No it isn't.
I did some searching, and what I found was that Burraq Telecom (does anyone recall?) was bought by Q-Tel (a Qatari-based telco). They, alongwith another company (I think) launched Wi-tribe.
Wi-tribe is in Jordan (and I was going over the rates - and they seem flippin' expensive... I'm not sure what the GDP per capita is in Jordan for comparative basis though), and Pakistan is next on the list.
Burraq was running WiMax, but on a limited scale (i.e. it was only available in some portions of Islamabad, AFAIK). Burraq's been changed to Wi-Tribe (so technically, the company's changed and all).
wi-tribe.com > search somewhere here.