I'm on Phonecoop and all seems well here.
I already use OpenDNS, maybe that helps?

M.Blackmore wrote:
Anyone else on the Phone Coop having difficulty getting webpages to
load? Anything with an http:// is failing, email is fine, and bizarrely
anything with an https:// at the front is also working OK.

Is it the phone coop or has something happened to my adsl modem or IPCop