* Forth-nightly updated. Last update: 17 June 2020
* Reach out to the maintainer at awal@nsrc.org for queries.
| Serial | Organization Name | AS Number | Total v4 Prefix | Total v6 Prefix | Invalid v4 Prefix | Invalid v6 Prefix | Not-found v4 Prefix | Not-found v6 Prefix |
|---|---|---|---|---|---|---|---|---|
| 1 | Dialog Axiata PLC. | AS18001 | 78 | 136 | 0 | 0 | 0 | 0 |
| 2 | Bharti Airtel Lanka Pvt. Limited | AS132045 | 38 | 1 | 1 | 0 | 12 | 0 |
| 3 | Sri Lankan Airlines | AS17904 | 18 | 0 | 15 | 0 | 0 | 0 |
| 4 | Sri Lanka Telecom Internet | AS9329 | 127 | 1 | 0 | 0 | 10 | 0 |
| 5 | Etisalat Lanka (Pvt) Ltd. | AS17470 | 15 | 1 | 0 | 0 | 5 | 0 |
| 6 | Hutchison Telecommunications | AS132447 | 7 | 1 | 0 | 0 | 4 | 1 |
| 7 | COMMERCIAL BANK OF CEYLON PLC | AS133051 | 1 | 0 | 0 | 0 | 1 | 0 |
| 8 | Bank Of Ceylon | AS136934 | 1 | 0 | 0 | 0 | 1 | 0 |
| 9 | Hatton National Bank PLC | AS139731 | 1 | 0 | 0 | 0 | 1 | 0 |
| 10 | Nations Trust Banks Plc | AS139032 | 2 | 0 | 0 | 0 | 2 | 0 |
| 11 | Innodata Lanka Pvt Ltd | AS131218 | 1 | 0 | 0 | 0 | 1 | 0 |
| 12 | Mobitel Pvt Ltd | AS45356 | 59 | 3 | 0 | 0 | 0 | 0 |
| 13 | Lanka Bell Limited | AS45224 | 33 | 2 | 0 | 0 | 0 | 0 |
| 14 | Lanka Education & Research Network, NREN | AS38229 | 8 | 1 | 0 | 0 | 0 | 0 |
| 15 | Information and Communication Technology Agency of Sri Lanka | AS132124 | 2 | 0 | 0 | 0 | 0 | 0 |
| 16 | Sri Lanka Telecom PLC, GLobal Peering | AS45489 | 1 | 1 | 0 | 0 | 0 | 0 |
| 17 | Bharti Airtel Lanka Pvt. Limited | AS45517 | 1 | 0 | 0 | 0 | 0 | 0 |
| 18 | Lanka Communication Services | AS5087 | 86 | 1 | 0 | 0 | 0 | 0 |
| 19 | DP Technologies (Pvt) Ltd | AS138169 | 1 | 0 | 0 | 0 | 0 | 0 |