| Range | Organization |
| 12.219.9.0/24 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 13.20.0.0/14 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 23.29.100.0/24 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 23.29.102.0/23 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 23.29.106.0/23 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 23.29.110.0/24 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 23.246.43.0/24 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 40.139.126.0/24 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 46.22.64.0/21 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 46.22.76.0/24 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 46.34.66.0/23 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 46.34.70.0/24 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 46.34.72.0/24 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 46.34.74.0/24 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 46.34.76.0/23 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 46.34.79.0/24 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 46.34.84.0/22 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |
| 50.203.249.0/24 | MCI Communications Services, Inc. d/b/a Verizon Business Lookup |