No: 108, W.A.D Ramanayake Mawatha,
Colombo 02,
Sri Lanka.

No 17, Sri Sugathodaya Mawatha,
Colombo 02,
Sri Lanka.

1st Floor,OTS Building,
Sri Lanka Telecom Headquarters,
Lotus Road,
Colombo 01.

05,Anderson Road,
Colombo 05,
Sri Lanka.

SLT Premises, High Level Road,
Nugegoda,
Sri Lanka.

P. O. Box 503,
Lotus Road,
Colombo 01,
Sri Lanka.

Sri Lanka Technological Campus
Trace Expert City,
Tripoli Market Square, Colombo 10,
Sri Lanka.

No. 07, Anderson Road,
Colombo 05,
Sri Lanka.