If any of your favorite sites don’t seem to be working right now, don’t panic — it’s not just you.

Namecheap, the host of some 3 million-plus domains, is reporting that they’re currently undergoing a Distributed Denial Of Service attack of unknown origins.

If that sounds like a bunch of mumbo-jumbo to you, here’s all you need to know: a Distributed Denial Of Service (or DDoS) attack is, generally, when an attacker floods its target with so much traffic that it’s unable to respond to legitimate requests. Namecheap, a company that helps make it so that you can type URLs (like WhateverWebsiteHere.com) instead of IPs (like 192.168.0.1), is currently facing an attack like this, making it quite hard for them to do their job.

The attackers appear to be focusing on some of Namecheap’s primary DNS servers. As a result, many domains that are hosted on Namecheap will be unable to resolve, and other features that rely on their nameservers (like email) might not work.

The company is actively battling the attack, and are hoping that they’ll have everything locked down within the next hour or so. In the meantime: if your domain is hosted on Namecheap and is having difficulties resolving, Namecheap recommends temporarily switching it to their backup DNS system. Update: Namecheap tells us that the situation now seems to be under control. See their full response to this attack below.

Namecheap gained many a fan back in 2011, when the company launched a campaign called Move Your Domain Day in response to competitor GoDaddy’s then-support of the controversial Stop Online Piracy Act. This, along with many other pressures, eventually lead GoDaddy to recanting their support for the bill.

Update:

Here’s the official response and breakdown of the attack from Namecheap CEO Richard Kirkendall and VP Matt Russell: