Find out your current IP address

Would you like to know what is your public IP address ? Whether it's for technical or security reasons, or to resolve blocked access to a site, this page allows you to :

✅ Show your IPv4 address
✅ Show your IPv6 address (if available)
✅ See the host names (reverse DNS) associates
✅ And if necessary : send an IP unblocking request

See my IP address - IPv4 and IPv6

ℹ️ Your IP is your identity on the Internet.
This is the address used to communicate with remote servers, websites, applications and services.

IPv4 and IPv6: why two IP address formats?

IPv4 is the historical format (e.g. 192.0.2.1), which is still in the majority today.
There are approximately 4.3 billion possible IPv4 addresses (2³²). This number is insufficient for the whole world.
IPv6 was introduced in response to this shortage: with 2¹²⁸ possible addresses, This represents approximately :

340 282 366 920 938 463 463 374 607 431 768 211 456 addresses
(yes, that's 340 undecillion 😅)

Thanks to IPv6, each connected device can have a unique address, with no NAT and no growth limit.

What is an rDNS (reverse DNS)?

Le reverse DNS, or rDNS, is the opposite of a classic DNS resolution.
While the DNS (Domain Name System) is used to translate a domain name (e.g. portal.lrob.fr/) into an IP address, rDNS makes it possible to find the domain name associated with an IP address.

For example, the IP 192.0.2.123 could have an rDNS like client-192-0-2-123.dsl.provider.net.

rDNS is often used for :

Identify a remote server or client
Check the legitimacy of an IP in e-mail exchanges (anti-spam)
Facilitating security logs and audits

Please note: not all IPs have an rDNS configured. The absence of a reverse DNS is not a problem in itself, but its presence often provides better visibility and reliability.

Why might your IP be blocked?

At LRob, We constantly monitor the status of hosted services.
In the majority of cases where a user thinks their site is offline, the real cause is as follows:

The user's IP was automatically blocked by server security.

It can happen:

After several failed connection attempts
Following unusual or automated requests
Sometimes even due to incorrect configuration of a plugin or client-side software.

This is what we call a false positive.
Blocking is rare, but it is the most frequent support request we receive.

Before: a complicated process

It required :

Redirect the user to a third-party site to find out their IP address
Ask him to copy the information cleanly (not as a screenshot... 😬)
Analyse data manually to unblock access

The result: wasted time, mistakes and frustration for everyone.

Now: a complete, in-house tool

We have developed a simple solution, available right here on our website, which allows you to :

Know your IP addresses immediately
Send them to our team in one click using a form
Unblock your IP automatically, after verification

All with a Integrated captcha to prevent automated abuse.

A technical challenge: detecting IPv4 and IPv6

An important technical detail: when a user visits a page, the server only sees one IP, depending on its network configuration (generally IPv6 if available).

To get around this, we have set up an original architecture:

Two sub-domains :
- ipv4.lrob.net (forced in IPv4 only)
- ipv6.lrob.net (forced in IPv6 only)
Each returns the IP address seen, via a JSON request
The main page combines the two to show you your two IPs if available

🎯 All without using third-party services, 100 % hosted on our infrastructure, respectful of your privacy.

Who can use this tool?

This tool is available to the public and can be used to :

Our customers who need unlock their access
Other system administrators or webmasters
Anyone interested in seeing what its real IP on the Internet is

Access the tool

Go to the LRob IP detection and unblocking page

💡 And if you're a hosting professional or freelancer, don't hesitate to use it for your own customers. The tool is freely accessible.

What is my public IP address? (IPv4 / IPv6 + unblocking)