Auction endpoint 404 error

I’m trying to query auction data using the realm id for area 52, but it’s giving me a 404 error.

{
      "key": {
        "href": "https://us.api.blizzard.com/data/wow/realm/1566?namespace=dynamic-us"
      },
      "name": "Area 52",
      "id": 1566,
      "slug": "area-52"
    },
https://us.api.blizzard.com/data/wow/connected-realm/1566/auctions?namespace=dynamic-us&locale=en_US&access_token=

{“code”:404,“type”:“BLZWEBAPI00000404”,“detail”:“Not Found”}

– Edit
Never mind, I figured out realm id and connected realm id are not the same.

For anyone hitting this via search: Kel'Thuzad ID not working? - #4 by Erorus-11776