mikaela.github.io/_matrix/federation/v1/query/directory

{
  "room_id": "!fGtopoZuCySnTsSdsU:matrix.org",
  "servers": [
    "pikaviestin.fi",
    "matrix.org",
    "dendrite.matrix.org",
    "jae.fi",
    "the-apothecary.club"
  ]
}