here: https://forums.softlayer.com/forum/softlayer-developer-network/general-discussion/84322-error-when-attempting-to-use-slcli-to-create-a-reverse-pointer-dns-entry