Nomorobo blocking call outs to land lines

I have a single report of PagerDuty callouts being blocked by nomorobo, which is a “robot smam call management tool used by a number of phone carriers.” PagerDuty may need to take action to get excluded from the nomorobo list. This instance was from PagerDuty Outgoing # 415.212.4459

Has anyone else experienced this?