---
description: The descriptions below detail the fields available for nel_reports.
title: NEL reports
image: https://developers.cloudflare.com/og-docs.png
---

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# NEL reports

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/logs/logpush/logpush-job/datasets/zone/nel%5Freports/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

The descriptions below detail the fields available for `nel_reports`.

## ClientIPASN

Type: `int`

Client ASN.

## ClientIPASNDescription

Type: `string`

Client ASN description.

## ClientIPCountry

Type: `string`

Client country.

## LastKnownGoodColoCode

Type: `string`

IATA airport code of colo client connected to.

## Phase

Type: `string`

The phase of connection the error occurred in; _dns_ | _connection_ | _application_ | _unknown_.

## Timestamp

Type: `int or string`

Timestamp for error report.

## Type

Type: `string`

The type of error in the phase.

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