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| CIDR range | Maintainer | Description | Source |
|---|---|---|---|
| 18.0.0.0/11 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.0.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.1.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.2.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.3.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.4.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.5.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.6.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.7.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.8.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.9.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.10.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.11.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.12.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.13.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.14.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.15.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.16.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.17.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.18.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.19.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.20.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.21.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.22.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.23.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.24.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.25.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.26.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.27.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.28.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.29.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.30.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 18.31.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 38.97.116.0/24 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 121.100.31.0/24 | MAINT-AS4637 | PACNET (proxy-registered route object) | RADB |
| 128.30.0.0/15 | MAINT-AS3 | MIT CSAIL | RADB |
| 128.52.0.0/16 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 192.52.61.0/24 | MAINT-MITLL | NET-HAYSTACK-1 | RADB |
| 192.52.62.0/23 | MAINT-MITLL | NET-HAYSTACK-2 | RADB |
| 192.52.62.0/24 | MAINT-AS3 | MIT Haystack Observatory | RADB |
| 192.52.63.0/24 | MAINT-AS3 | MIT Haystack | RADB |
| 192.52.64.0/23 | MAINT-MITLL | NET-HAYSTACK-4 | RADB |
| 192.52.64.0/24 | MAINT-AS3 | MIT Haystack Observatory | RADB |
| 192.52.65.0/24 | MAINT-AS3 | MIT Haystack Observatory | RADB |
| 192.52.66.0/24 | MAINT-AS3 | MIT Haystack Observatory | RADB |
| 192.54.222.0/24 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 192.233.33.0/24 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 197.220.67.0/24 | MAINT-AS8966 | Transworld via EMIX | RADB |
| 197.220.68.0/24 | MAINT-AS8966 | Transworld via EMIX | RADB |
| 197.220.69.0/24 | MAINT-AS8966 | Transworld via EMIX | RADB |
| 197.220.70.0/24 | MAINT-AS8966 | Transworld via EMIX | RADB |
| 197.220.71.0/24 | MAINT-AS8966 | Transworld via EMIX | RADB |
| 197.220.72.0/24 | MAINT-AS8966 | Transworld via EMIX | RADB |
| 197.220.73.0/24 | MAINT-AS8966 | Transworld via EMIX | RADB |
| 197.220.74.0/24 | MAINT-AS8966 | Transworld via EMIX | RADB |
| 197.220.80.0/24 | MAINT-AS8966 | Transworld via EMIX | RADB |
| 2603:4000::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4001::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4002::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4003::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4004::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4005::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4006::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4007::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4008::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4009::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:400a::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4010::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4011::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4014::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4015::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |
| 2603:4016::/32 | MAINT-AS3 | Massachusetts Institute of Technology | RADB |