Via the Outages list, info from the Boston police department followed about an hour later by a "it's fixed" message.
Quotation from original posts follows
"I have a report this 3pm Tue, hour from the authenticated FB page of the Boston PD,
that 9-1-1 service is out statewide in Mass; they're handling it as a Code 2 AHOD;
flag down a cruiser if you need help.
"""
9-11 is currently down statewide.
If you are experiencing an emergency please pull a Fire Box.
If you need assistance, please reach out to your local Boston Police District station.
Boston Police will be patrolling with their blue lights activated for high visibility.
Please approach an officer if you need assistance:
Downtown A-1: (617) 343-4240
Charlestown A-15: (617) 343-4888
East Boston A-7: (617) 343-4220
Roxbury B-2: (617) 343-4270
Mattapan B-3: (617) 343-4700
South Boston C-6: (617) 343-4730
Dorchester C-11: (617) 343-4330
South End D-4: (617) 343-4250
Allston/Brighton D-14: (617) 343-4260
Roslindale/ West Roxbury E-5: (617) 343-4560
Jamaica Plain E-13: (617) 343-5630
Hyde Park E-18: (617) 343-5600
------------------------
911 Operating System is back up and running
CANCEL 9-11 is currently down statewide.
If you are experiencing an emergency please pull a Fire Box.
If you need assistance, please reach out to your local Boston Police District station.
Boston Police will be patrolling with their blue lights activated for high visibility.
Please approach an officer if you need assistance:
Downtown A-1: (617) 343-4240
Charlestown A-15: (617) 343-4888
East Boston A-7: (617) 343-4220
Roxbury B-2: (617) 343-4270
Mattapan B-3: (617) 343-4700
South Boston C-6: (617) 343-4730
Dorchester C-11: (617) 343-4330
South End D-4: (617) 343-4250
Allston/Brighton D-14: (617) 343-4260
Roslindale/ West Roxbury E-5: (617) 343-4560
Jamaica Plain E-13: (617) 343-5630
Hyde Park E-18: (617) 343-5600