# Extract part of a log using regex in KQL

**URL:** <https://discuss.elastic.co/t/extract-part-of-a-log-using-regex-in-kql/324677>\
**Category:** Kibana\
**Tags:** kql-kibana-query-language\
**Created:** [February 3, 2023, 4:45pm UTC](https://discuss.elastic.co/t/extract-part-of-a-log-using-regex-in-kql/324677 "2023-02-03T16:45:15Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![dzlabs](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dzlabs/32/116757_2.png) [@dzlabs](https://discuss.elastic.co/u/dzlabs)\
**Post date:** [February 3, 2023, 4:45pm UTC](https://discuss.elastic.co/t/extract-part-of-a-log-using-regex-in-kql/324677/1 "2023-02-03T16:45:15Z")

</div>

I've log messages that looks like this

```auto
07:17:58.211 [Thread.3;] INFO Dispatcher - Message from XXX.XXX.XXX.XXX/PORT not dispatched, reason: blah blah, status=xyz

```

I'm trying to query then visualize the different IP address (XXX.XXX.XXX.XXX) by their count. I tried the following query in KSQL `message: /[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/` but I'm getting this error

```auto
KQLSyntaxError: Expected AND, OR, end of input, whitespace but "{" found.
message: /[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/
---------------^
    at Rt (https://kibana/46336/bundles/plugin/data/kibana/data.plugin.js:1:44634)
    at https://kibana/46336/bundles/plugin/data/kibana/data.plugin.js:1:45216
    at Array.map (<anonymous>)
    at Ct (https://kibana/46336/bundles/plugin/data/kibana/data.plugin.js:1:45192)
    at Ht (https://kibana/46336/bundles/plugin/data/kibana/data.plugin.js:1:47464)
    at search_source_SearchSource.flatten (https://kibana/46336/bundles/plugin/data/kibana/data.plugin.js:1:70012)
    at t.project (https://kibana/46336/bundles/plugin/data/kibana/data.plugin.js:1:62640)
    at t._next (https://kibana/46336/bundles/kbn-ui-shared-deps-npm/kbn-ui-shared-deps-npm.dll.js:370:282405)
    at t.next (https://kibana/46336/bundles/kbn-ui-shared-deps-npm/kbn-ui-shared-deps-npm.dll.js:21:15937)
    at https://kibana/46336/bundles/kbn-ui-shared-deps-npm/kbn-ui-shared-deps-npm.dll.js:423:1265833

```

What is the proper way of querying with regex?

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 3, 2023, 4:45pm UTC](https://discuss.elastic.co/t/extract-part-of-a-log-using-regex-in-kql/324677/2 "2023-03-03T16:45:37Z")

</div>

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