From the US, and I also use "dub dub dub" (picked it up from my networking professor…), I've also used "hup-ta" to refer to "http://". ("hup-tis" is https://) It sounds ridiculous, but it flows a lot better than "ache tee tee pee colon slash slash".

(my co-workers understand this, and I think it's growing on a few. One still resists.)