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| CIDR range | Maintainer | Description | Source |
|---|---|---|---|
| 138.218.0.0/16 | MAINT-AS19752 | MEGONET | RADB |
| 138.218.0.0/16 | MAINT-AS808 | GOMB | BELL |
| 138.218.0.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.15.0.0/16 | MAINT-AS852 | Government of Ontario | RADB |
| 142.15.0.0/16 | MNT-GOVER-10 | Minister of Public and Business Service Delivery, Government of Ontario | ARIN |
| 142.18.0.0/16 | MAINT-AS852 | Government of Ontario | RADB |
| 142.61.0.0/16 | MAINT-AS852 | Government of Ontario | RADB |
| 142.106.0.0/16 | MAINT-AS808 | Government of Ontario | BELL |
| 142.106.0.0/16 | MAINT-AS19752 | ONT-GOV1 | RADB |
| 142.106.0.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.106.128.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.107.0.0/16 | MAINT-AS19752 | ONT-GOV2 | RADB |
| 142.107.0.0/16 | MAINT-AS808 | Government of Ontario | BELL |
| 142.107.0.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.107.128.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.108.0.0/16 | MAINT-AS808 | Government of Ontario | BELL |
| 142.108.0.0/16 | MAINT-AS19752 | ONT-GOV3 | RADB |
| 142.108.0.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.108.128.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.140.0.0/16 | MAINT-AS808 | Government of Ontario | BELL |
| 142.140.0.0/16 | MAINT-AS19752 | GOVONCA1 | RADB |
| 142.140.0.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.140.128.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.141.0.0/16 | MAINT-AS808 | Government of Ontario | BELL |
| 142.141.0.0/16 | MAINT-AS19752 | GOVONCA2 | RADB |
| 142.141.0.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.141.128.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.142.0.0/16 | MAINT-AS808 | Government of Ontario | BELL |
| 142.142.0.0/16 | MAINT-AS19752 | GOVONCA3 | RADB |
| 142.142.0.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.142.128.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.143.0.0/16 | MAINT-AS19752 | GOVONCA4 | RADB |
| 142.143.0.0/16 | MAINT-AS808 | Government of Ontario | BELL |
| 142.143.0.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.143.128.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.144.0.0/16 | MAINT-AS808 | Government of Ontario | BELL |
| 142.144.0.0/16 | MAINT-AS19752 | GOVONCA5 | RADB |
| 142.144.0.0/17 | MAINT-AS852 | NET-142-144-0-0-1 | RADB |
| 142.144.128.0/17 | MAINT-AS852 | NET-142-144-0-0-1 | RADB |
| 142.145.0.0/16 | MAINT-AS549 | ONT-GOV9 | BELL |
| 142.145.0.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 142.145.128.0/17 | MAINT-AS852 | Government of Ontario | RADB |
| 192.68.229.0/24 | MAINT-AS549 | ONMCU | BELL |
| 192.75.156.0/24 | MAINT-AS808 | Government of Ontario | BELL |
| 192.75.156.0/24 | MAINT-AS19752 | CTUT01 | RADB |
| 192.75.232.0/24 | MAINT-AS549 | MCU1 | BELL |
| 192.75.233.0/24 | MAINT-AS549 | MCU2 | BELL |
| 192.75.234.0/24 | MAINT-AS549 | MCU3 | BELL |
| 192.75.235.0/24 | MAINT-AS549 | MCU4 | BELL |
| 192.197.191.0/24 | MAINT-AS19752 | GOVONCA7 | RADB |
| 192.197.192.0/24 | MAINT-AS808 | Government of Ontario | BELL |
| 192.197.192.0/24 | MAINT-AS19752 | GOVONCA8 | RADB |
| 192.197.193.0/24 | MAINT-AS19752 | GOVONCA9 | RADB |
| 199.71.12.0/24 | MAINT-AS549 | MET-ON-CA-C-12 | BELL |
| 199.71.13.0/24 | MAINT-AS549 | MET-ON-CA-C-13 | BELL |
| 199.71.14.0/24 | MAINT-AS549 | MET-ON-CA-C-14 | BELL |
| 199.71.15.0/24 | MAINT-AS549 | MET-ON-CA-C-15 | BELL |
| 199.71.16.0/24 | MAINT-AS549 | MET-ON-CA-C-16 | BELL |
| 199.71.17.0/24 | MAINT-AS549 | MET-ON-CA-C-17 | BELL |
| 199.71.18.0/24 | MAINT-AS549 | MET-ON-CA-C-18 | BELL |
| 199.71.19.0/24 | MAINT-AS549 | MET-ON-CA-C-19 | BELL |
| 199.71.20.0/24 | MAINT-AS549 | MET-ON-CA-C-20 | BELL |
| 199.71.21.0/24 | MAINT-AS549 | MET-ON-CA-C-21 | BELL |
| 199.71.22.0/24 | MAINT-AS549 | MET-ON-CA-C-22 | BELL |
| 199.71.23.0/24 | MAINT-AS549 | MET-ON-CA-C-23 | BELL |
| 199.71.24.0/24 | MAINT-AS549 | MET-ON-CA-C-24 | BELL |
| 199.71.25.0/24 | MAINT-AS549 | MET-ON-CA-C-25 | BELL |
| 199.71.26.0/24 | MAINT-AS549 | MET-ON-CA-C-26 | BELL |
| 199.71.27.0/24 | MAINT-AS549 | MET-ON-CA-C-27 | BELL |
| 199.71.28.0/22 | MAINT-AS808 | Government of Ontario RAS | BELL |
| 199.71.28.0/24 | MAINT-AS549 | MET-ON-CA-C-28 | BELL |
| 199.71.29.0/24 | MAINT-AS549 | MET-ON-CA-C-29 | BELL |
| 199.71.30.0/24 | MAINT-AS549 | MET-ON-CA-C-30 | BELL |
| 199.71.31.0/24 | MAINT-AS549 | MET-ON-CA-C-31 | BELL |
| 199.71.108.0/24 | MAINT-AS549 | LAMBTO-ON-CA-C-71-108 | BELL |
| 199.71.109.0/24 | MAINT-AS549 | LAMBTO-ON-CA-C-71-109 | BELL |
| 199.71.110.0/24 | MAINT-AS549 | LAMBTO-ON-CA-C-71-110 | BELL |
| 199.71.111.0/24 | MAINT-AS549 | LAMBTO-ON-CA-C-71-111 | BELL |
| 199.71.112.0/24 | MAINT-AS549 | LAMBTO-ON-CA-C-71-112 | BELL |
| 199.71.136.0/24 | MAINT-AS549 | RCRCSSB-136 | BELL |
| 199.71.137.0/24 | MAINT-AS549 | RCRCSSB-137 | BELL |
| 199.71.141.0/24 | MAINT-AS549 | WBOE | BELL |
| 199.85.202.0/24 | MAINT-AS549 | WELLANDRC-C-85-202 | BELL |
| 199.85.203.0/24 | MAINT-AS549 | WELLANDRC-C-85-203 | BELL |
| 199.85.252.0/24 | MAINT-AS549 | HERITAGEPARK-252 | BELL |
| 199.85.253.0/24 | MAINT-AS549 | HERITAGEPARK-253 | BELL |
| 204.40.0.0/16 | MAINT-AS549 | CTS003 | BELL |
| 204.40.0.0/16 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.1.0/24 | MAINT-AS852 | Government of Ontario | RADB |
| 204.40.7.0/24 | MAINT-AS852 | NET-204-40-0-0-1 | RADB |
| 204.40.40.0/24 | MAINT-AS852 | NET-204-40-0-0-1 | RADB |
| 204.40.64.0/22 | MAINT-AS852 | Government of Ontario | RADB |
| 204.40.90.0/24 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.91.0/24 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.128.0/24 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.129.0/24 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.130.0/24 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.131.0/24 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.136.0/24 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.192.0/24 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.193.0/24 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.194.0/24 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.195.0/24 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.200.0/24 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.40.253.0/24 | MAINT-AS808 | Government of Ontario RAS | BELL |
| 204.41.0.0/16 | MAINT-AS549 | CTS003-A | BELL |
| 204.41.0.0/16 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 204.41.1.0/24 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.2.0/24 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.3.0/24 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.4.0/22 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.8.0/22 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.12.0/22 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.16.0/22 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.20.0/24 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.21.0/24 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.24.0/23 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.32.0/24 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.36.0/22 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.48.0/22 | MAINT-AS852 | Government of Ontario | RADB |
| 204.41.52.0/22 | MAINT-AS852 | Government of Ontario | RADB |
| 204.187.1.0/24 | MAINT-AS549 | GOV-ON-CA-1 | BELL |
| 204.187.2.0/24 | MAINT-AS549 | GOV-ON-CA-2 | BELL |
| 204.187.3.0/24 | MAINT-AS549 | GOV-ON-CA-3 | BELL |
| 204.187.4.0/24 | MAINT-AS549 | GOV-ON-CA-4 | BELL |
| 204.187.5.0/24 | MAINT-AS549 | GOV-ON-CA-5 | BELL |
| 204.187.6.0/24 | MAINT-AS549 | GOV-ON-CA-6 | BELL |
| 204.187.7.0/24 | MAINT-AS549 | GOV-ON-CA-7 | BELL |
| 204.187.8.0/24 | MAINT-AS549 | GOV-ON-CA-8 | BELL |
| 204.187.9.0/24 | MAINT-AS549 | GOV-ON-CA-9 | BELL |
| 204.187.10.0/24 | MAINT-AS549 | GOV-ON-CA-10 | BELL |
| 205.210.176.0/24 | MAINT-AS549 | CVH-176 | BELL |
| 205.210.177.0/24 | MAINT-AS549 | CVH-177 | BELL |
| 205.210.178.0/24 | MAINT-AS549 | CVH-178 | BELL |
| 205.210.179.0/24 | MAINT-AS549 | CVH-179 | BELL |
| 205.210.180.0/24 | MAINT-AS549 | CVH-180 | BELL |
| 205.210.181.0/24 | MAINT-AS549 | CVH-181 | BELL |
| 205.210.182.0/24 | MAINT-AS549 | CVH-182 | BELL |
| 205.210.183.0/24 | MAINT-AS549 | CVH-183 | BELL |
| 206.177.0.0/16 | MAINT-AS549 | CTS001 | BELL |
| 206.177.43.0/24 | MAINT-AS852 | Government of Ontario | RADB |
| 206.177.197.0/24 | MAINT-AS852 | Government of Ontario | RADB |
| 206.178.0.0/16 | MAINT-AS852 | GO - Treasury Board Secretariat | RADB |
| 206.178.0.0/16 | MAINT-AS549 | CTS002 | BELL |
| 206.248.107.0/24 | MAINT-AS808 | Government of Ontario | BELL |