| ASN | Organization | IPs |
|---|---|---|
| AS- | - | 33,536 |
| AS14358 | Mackenzie Financial Corp | 3,072 |
| AS21992 | Ontario Health | 3,072 |
| AS15160 | Bank of Montreal | 2,560 |
| AS19318 | Interserver Inc | 2,048 |
| AS802 | York University | 2,048 |
| AS819 | LARG*net London and Region Global Computer Network | 1,536 |
| AS14843 | 1610851 Ontario Inc. | 1,280 |
| AS17371 | Bank of Montreal | 1,280 |
| AS19848 | Emergis Inc. | 1,024 |
| AS32176 | Royal Bank of Canada | 1,024 |
| AS32820 | Nipissing University | 1,024 |
| AS53566 | The George Brown College of Applied Arts and Technology | 1,024 |
| AS11544 | Royal Bank of Canada | 768 |
| AS2665 | Shared Services Canada | 768 |
| AS62824 | Regional Municipality of Peel | 768 |
| AS852 | Telus Communications Inc. | 768 |
| AS399410 | Royal Bank of Canada | 512 |
| AS812 | Rogers Communications Canada Inc. | 512 |
| AS1083 | AGK Consulting Inc. | 256 |
| AS11077 | XBASE Technologies Corp. | 256 |
| AS12093 | University of Waterloo | 256 |
| AS14836 | City of Toronto | 256 |
| AS16729 | Royal Bank of Canada | 256 |
| AS16730 | Royal Bank of Canada | 256 |
| AS16731 | Royal Bank of Canada | 256 |
| AS18709 | BMO Harris Bank National Association | 256 |
| AS22202 | Confirmit Inc | 256 |
| AS22278 | Kingston Health Sciences Centre | 256 |
| AS22297 | Jelecos LLC | 256 |
| AS239 | University of Toronto | 256 |
| AS26221 | Bank of Montreal | 256 |
| AS30601 | Lobel Financial Corporation | 256 |
| AS3848 | Worldlinx Telecommunications Inc. | 256 |
| AS393332 | McAllen Independent School District | 256 |
| AS393334 | Camden City School District | 256 |
| AS395922 | GCET | 256 |
| AS397433 | The Great-West Life Assurance Company | 256 |
| AS398954 | Kingston Health Sciences Centre | 256 |
| AS47097 | AmeriPharm Inc. | 256 |
| AS55053 | 2267921 Ontario Ltd | 256 |
| AS62670 | C3/CustomerContactChannels Inc | 256 |
| AS62827 | Thales Dis USA Inc. | 256 |
| AS62933 | Statewide Central Station | 256 |
| AS62934 | First Federal Bank of Florida | 256 |
| AS7178 | Thomson Reuters (Legal) Inc. | 256 |