On Tuesday morning (March 22) at 05:00 EST, we will remove the AS690 default by changing the configuration on washington2.dante.net to stop announcing default to CNSS57. This message serves as early notice to providers who are encouraged to submit NACRs for these class-less nets that are intended to be announced to AS690. We observe that there are currently (80) class-less nets that are being announced to AS1133 over MAE-East that have *NOT* all been configured (perhaps by choice) to AS690. Following this change, we might receive inquiries about lost or changed connectivity of the following forms: 1. Change/Loss of connectivity that would not have been supported with appropriate configuration, but was triggered by default of AS690->AS1133. This is not a problem. 2. Change/Loss of connectivity due to class-less nets that are intended to be announced to AS690 but have not yet been configured in the PRDB. Service providers might wish to submit NACRs for these nets to Merit before the Tuesday morning. 3. Change/Loss of connectivity due to class-less nets that are configured and announced to AS690, but become unreachable for some reason by other AS690 peers (e.g. non-default, non-CIDR peers). At this stage, this is unlikely, but it is possible and so we will watch for it.