| 166.0.0.0/8 | WHOIS (ARIN) | Various Registries (Maintained by ARIN) | US |
| 166.0.0.0/15 | WHOIS (ARIN) | Ace Data Centers, Inc. | US |
| 166.0.0.0/15 | ARIN assigned | β | US |
| 166.0.16.0/20 | BGP route | AS401152 Ace Data Centers II, L.L.C. | β |
| 166.0.8.0/21 | BGP route | AS401152 Ace Data Centers II, L.L.C. | β |
| 166.1.8.0/21 | BGP route | AS4766 Korea Telecom | β |
| 166.1.112.0/21 | BGP route | AS6079 RCN | β |
| 166.1.112.0/21 | WHOIS (ARIN) | RCN | US |
| 166.1.120.0/21 | BGP route | AS207645 F & W Networks Ltd | β |
| 166.1.120.0/21 | WHOIS (ARIN) | Private Customer | GB |
| 166.1.176.0/21 | BGP route | AS6079 RCN | β |
| 166.1.176.0/21 | WHOIS (ARIN) | RCN | US |
| 166.1.192.0/21 | BGP route | AS6079 RCN | β |
| 166.1.192.0/21 | WHOIS (ARIN) | RCN | US |
| 166.0.4.0/22 | BGP route | AS213683 Host.AL Shpk | β |
| 166.0.16.0/22 | WHOIS (ARIN) | Private Customer | US |
| 166.0.20.0/22 | BGP route | AS20326 TeraSwitch Networks Inc. | β |
| 166.0.64.0/22 | WHOIS (ARIN) | Cytracom LLC | US |
| 166.0.72.0/22 | BGP route | AS401152 Ace Data Centers II, L.L.C. | β |
| 166.0.80.0/22 | BGP route | AS42831 UK Dedicated Servers Limited | β |
| 166.0.80.0/22 | WHOIS (ARIN) | Metronet | US |
| 166.0.88.0/22 | BGP route | AS10753 Level 3 Parent, LLC | β |
| 166.0.92.0/22 | BGP route | AS10753 Level 3 Parent, LLC | β |
| 166.1.132.0/22 | BGP route | AS6079 RCN | β |
| 166.1.132.0/22 | WHOIS (ARIN) | RCN | US |
| 166.1.148.0/22 | BGP route | AS6079 RCN | β |
| 166.1.148.0/22 | WHOIS (ARIN) | RCN | US |
| 166.1.164.0/22 | BGP route | AS6079 RCN | β |
| 166.1.164.0/22 | WHOIS (ARIN) | RCN | US |
| 166.1.168.0/22 | BGP route | AS6079 RCN | β |
| 166.1.168.0/22 | WHOIS (ARIN) | RCN | US |
| 166.1.184.0/22 | BGP route | AS6079 RCN | β |
| 166.1.184.0/22 | WHOIS (ARIN) | RCN | US |
| 166.1.212.0/22 | BGP route | AS6079 RCN | β |
| 166.1.212.0/22 | WHOIS (ARIN) | RCN | US |
| 166.1.252.0/22 | BGP route | AS6079 RCN | β |
| 166.1.252.0/22 | WHOIS (ARIN) | RCN | US |
| 166.0.2.0/23 | BGP route | AS9009 M247 Europe SRL | β |
| 166.0.16.0/23 | BGP route | AS63150 BAGE CLOUD LLC | β |
| 166.0.18.0/23 | BGP route | AS63150 BAGE CLOUD LLC | β |
| 166.0.68.0/23 | BGP route | AS7979 Servers.com, Inc. | β |
| 166.0.78.0/23 | BGP route | AS5511 Orange S.A. | β |
| 166.0.84.0/23 | BGP route | AS5511 Orange S.A. | β |
| 166.0.86.0/23 | BGP route | AS14618 Amazon.com, Inc. | β |
| 166.0.96.0/23 | BGP route | AS401152 Ace Data Centers II, L.L.C. | β |
| 166.0.100.0/23 | BGP route | AS401152 Ace Data Centers II, L.L.C. | β |
| 166.0.108.0/23 | BGP route | AS263812 SONDATECH S.A.S. | β |
| 166.0.164.0/23 | BGP route | AS3320 Deutsche Telekom AG | β |
| 166.0.182.0/23 | BGP route | AS6939 Hurricane Electric LLC | β |
| 166.0.182.0/23 | WHOIS (ARIN) | Internet Utilities NA LLC | US |
| 166.0.190.0/23 | BGP route | AS6939 Hurricane Electric LLC | β |
| 166.0.190.0/23 | WHOIS (ARIN) | Internet Utilities NA LLC | US |
| 166.0.192.0/23 | BGP route | AS399646 Snaju Development | β |
| 166.0.192.0/23 | WHOIS (ARIN) | Snaju Development | US |
| 166.0.196.0/23 | BGP route | AS401152 Ace Data Centers II, L.L.C. | β |
| 166.0.198.0/23 | BGP route | AS61112 AKILE LTD | β |
| 166.0.198.0/23 | WHOIS (ARIN) | AKILE LTD | TW |
| 166.0.206.0/23 | BGP route | AS401152 Ace Data Centers II, L.L.C. | β |
| 166.0.234.0/23 | BGP route | AS401152 Ace Data Centers II, L.L.C. | β |
| 166.0.236.0/23 | BGP route | AS6939 Hurricane Electric LLC | β |
| 166.0.236.0/23 | WHOIS (ARIN) | Internet Utilities NA LLC | US |
| 166.0.238.0/23 | BGP route | AS401152 Ace Data Centers II, L.L.C. | β |
| 166.1.58.0/23 | BGP route | AS401152 Ace Data Centers II, L.L.C. | β |
| 166.1.58.0/23 | WHOIS (ARIN) | Metronet | US |
| 166.1.66.0/23 | BGP route | AS6079 RCN | β |
| 166.1.66.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.68.0/23 | BGP route | AS263767 CORPORACIΓN GALA IT, C.A. | β |
| 166.1.68.0/23 | WHOIS (ARIN) | CORPORACION GALA IT C.A. | VE |
| 166.1.70.0/23 | BGP route | AS48614 ITSOFT LLC | β |
| 166.1.70.0/23 | WHOIS (ARIN) | Private Customer | SI |
| 166.1.142.0/23 | BGP route | AS6079 RCN | β |
| 166.1.142.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.146.0/23 | BGP route | AS6079 RCN | β |
| 166.1.146.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.152.0/23 | BGP route | AS6079 RCN | β |
| 166.1.152.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.158.0/23 | BGP route | AS6079 RCN | β |
| 166.1.158.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.162.0/23 | BGP route | AS6079 RCN | β |
| 166.1.162.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.174.0/23 | BGP route | AS6079 RCN | β |
| 166.1.174.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.188.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.202.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.204.0/23 | WHOIS (ARIN) | Cypresstel Global Network | HK |
| 166.1.206.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.222.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.242.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.244.0/23 | WHOIS (ARIN) | RCN | US |
| 166.1.250.0/23 | WHOIS (ARIN) | RCN | US |
| 166.0.8.0/24 | WHOIS (ARIN) | Internet Utilities NA LLC | US |
| 166.0.9.0/24 | WHOIS (ARIN) | Internet Utilities NA LLC | US |
| 166.0.10.0/24 | WHOIS (ARIN) | Private Customer | AT |
| 166.0.11.0/24 | WHOIS (ARIN) | Metronet | US |
| 166.0.12.0/24 | WHOIS (ARIN) | Metronet | US |
| 166.0.13.0/24 | WHOIS (ARIN) | INGFRACOL SAS | CO |
| 166.0.14.0/24 | WHOIS (ARIN) | Private Customer | CL |
| 166.0.15.0/24 | WHOIS (ARIN) | Private Customer | US |
| 166.0.20.0/24 | WHOIS (ARIN) | Metronet | US |
| 166.0.21.0/24 | WHOIS (ARIN) | Private Customer | CN |
| 166.0.22.0/24 | WHOIS (ARIN) | OrangeVPS LLC | US |