Further to my previous message [TD 25:64] about one-call centers, the FCC has designated 811 as a universal one-call number. All available N11 codes are now in use in the United States, either by FCC assignment or by what the FCC calls "traditional usage":
211 Community Information and Referral Services
311 Non-Emergency Police and Other Governmental Services
411 Local Directory Assistance
511 Traffic and Transportation Information (US); Available for Reassignment (Canada)
611 Repair Service
711 Telecommunications Relay Service (TRS)
811 Access to One Call Services to Protect Pipeline and Utilities from Excavation Damage (US); Available for Reassignment (Canada)
911 Emergency Source: © 2003 NeuStar, Inc.
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According to the Dig Safely website, no one-call center has started using 811 yet.
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According to the FCC order, it must be fully implemented by April 2007.
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Neal McLain