| 66.0.0.0/8 | WHOIS (ARIN) | American Registry for Internet Numbers | US |
| 66.207.0.0/19 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.0.0/19 | WHOIS (ARIN) | Muscatine Power and Water | — |
| 66.207.0.0/19 | ARIN assigned | — | US |
| 66.207.4.0/22 | WHOIS (ARIN) | MPW Cable | US |
| 66.207.2.0/23 | WHOIS (ARIN) | MPW Cable | US |
| 66.207.8.0/23 | WHOIS (ARIN) | MPW Cable | US |
| 66.207.22.0/23 | WHOIS (ARIN) | MPW Cable | US |
| 66.207.30.0/23 | WHOIS (ARIN) | MPW Cable | US |
| 66.207.0.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.1.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.1.0/24 | WHOIS (ARIN) | Muscatine Power and Water | US |
| 66.207.2.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.3.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.4.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.5.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.6.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.7.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.8.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.9.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.10.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.10.0/24 | WHOIS (ARIN) | MPW Cable | US |
| 66.207.11.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.12.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.13.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.14.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.15.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.16.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.17.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.18.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.19.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.20.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.21.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.21.0/24 | WHOIS (ARIN) | MPW Cable | US |
| 66.207.22.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.23.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.24.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.24.0/24 | WHOIS (ARIN) | MPW Cable | US |
| 66.207.25.0/24 | BGP route | AS33734 Muscatine Power and Water | — |
| 66.207.27.0/24 | WHOIS (ARIN) | MPW Cable | US |
| 66.207.29.0/24 | WHOIS (ARIN) | MPW Cable | US |
| 66.207.12.0/28 | WHOIS (ARIN) | Trissel, Graham & Toole | US |
| 66.207.12.16/28 | WHOIS (ARIN) | Grain Processing Corp | US |
| 66.207.12.32/28 | WHOIS (ARIN) | Fieldstone Mortgage Co | US |
| 66.207.12.48/28 | WHOIS (ARIN) | First National Bank of Muscatine | US |
| 66.207.26.224/28 | WHOIS (ARIN) | Allen Abraham | US |
| 66.207.12.136/29 | WHOIS (ARIN) | Lantech of America | US |
| 66.207.12.144/29 | WHOIS (ARIN) | Musco Sports Lighting, Inc | US |
| 66.207.12.152/29 | WHOIS (ARIN) | Trissel, Graham & Toole | US |
| 66.207.12.160/29 | WHOIS (ARIN) | First National Bank | US |
| 66.207.12.168/29 | WHOIS (ARIN) | WG Block Co | US |
| 66.207.12.176/29 | WHOIS (ARIN) | WG Block Co | US |
| 66.207.12.184/29 | WHOIS (ARIN) | Stanley, Lande and Hunter | US |
| 66.207.12.192/29 | WHOIS (ARIN) | Stanley, Lande and Hunter | US |
| 66.207.12.200/29 | WHOIS (ARIN) | Tax Education Support Org | US |
| 66.207.12.208/29 | WHOIS (ARIN) | Central State Bank | US |
| 66.207.12.216/29 | WHOIS (ARIN) | Mark Schiltz - MLS Properties | US |
| 66.207.12.224/29 | WHOIS (ARIN) | NeoComputers, Inc | US |
| 66.207.12.232/29 | WHOIS (ARIN) | Midwes Document Systems | US |
| 66.207.12.240/29 | WHOIS (ARIN) | Musco Sports Lighting | US |
| 66.207.12.248/29 | WHOIS (ARIN) | Brian Chaney | US |
| 66.207.13.0/29 | WHOIS (ARIN) | Stanley Consultants | US |
| 66.207.13.16/29 | WHOIS (ARIN) | Electronic Technical Services | US |