The IESG has received a request from the Session Initiation Protocol Core WG (sipcore) to consider the following document: - 'A SIP Response Code for Unwanted Calls' <draft-ietf-sipcore-status-unwanted-04.txt> as Proposed Standard The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2017-03-21. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract This document defines the 666 (Unwanted) SIP response code, allowing called parties to indicate that the call or message was unwanted. SIP entities may use this information to adjust how future calls from this calling party are handled for the called party or more broadly. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-sipcore-status-unwanted/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-ietf-sipcore-status-unwanted/ballot/ No IPR declarations have been submitted directly on this I-D.