Area code 000
Appearance
Area code 000 is not a valid United States area code. This code may show up as part of a number on a caller id system when receiving telemarketer outbound calls or from VoIP services, such as Skype or Vonage, because there is no requirement that caller id data represent a valid telephone number.[1]
References
- ^ Nielson, Julie - AT&T Operator. Personal interview. 10 April 2007.[unreliable source?]