Idea Cellular is at the top of this list. At 92.8 per cent, the company had the highest percentage of visitor local register subscribers in July.
From January 2011, it has consistently recorded monthly VLR of about 90 per cent. Idea is followed by Bharti and Vodafone.
Bharti had seen its VLR rise to about 92 per cent in January.
However, in July, this dropped to 90.5 per cent.
VLR subscribers are those whose phones are switched on -- they make or receive calls.
Bharat Sanchar Nigam Limited ranks ninth in the top-10 list.
With about a half of its customer base inactive, CDMA operator Sistema stood last in the list.
The Russian company, however, says its data subscribers aren't reflected in the VLR numbers.
A major concern is new companies such as Uninor and Sistema aren't alone in recording poor VLR numbers.
Some incumbents, too, recorded a poor VLR subscriber base.
These include Tata Teleservices, Aircel and BSNL.
Till July, together, these five companies increased their active subscriber base by a mere 22
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