When dialing a phone number from outside the SRJC telephone system, use the following extension prefixes:

SANTA ROSA CAMPUS

• 527
  • 4200-4299
  • 4300-4399
  • 4400-4499
  • 4500-4599
  • 4600-4699
  • 4700-4799
  • 4800-4899
  • 4900-4999
  • 1000 (District Police)
• 524
  • 1500-1599
  • 1600-1699
  • 1700-1799
  • 1800-1899
• 521
  • 6001-6032 - VM extensions only
  • 6000-6099
  • 6900-6999
  • 7800-7899
  • 7900-7999
• 535
  • 3700-3799

PETALUMA CAMPUS

• 778
  • 2400-2499
  • 3600-3699
  • 3900-3999
  • 4100-4199

PUBLIC SAFETY TRAINING CENTER (WINDSOR)

• 836
  • 2900-2999