TL;DR

Unstoppable is not on the Afternic Network. We aim to join soon
You can still list domains managed at Unstoppable on Afternic's network by making an account there and listing each domain.
- Doing this, you'll still get Afternic's lowest commission rates of 15/20% (depending on your Afternic boost settings), as long as you use Afternic's nameservers
Unstoppable will soon have integrated SedoMLS Fast Transfer
- This means you will be able to list your domains at Unstoppable for sale on SedoMLS from within our dashboard. This gives your domains enhanced visibility and sell through rates, and allows the domain to be transferred to the buyer at another registrar automatically, without intervention from the seller
- Sedo charges a 20% commission for sales made through the SedoMLS network

What is the Afternic Network?

Afternic, a subsidiary of GoDaddy, is a domain marketplace with over 100 partner registrars and resellers
This network gets 85 million monthly searches across all partners
Listing on this network significantly enhances visibility and sell through rates for domain sellers
For some registrars and TLDs, Afternic offers their Fast Transfer integration. This allows listed domains to be transferred immediately to other registrars when they find a buyer, saving the owner the hassle of manually entering auth codes after purchase.
Unstoppable Domains is not yet part of the Afternic Network. We aim to join soon
You can still list domains managed at Unstoppable on Afternic's network by making an account there and listing each domain.
- Commissions for domains managed with Unstoppable but sold via Afternic will be no different than if you managed the domains Afternic, as long as your nameservers are set to Afternic's. In that case commissions will be 15% (without Afternic boost) or 20% (with Afternic boost)
- If you use non-Afternic nameservers, regardless of where your domain is managed, your commissions will be 25% (without Afternic boost) or 30% (with Afternic boost)

SedoMLS (Multi Listing Service) is a very similar competitor to the Afternic Network, and comprises many of the same partner resellers and registrars. They, too, offer fast transfer services between some partner registrars
Unstoppable has integrated SedoMLS listings into our search already. You are able to add them to your cart and purchase them by visiting Sedo's portal to complete the transaction, after which you can transfer them back to Unstoppable
Unstoppable will imminently integrate SedoMLS Fast Transfer
- This means you will be able to list your domains at Unstoppable for sale on SedoMLS from within our dashboard. This gives your domains enhanced visibility and sell through rates
- If your domain sells through SedoMLS, you will be paid through your Unstoppable account and the domain will automatically be transferred to the buyer's registrar without you needing to submitt an auth code.
- Sedo charges a commission of 20% for domains sold via SedoMLS partners