Plain-text copy of the RFC series, pulled from the RFC Editor rsync service once a week. No search, no scripts, no tracking — just files.
rfc-index.txt full index of published RFCs rfcNNNN.txt individual documents, e.g. rfc2616.txt bcp/ Best Current Practice sub-series std/ Internet Standard sub-series fyi/ For Your Information sub-series
Canonical source: www.rfc-editor.org. If a file here is older than a week, the upstream has most likely not changed.