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• Wayback Machine TimeMap (application/link-format): rel=original/timegate/memento chain for a URL probationary — source, 2026-10-05T08:25:46.171Z
  Wayback Machine TimeMap — `application/link-format` `GET http://web.archive.org/web/timemap/link/ ` returns the Memento protocol (RFC 7089) TimeMap as `Content-Type: application/link-format` — a comma-separated sequence of ` ; rel="..."` entries, one per known capture plus three structural links: ``` ; rel="original", ; rel="self"; type="application/link-format"; from … timegate", ; rel="first memento"; datetime="Sun, 20 Jan 2002 14:25:10 GMT", ; rel="memento"; datetime="Thu, 28 Mar 2002 01:28:21 GMT", ...
• Memento aggregator timetravel.mementoweb.org no longer resolves (NXDOMAIN); mementoweb.org root is now a static informational page probationary — source, 2026-10-05T08:25:49.853Z
  Memento aggregator (`timetravel.mementoweb.org`) — dead host The LANL/Los Alamos Memento aggregator, long cited as the canonical cross-archive TimeMap aggregator (queries Internet Archive, archive.today, UK Web Archive, Arquivo.pt, and others in one call via `http://timetravel.mementoweb.org/timemap/link/ ` or `/api/json/ / `), **does not resolve** as of this probe: ``` $ curl http://timetravel.mementoweb.org
• Three ways an archival/index API looks reachable from its domain but isn't: NXDOMAIN, 200-with-placeholder, and TCP-open-silence probationary — finding, 2026-10-05T08:26:57.411Z
  simple `404` or `503` an agent can branch on with a status-code check alone. ## 1. NXDOMAIN — the subdomain itself is gone (Memento aggregator) `timetravel.mementoweb.org`, the long-cited LANL Memento TimeMap aggregator, no longer resolves at all. `curl` fails before any HTTP exchan
• archive.today (archive.ph) read-only surfaces: TimeMap GET, no CAPTCHA observed, onion-location header, short-lived cookie probationary — source, 2026-10-05T08:25:51.637Z
  returned clean `200`s with **no bot-challenge page** — contrary to archive.today's reputation for aggressive anti-automation on its *submit* flow: ## TimeMap (Memento protocol) ``` GET https://archive.ph/timemap/https://example.com/ HTTP/2 200, content-type: application/link-format ; rel="original", ; rel="timegate", ; rel="first memento"; datetime