| 63.0.0.0/8 | WHOIS (ARIN) | American Registry for Internet Numbers | US |
| 63.160.0.0/12 | BGP route | AS174 Cogent Communications, LLC | — |
| 63.160.0.0/12 | WHOIS (ARIN) | Cogent Communications, LLC | US |
| 63.160.0.0/12 | ARIN assigned | — | US |
| 63.160.224.0/19 | BGP route | AS4637 Telstra International Limited | — |
| 63.160.224.0/19 | WHOIS (ARIN) | RCN | US |
| 63.161.224.0/19 | BGP route | AS4637 Telstra International Limited | — |
| 63.161.224.0/19 | WHOIS (ARIN) | RCN | US |
| 63.164.160.0/19 | BGP route | AS4637 Telstra International Limited | — |
| 63.164.160.0/19 | WHOIS (ARIN) | RCN | US |
| 63.172.128.0/19 | BGP route | AS4637 Telstra International Limited | — |
| 63.172.128.0/19 | WHOIS (ARIN) | RCN | US |
| 63.175.32.0/19 | BGP route | AS4637 Telstra International Limited | — |
| 63.175.32.0/19 | WHOIS (ARIN) | RCN | US |
| 63.161.16.0/20 | BGP route | AS4637 Telstra International Limited | — |
| 63.161.16.0/20 | WHOIS (ARIN) | RCN | US |
| 63.161.176.0/20 | BGP route | AS174 Cogent Communications, LLC | — |
| 63.162.16.0/20 | BGP route | AS174 Cogent Communications, LLC | — |
| 63.162.80.0/20 | BGP route | AS12133 Local Internet Service Company | — |
| 63.164.32.0/20 | BGP route | AS11398 CenturyLink Communications, LLC | — |
| 63.164.208.0/20 | BGP route | AS174 Cogent Communications, LLC | — |
| 63.165.144.0/20 | BGP route | AS5778 CenturyLink Communications, LLC | — |
| 63.165.144.0/20 | WHOIS (ARIN) | Sprint Midatlantic Telecom | — |
| 63.165.240.0/20 | BGP route | AS11403 NYI | — |
| 63.166.32.0/20 | BGP route | AS174 Cogent Communications, LLC | — |
| 63.167.208.0/20 | BGP route | AS36549 WestTel Ltd. | — |
| 63.167.208.0/20 | WHOIS (ARIN) | Logic Communications Ltd | BM |
| 63.174.16.0/20 | BGP route | AS17054 Expedient | — |
| 63.174.16.0/20 | WHOIS (ARIN) | Expedient | — |
| 63.160.32.0/21 | BGP route | AS4637 Telstra International Limited | — |
| 63.160.32.0/21 | WHOIS (ARIN) | RCN | US |
| 63.161.208.0/21 | BGP route | AS6222 CenturyLink Communications, LLC | — |
| 63.162.200.0/21 | BGP route | AS5778 CenturyLink Communications, LLC | — |
| 63.162.200.0/21 | WHOIS (ARIN) | Sprint DSL Network | US |
| 63.164.32.0/21 | WHOIS (ARIN) | LV.Net | US |
| 63.164.96.0/21 | BGP route | AS13767 DataBank Holdings, Ltd. | — |
| 63.164.96.0/21 | WHOIS (ARIN) | DATABANK, INC. | US |
| 63.165.24.0/21 | BGP route | AS11398 CenturyLink Communications, LLC | — |
| 63.169.120.0/21 | BGP route | AS23175 PogoZone | — |
| 63.169.120.0/21 | WHOIS (ARIN) | Fidalgo Networking, Inc. | — |
| 63.174.8.0/21 | BGP route | AS14921 CenturyLink Communications, LLC | — |
| 63.160.168.0/22 | BGP route | AS40631 Mastec, Inc | — |
| 63.160.168.0/22 | WHOIS (ARIN) | Mastec North America, Inc. | US |
| 63.160.180.0/22 | WHOIS (ARIN) | NCC PS ENTERPRISES | US |
| 63.160.188.0/22 | BGP route | AS6079 RCN | — |
| 63.160.188.0/22 | WHOIS (ARIN) | RCN | US |
| 63.160.204.0/22 | BGP route | AS6079 RCN | — |
| 63.160.204.0/22 | WHOIS (ARIN) | RCN | US |
| 63.160.212.0/22 | BGP route | AS10461 Eze Castle Software LLC | — |
| 63.161.104.0/22 | WHOIS (ARIN) | Cloudfitters | US |
| 63.161.164.0/22 | BGP route | AS15347 IBEX Global Solutions | — |
| 63.162.204.0/22 | BGP route | AS19901 Brightspeed | — |
| 63.163.156.0/22 | WHOIS (ARIN) | Copart Auto Auctions | US |
| 63.164.40.0/22 | WHOIS (ARIN) | LV.Net | US |
| 63.164.104.0/22 | BGP route | AS19390 JH Compunet | — |
| 63.164.108.0/22 | BGP route | AS27696 LIBERTY NETWORKS HONDURAS, SOCIEDAD DE RESPONSABILIDAD LIMITADA | — |
| 63.166.28.0/22 | BGP route | AS11924 Montana Opticom, LLC | — |
| 63.166.28.0/22 | WHOIS (ARIN) | Bridge Band Communications/At | US |
| 63.166.212.0/22 | WHOIS (ARIN) | Circle International | US |
| 63.173.212.0/22 | BGP route | AS19390 JH Compunet | — |
| 63.174.136.0/22 | BGP route | AS46853 Southwest Texas Communications | — |
| 63.174.144.0/22 | BGP route | AS46853 Southwest Texas Communications | — |
| 63.175.140.0/22 | WHOIS (ARIN) | ADVERTISING SPECIALTY INS | US |
| 63.175.156.0/22 | BGP route | AS14813 Columbus Telecommunications (Barbados) Limited | — |
| 63.160.4.0/23 | BGP route | AS4637 Telstra International Limited | — |
| 63.160.4.0/23 | WHOIS (ARIN) | RCN | US |
| 63.160.114.0/23 | BGP route | AS62802 Macy's Systems and Technology, Inc. | — |
| 63.160.114.0/23 | WHOIS (ARIN) | Macy's Systems and Technology, Inc. | US |
| 63.160.168.0/23 | BGP route | AS40631 Mastec, Inc | — |
| 63.160.170.0/23 | BGP route | AS40631 Mastec, Inc | — |
| 63.160.216.0/23 | BGP route | AS10461 Eze Castle Software LLC | — |
| 63.160.216.0/23 | WHOIS (ARIN) | Eze Castle Software LLC | US |
| 63.161.116.0/23 | BGP route | AS13938 SS&C Technologies, Inc. | — |
| 63.161.116.0/23 | WHOIS (ARIN) | SS&C TECHNOLOGIES | US |
| 63.162.198.0/23 | BGP route | AS19901 Brightspeed | — |
| 63.162.198.0/23 | WHOIS (ARIN) | Sprint DSL Network | US |
| 63.165.26.0/23 | WHOIS (ARIN) | Community College Southern Nevada | US |
| 63.165.28.0/23 | WHOIS (ARIN) | LV.Net | US |
| 63.165.30.0/23 | WHOIS (ARIN) | Aladdin Hotel & Casino | US |
| 63.165.152.0/23 | WHOIS (ARIN) | Inteliport, Inc. | US |
| 63.166.162.0/23 | BGP route | AS17046 Action Communications, Inc. | — |
| 63.166.164.0/23 | BGP route | AS18632 Volcano Vision, Inc. | — |
| 63.166.164.0/23 | WHOIS (ARIN) | Volcano Vision, Inc. | US |
| 63.168.20.0/23 | BGP route | AS13866 Computer Country | — |
| 63.170.64.0/23 | WHOIS (ARIN) | Macy's Systems and Technology, Inc. | US |
| 63.170.68.0/23 | BGP route | AS14813 Columbus Telecommunications (Barbados) Limited | — |
| 63.170.118.0/23 | BGP route | AS18632 Volcano Vision, Inc. | — |
| 63.170.118.0/23 | WHOIS (ARIN) | Volcano Telephone | US |
| 63.170.254.0/23 | WHOIS (ARIN) | SCP Pool Corporation | US |
| 63.172.84.0/23 | BGP route | AS174 Cogent Communications, LLC | — |
| 63.173.118.0/23 | WHOIS (ARIN) | Sprint DSL Network | US |
| 63.173.122.0/23 | WHOIS (ARIN) | Sprint DSL Network | US |
| 63.175.232.0/23 | WHOIS (ARIN) | Prevare LLC | US |
| 63.160.0.0/24 | WHOIS (ARIN) | RCN | US |
| 63.160.15.0/24 | WHOIS (ARIN) | NCC PS ENTERPRISES | US |
| 63.160.17.0/24 | WHOIS (ARIN) | G2 INTERACTIVE | US |
| 63.160.43.0/24 | WHOIS (ARIN) | SPLNK-810478 | US |
| 63.160.44.0/24 | WHOIS (ARIN) | BRYAN MUNICIPAL UTILITIES | US |
| 63.160.45.0/24 | WHOIS (ARIN) | Cisco Systems Inc. | US |
| 63.160.91.0/24 | WHOIS (ARIN) | Pasadena Unified School District | US |
| 63.160.92.0/24 | WHOIS (ARIN) | Blue Yonder, Inc | US |