| Rank | Organization | Country | Q1 rank | Percentage of leader |
| 1 | NTT Communications | tier-1 | 1 | 100 |
| 2 | KDDI Corp | JP | 2 | 52 |
| 3 | China Telecom | CN | 3 | 50 |
| 4 | Tata Communications | tier-1 | 4 | 44 |
| 5 | Pacnet Global | HK/SG | 5 | 35 |
| 6 | Softbank | JP | 6 | 26 |
| 7 | IIJNET | JP | 8 | 17 |
| 8 | Tata Communications | IN | 10 | 17 |
| 9 | CNCGROUP China169 Backbone | CN | 7 | 17 |
| 10 | NTT Communications | JP | 12 | 15 |
Source: Renesys Corp
NTT Communications (tier-1) continues to be the dominant player and has increased its lead on No. 2 KDDI Corp, which had just half of the traffic of the leader in the Asia region. NTT has successfully leveraged its Asian connectivity to incumbents in other continents. Tata Communications (tier-1) narrowed the gap in Q2 on the #3 China Telecom, so perhaps being a tier-1 with signifcant Asian infrastrure is a real competitive advantage.
The top-10 rankings remained fairly stable during Q2, with just a few changes in position at the bottom of the list and one company moving into the ranking -- NTT Comms (Japan) jumped from 12th to 10th as Hutchison Group dropped from 9th to 12th. Tata Communications (India) moved to 8th from the 10th spot while CNC Group fell to 9th from 7th.
Just 5 percentage points separated the players ranked from 7th to 13th (as a percentage of the leader's total traffic). Three companies -- IIJNET, Tata (India) and CNC Group -- each had 17% of the customer base/traffic as NTT Comms (Japan).
The overall IP transit market grew by 1.9% during Q2 compared to 2.8% growth in Q1 and 3.47% in Q4 2010.
This ranking has been created for Telecom Asia by Renesys Corp and is based network service providers with both a footprint in Asia and a large customer base in Asia. The idea is to target the players serving the needs of Asia-to-Asia business and excludes wholesale providers such as Level 3 which don't have a presence in Asia.
Renesys has been monitoring IP traffic for 10 years and looks 350,000 routes. The ranking is based on downstream traffic at the edge, middle and core of the network.