cerf.cs.umd.edu
===============

cerf.cs.umd.edu resolves but answers nothing. Address history, reachability and DNS status, collected hourly and probed every six hours.

Changes (/)  ·  Trackers (/trackers)  ·  Networks (/networks)  ·  Lists (/lists)

Status
------

Uptime and the per-address timelines are in /api/trackers/cerf.cs.umd.edu.

  Answers        never answered
  DNS            ok
  Source         file:list.txt
  Added          2026-08-16
  Last resolved  2026-09-16 09:54:47Z
  Last probed    2026-09-16 05:36:51Z
  Last answered  never
  Collection     stopped; the history stays

Tracker protocol
----------------

Whether the tracker answers, checked per address.

  Endpoint  Address       Answers  Software  Detail                    Since
  --------  ------------  -------  --------  ------------------------  --------------------
  udp:8000  128.8.130.86  dead     -         read: connection refused  2026-08-17 09:13:04Z

Address history
---------------

  Address       State   First seen            Last seen             Network
  ------------  ------  --------------------  --------------------  ---------------------------
  128.8.130.86  active  2026-08-16 15:23:59Z  2026-09-16 09:54:47Z  AS27 University of Maryland

Change log
----------

  When                  Change
  --------------------  ---------------------------------------------------------------------------------------
  2026-09-16 09:54:51Z  * retired — resolves, but no probe has answered in 30 days
  2026-08-17 09:13:04Z  v stopped answering — 0 of 1 endpoints answer: udp:8000 dead (read: connection refused)
  2026-08-16 15:23:59Z  ! unchecked -> ok
  2026-08-16 15:23:59Z  + 128.8.130.86
  2026-08-16 15:23:26Z  * added (file:list.txt)

Plain text: add ?format=txt to any page, or send an Accept header without text/html.
Announce lists (/api/list)
JSON API (/api/trackers)
Source (https://github.com/pawal/torrent-tracker)