311 may refer to: *

311 (number) 311 (three hundred ndeleven) is the natural number following 310 and preceding 312. In mathematics 311 is the 64th prime; a twin prime with 313; an irregular prime; an emirp, an Eisenstein prime with no imaginary part and real part of the for ...

, a natural number *

AD 311 __NOTOC__ Year 311 ( CCCXI) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Valerius and Maximinus (or, less frequently, year 1064 '' ...

, a year of the Julian calendar, in the fourth century AD *

311 BC __NOTOC__ Year 311 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Brutus and Barbula (or, less frequently, year 443 ''Ab urbe condita''). The denomination 311 BC for this year has been ...

, a year of the pre-Julian Roman calendar *

311 (band) 311 (pronounced "three eleven") is an American rock band from Omaha, Nebraska. The band was formed in 1988 by vocalist and guitarist Nick Hexum, lead guitarist Jim Watson, bassist Aaron "P-Nut" Wills, and drummer Chad Sexton. Watson was repla ...

, an American band ** ''311'' (album), band 311's self-titled album *

311 (DSM-IV) Depressive Disorder Not Otherwise Specified (DD-NOS) is designated by the code 311 in the DSM-IV for depressive disorders that are impairing but do not fit any of the officially specified diagnoses. According to the DSM-IV, DD-NOS encompasses "an ...

, DSM-IV code for "Depressive Disorder Not Otherwise Specified" *

311 Boyz The 311 Boyz was a teen gang in Las Vegas, Nevada, estimated at 140 members, who beginning in the summer of 2003 committed or were suspected of a number of violent acts. In 2003, the gang consisted mostly of young males who attended Centennial ...

, a teen gang in Las Vegas, Nevada *

3-1-1 3-1-1 is a special telephone number supported in many communities in Canada and the United States. The number provides access to non-emergency municipal services. The number format follows the N11 code for a group of short, special-purpose local ...

, the telephone number of local information service operated by some local governments in the United States and Canada *

3-1-1 for Carry-Ons A number of security measures were taken in response to the 2006 transatlantic aircraft plot. United Kingdom Following the raids, the terror alert level was raised by Britain's Joint Terrorist Analysis Centre on 10 August 2006 from 'severe' to ...

, a procedure enacted by the United States Transportation Security Administration *

311 earthquake 311 may refer to: * 311 (number), a natural number * AD 311, a year of the Julian calendar, in the fourth century AD * 311 BC, a year of the pre-Julian Roman calendar * 311 (band), an American band ** ''311'' (album), band 311's self-titled album ...

, the 2011 Tōhoku earthquake and tsunami off Japan * 311, the area code of a common

fictitious telephone number Ranges for fictitious telephone numbers are common in most telephone numbering plans. One of the main reasons these ranges exist is to avoid accidentally using real phone numbers in movies and television programs because of viewers frequently calli ...

(311-555-2368) used in early Bell System ads and in fiction

See also