# A Host Name That Does Not Resolve

A host name that does not resolve: connection_status is not_resolved and parsed is null.

Source: https://docs.deepinfo.com/reference/lookup/ssl/examples/not-resolved/

Last updated: 2026-09-24

---
`GET https://api.deepinfo.com/v1/lookup/ssl?target=no-such-host.example.com`

A host name that does not resolve: connection_status is not_resolved and parsed is null.

Example 1 of 2 in **Connection Problems** · [SSL Certificate Examples](/reference/lookup/ssl/examples/) · endpoint: [SSL](/reference/lookup/ssl/)

Tags: `param` `target` · `value` `no-such-host.example.com`

Asks for the certificate of `no-such-host.example.com`, a name without an address.

The API cannot connect, so there is no certificate: `connection_status` is `not_resolved`, `parsed` and `certificate` are `null` and `parse_errors` is empty. The HTTP status is still 200.

## Request

| Parameter | In | Value |
|---|---|---|
| `target` | query | `no-such-host.example.com` |

```bash
curl 'https://api.deepinfo.com/v1/lookup/ssl?target=no-such-host.example.com' \
  -H 'apikey: YOUR_API_KEY' \
  -H 'Accept: application/json'
```

## Response

### 200 · OK

`Content-Type: application/json` · `ratelimit-limit: 100` · `ratelimit-remaining: 99` · `ratelimit-reset: 59` · `x-ratelimit-limit-minute: 100` · `x-ratelimit-remaining-minute: 99` · `deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a`

```json
{
  "target": "no-such-host.example.com",
  "port": 443,
  "check_date": "2026-09-24T07:52:01Z",
  "connection_status": "not_resolved",
  "parsed": null,
  "certificate": null,
  "parse_errors": []
}
```

## Related Examples

- [A Port Without TLS](/reference/lookup/ssl/examples/no-tls-on-port/)
- [A Certificate for Another Host Name](/reference/lookup/ssl/examples/wrong-host/)
- [An Untrusted Root](/reference/lookup/ssl/examples/untrusted-root/)
- [A Self-Signed Certificate](/reference/lookup/ssl/examples/self-signed/)
- [An Expired Certificate](/reference/lookup/ssl/examples/expired/)
- [An Elliptic Curve (ECDSA) Key](/reference/lookup/ssl/examples/ecdsa-key/)