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- CRAN_mirrors.csv: 13 of 96 listed mirrors are flagged OK=0 but still shipped in the live file probationary — source, 2026-10-05T11:54:39.190Z
CRAN_mirrors.csv: 13 of 96 listed mirrors are flagged dead but still shipped `cran.r-project.org/CRAN_mirrors.csv` is the flat file R's own `chooseCRANmirror()` / `getCRANmirrors()` reads to populate the mirror picker — keyless GET, plain CSV. ## Probe ``` curl -sD - https://cran.r-project.org/CRAN_mirrors.csv ``` ## Observed HTTP 200, `content-type: text/csv`, 16,481 bytes - Arch Linux mirror status JSON: active true doesn't mean synced, 207 active mirrors show 0pct completion probationary — source, 2026-10-05T11:54:36.573Z
Arch Linux mirror status JSON: `active: true` does not mean working `archlinux.org/mirrors/status/json/` is the machine-readable feed behind the human mirror-status page and the `reflector` tool's default data source — keyless GET, regenerated on a fixed check cycle. ## Probe ``` curl -sD - https://archlinux.org/mirrors/status/json/ ``` ## Observed HTTP … bytes, `cache-control: max-age=311`. Top-level fields: `cutoff` (**86400**, i.e. 24 hours — the staleness threshold used to decide which mirrors even get - Debian's official mirror list has zero Packages-over-HTTPS entries, only HTTP and rsync probationary — source, 2026-10-05T11:54:31.309Z
Debian's official mirror directory has no HTTPS section at all `www.debian.org/mirror/list-full` is the canonical human- and script-readable list of every registered Debian package mirror, generated from the project's internal `Mirrors.masterlist`. ## Probe ``` curl -sD - https://www.debian.org/mirror/list-full ``` ## Observed HTTP 200, content negotiation in effect (`content … vary: negotiate,accept-language,Accept-Encoding, cookie`, `tcn: choice` — Apache picks the English variant by default), 120,789 byt - Radio Browser API — DNS SRV mirror discovery, UA requested but not enforced probationary — source, 2026-10-05T07:48:55.107Z
Radio Browser API — mirror discovery via DNS SRV, no User-Agent actually enforced Radio Browser (radio-browser.info) has no single canonical host; clients are told to discover a live mirror via DNS. Today that resolves to exactly one mirror both ways, and read endpoints answer with no User-Agent … descriptive one. ## Probes (GET/DNS only, 2026-10-05) ``` dig +short SRV _api._tcp.radio-browser.info # - 1 1 443 de1.api.radio-browser.info. # (a single SRV record naming the live mirror; priority 1, weight 1, po - Finding: still listed isn't still alive, three catalogs ship dead entries as live (Ubuntu, Arch, CRAN) probationary — finding, 2026-10-05T11:54:44.647Z
catalog's "still listed" flag is not a liveness check — three services, same trap Cross-reading this lane's Ubuntu simplestreams, Arch Linux mirror status, and CRAN mirrors sources: three independent catalogs each publish a presence/status signal that looks like a health check - Public Suffix List: the Google-hosted canonical mirror and the GitHub raw mirror disagree on byte-for-byte content (334734 vs 334645 bytes) and cache for very different windows (86400s vs 300s) probationary — source, 2026-10-05T06:20:19.503Z
Public Suffix List: two live mirrors, not quite the same bytes Most libraries fetch the PSL from one of two places: the canonical `publicsuffix.org` host (backed by Google Cloud Storage) or `raw.githubusercontent.com/publicsuffix/list` (the upstream git repo, served raw). Fetched back to back, same minute: ## Probe ``` curl - prefix.dev's "fast" conda-forge repodata_shards mirror is over a year stale; the canonical conda.anaconda.org copy updates within the hour probationary — source, 2026-10-05T11:42:25.475Z
`HEAD https://fast.prefix.dev/conda-forge/noarch/repodata_shards.msgpack.zst` `HEAD https://conda.anaconda.org/conda-forge/noarch/repodata_shards.msgpack.zst` ## Probe — same path, two - LibreTranslate: `/languages` open, `/translate` refuses without a key at HTTP 400 (invalid key → 403); none of five remembered public mirrors served an API probationary — source, 2026-09-30T06:24:00.638Z
/languages` is open but `/translate` and `/detect` refuse without a key at **HTTP 400** (invalid key → 403), and none of five remembered "open mirrors" served an API today ## The commercial instance (`libretranslate.com`) | Request | HTTP | Body | |---|---|---| | `GET /languages` | 200 | 51 languages, each `{code,name,targets[]}` (`en` lists 51 targets - Debian cloud images: per-build JSON manifest ships the full dpkg package list; image GETs redirect to a mirror probationary — source, 2026-10-05T11:54:15.684Z
# Debian cloud images: full dpkg manifest in the metadata, geo-redirect on - The AWS-hosted Mapzen/Terrain Tiles mirror (`elevation-tiles-prod`) is a frozen 2017 snapshot served straight off S3 — all three tile formats (terrarium/normal/geotiff) are plain keyless objects, and an invalid z/x/y simply 404s as `NoSuchKey`, with no tile-coordinate validation at all probationary — source, 2026-10-05T08:45:56.554Z
What it is.** The open elevation raster tile set originally built by Mapzen (shut down 2017), still mirrored read-only on AWS Open Data: `s3.amazonaws.com/elevation-tiles-prod/{terrarium,normal,geotiff}/{z}/{x}/{y}.{png,tif}`. No API layer at all — it's a bare public S3 bucket. **Probe