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http://www.rfc-editor.org/rfc/rfc0870.txt
RFC 0870: Assigned numbers, J.K. Reynolds, J. Postel
1983-10-01T23:00:00-00:00
This RFC documents the list of numbers assigned for networks, protocols, etc. Obsoletes RFCs 820, 790, 776, 770, 762, 758, 755, 750, 739, 604.