I particularly like #7 and #5
I like the use of the separation bar between the acronym and full name.
I like the use of the slogan in all of them, although with #4 the text is getting very small.
I like #7 best because it uses the globe and uses the smaller font for LTD. With the slogan under the full name people can see the company is about "ICT" and the globe re-enforces global. I also like the left justification of the slogan text.
To inspire you further, I deal with the whole range of IT communications networks, from global (satellites and cables) to local (4G and radios) as well as all the Infrastructure that send traffic over them (mobile devices, desktops to data centres) from Land, Sea and Air.