Looking for a Level 3 Routing Registry contact

Please contact me off list if you can help me get in touch with an actual person that can clear out old entries in the Level 3 routing registry. I can't do jack with the automated and the contacts that put them in are non responsive for clearing out their years old mess. Thanks. This communication is the property of CenturyLink and may contain confidential or privileged information. Unauthorized use of this communication is strictly prohibited and may be unlawful. If you have received this communication in error, please immediately notify the sender by reply e-mail and destroy all copies of the communication and any attachments.