Precise/Regex Search

Is it because of the "iq_text_base"?

{
  "analyzer": "iq_text_base",
  "text": "2a02:168:2132::2"
}
{
    "tokens": [
        {
            "token": "2a02",
            "start_offset": 0,
            "end_offset": 4,
            "type": "<ALPHANUM>",
            "position": 0
        },
        {
            "token": "168",
            "start_offset": 5,
            "end_offset": 8,
            "type": "<NUM>",
            "position": 1
        },
        {
            "token": "2132",
            "start_offset": 9,
            "end_offset": 13,
            "type": "<NUM>",
            "position": 2
        },
        {
            "token": "2",
            "start_offset": 15,
            "end_offset": 16,
            "type": "<NUM>",
            "position": 3
        }
    ]
}