Coupon is TESTANDCODE
I had already used it before realising it was one or the other, honestly its one of the better TLD’s IMO, too bad Cloudflare doesn’t support it yet.
Edit: I should have mentioned, you have to make a tentative payment of 1 USD, which is reverted.
I’m fairly happy with porkbun, I would choose CloudFlare due to the services they offer, but considering they don’t support as many TLD’s, Porkbun would be my preference.