---
title: "Hostname Lookup: Resolve a hostname to its IP addresses or…"
canonical: "https://openvibe.tools/tool/hostname"
updated: null
---

# Hostname Lookup: Resolve a hostname to its IP addresses or…

HTML: [Hostname Lookup: Resolve a hostname to its IP addresses or…](https://openvibe.tools/tool/hostname)

# Hostname Lookup

Resolve a hostname to every address it answers with, or go the other way and find the name registered for an IP.

- **Limits** No file upload · Up to 2,000 runs a day
- **Where it runs** Runs on our server; no file is uploaded.
- **Cost** Free, with the limits above. No account needed.

 [Open Hostname Lookup](https://hostname.openvibe.tools/) 

## Where to find it

Every address below opens the same tool. The first address is the one to bookmark and share.

- [hostname.openvibe.tools](https://hostname.openvibe.tools/)Primary

## People also call this

**What it's for:** Resolve a hostname to its IP addresses or find the hostname behind an IP. Forward and reverse lookups in one tool. Instant.

**What trips people up:** **What if the reverse lookup returns nothing?** Reverse records are optional and set by whoever controls the IP block, so many addresses simply have none.

- hostname lookup
- resolve hostname
- host to ip
- ip to hostname
- dns resolve

## Use it from code

- `POST https://openvibe.tools/api/v1/tools/hostname/run`
- No account needed: anonymous calls run on the lowest quota tier; a token with `tools.tool.run` raises it.
- It answers with the result.

~~~~
curl -X POST https://openvibe.tools/api/v1/tools/hostname/run \
  -H 'Content-Type: application/json' \
  -d '{"input":{"target":"example.com"}}'
~~~~

Inputs: [JSON Schema](/api/v1/tools/hostname/schema) · [OpenAPI](/api/v1/openapi.json) · from JavaScript: `tools.run("hostname", …)` in [openvibe-sdk](https://github.com/OpenVibers/OpenVibe.SDK) · [How the API works](/developers)

## Similar tools

[All Network Tools](/network-tools)

[ **Domain & IP Lookup** Look up everything about a domain or IP in one go: DNS *lookup.openvibe.tools*](https://lookup.openvibe.tools/) [ **What Is My IP** See your public IP address, ISP, approximate location and *myip.openvibe.tools*](https://myip.openvibe.tools/) [ **IP Address Lookup** Look up any IP address to see its owner, network, *ip.openvibe.tools*](https://ip.openvibe.tools/) [ **IPv4 Lookup & CIDR Calculator** Look up IPv4 addresses and calculate CIDR subnets: network *ipv4.openvibe.tools*](https://ipv4.openvibe.tools/) [ **IPv6 Lookup** Look up IPv6 addresses, expand or compress notation, and *ipv6.openvibe.tools*](https://ipv6.openvibe.tools/) [ **IP Geolocation** Find the country, region, city, timezone and coordinates *geoip.openvibe.tools*](https://geoip.openvibe.tools/)

## The rest of OpenVibe

5 links

One account works on every site. Open source and community-run.

[**OpenVibe.Live** Live streams, clips and chat](https://openvibe.live/) [**OpenVibe.Community** Pastes, posts and people](https://openvibe.community/) [**OpenVibe.Games** Browser games](https://openvibe.games/) [**OpenVibe.Media** VODs, clips and files](https://openvibe.media/) [**OpenVibe.Network** One account for every site](https://openvibe.network/)