Reverse 911

Who can use this service?

Anyone can use this service.

Is there a charge for this service?

This service is provided free of charge.

When and where is this service offered?

This service is available online at anytime. Visit Reverse 911 to register your number. 

Frequently Asked Questions

Can I add more than one cell phone number to my address?

Use the Self-Registration Portal to add cell phones to your actual address. The system will not accept Post Office boxes; it must be a real street address. 

Do you already have my phone number?
If you have conventional land-line service to your home or office, even if it is unlisted, your number is automatically in the Reverse 911 database.
I have call screening to discourage telemarketers. Will I receive Reverse 911?
Perhaps - if your system simply requires a valid Caller ID, our Reverse 911 call will get through. However, in the event of a natural disaster or other emergency, you should disable your blocking. 
I live in a remote area - sometimes my location is hard to find. What do I do?

The system is geographically-based. Use the Self Registration Portal to increase your chances of being notified properly. 

What do I do if I have problems with registration?

If you have problems with registration you can email Reverse 911 (sh-reverse911@co.slo.ca.us).

Note: Reverse 911 is simply another tool to assist you in an emergency, but with any system, it may not be 100% effective. Please make sure you monitor the local Emergency Alert System provided by television and radio stations, while also checking the County of San Luis Obispo Office of Emergency Services website for additional information during fires or other natural disasters. 

What if I have Voice Over Internet service?
If you have digital or internet telephone service, check with your phone provider to see if they are "E911 Compliant" and that your account information is correct.
Will my number be shared or sold?
No, your number will only be used to communicate official messages.