Suicide and Crisis Lifeline
988 (Suicide and Crisis Lifeline in the United States, or Suicide Crisis Helpline in Canada, and formerly known as the National Suicide Prevention Lifeline), sometimes written 9-8-8, is a suicide prevention and crisis help line to a network of a large number of crisis centers in the United States and Canada that provide 24/7 service to trained crisis counselors, via a toll-free hotline and with the three-digit short code telephone number 9-8-8. In the United States, the 988 short code was implemented in July 2022 as an addition to its predecessor, a 1-800 number that existed since 2005.
Source: Wikipedia — Suicide and Crisis Lifeline (CC BY-SA 4.0)