| 136.166.0.0/16 | ZEC | Zenith Electronics Corporation, US |
| 136.166.1.0/24 | ZENITHNET | Zenith Electronics Corporation, US136.166.0.0/16 |
| 136.166.4.0/24 | ZENITHNET | Zenith Electronics Corporation, US136.166.0.0/16 |
| 136.166.250.0/24 | ZENITHNET | Zenith Electronics Corporation, US136.166.0.0/16 |
| 136.166.251.0/24 | ZENITHNET | Zenith Electronics Corporation, US136.166.0.0/16 |
uu: 701, 3356 u4: 701, 3356 u6: dd: d4: d6: