| 63.0.0.0/8 | WHOIS (ARIN) | American Registry for Internet Numbers | US |
| 63.224.0.0/12 | BGP route | AS209 CenturyLink Communications, LLC | — |
| 63.232.0.0/14 | WHOIS (ARIN) | CenturyLink Communications, LLC | US |
| 63.232.0.0/14 | ARIN assigned | — | US |
| 63.234.72.0/21 | WHOIS (ARIN) | WEBER COUNTY | US |
| 63.232.68.0/22 | WHOIS (ARIN) | WAVELENGTH CORP | US |
| 63.234.40.0/22 | WHOIS (ARIN) | GAO ISTS TELECOM SERVICESGROUP | US |
| 63.235.184.0/22 | BGP route | AS3356 Level 3 Parent, LLC | — |
| 63.232.56.0/23 | BGP route | AS53316 CHEETAHMAIL | — |
| 63.232.56.0/23 | WHOIS (ARIN) | CHEETAHMAIL | US |
| 63.232.88.0/23 | BGP route | AS3356 Level 3 Parent, LLC | — |
| 63.232.90.0/23 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.122.0/23 | WHOIS (ARIN) | EDUCATION 2020 | US |
| 63.232.224.0/23 | WHOIS (ARIN) | MIS Sciences Corporation | US |
| 63.232.252.0/23 | WHOIS (ARIN) | Johnson County Kansas | US |
| 63.233.8.0/23 | WHOIS (ARIN) | BALDWIN COUNTY INTERNET DSSI SERVIC | US |
| 63.233.192.0/23 | WHOIS (ARIN) | ST AMBROSE UNIVERSITY | US |
| 63.233.198.0/23 | BGP route | AS3356 Level 3 Parent, LLC | — |
| 63.233.198.0/23 | WHOIS (ARIN) | NORTHERN NEW MEXICO TELECOM INC | US |
| 63.233.206.0/23 | BGP route | AS3356 Level 3 Parent, LLC | — |
| 63.233.220.0/23 | BGP route | AS395245 La Canada Wireless Association | — |
| 63.235.20.0/23 | BGP route | AS20940 Akamai International B.V. | — |
| 63.235.20.0/23 | WHOIS (ARIN) | AKAMAI TECHNOLOGIES INC | US |
| 63.235.28.0/23 | WHOIS (ARIN) | AKAMAI TECHNOLOGIES INC | US |
| 63.235.36.0/23 | WHOIS (ARIN) | Akamai Technologies, Inc. | US |
| 63.235.168.0/23 | BGP route | AS3356 Level 3 Parent, LLC | — |
| 63.235.188.0/23 | BGP route | AS26244 Bowling Green Municipal Utilities | — |
| 63.235.188.0/23 | WHOIS (ARIN) | Bowling Green Municipal Utilities | US |
| 63.232.1.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.4.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.18.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.19.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.20.0/24 | WHOIS (ARIN) | CITY OF SANTA FE | US |
| 63.232.21.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.22.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.23.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.24.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.25.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.26.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.31.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.35.0/24 | BGP route | AS3356 Level 3 Parent, LLC | — |
| 63.232.35.0/24 | WHOIS (ARIN) | BROADBAND CORP | US |
| 63.232.38.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.39.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.40.0/24 | BGP route | AS399988 ENC Holding Corporation | — |
| 63.232.41.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.46.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.47.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.48.0/24 | BGP route | AS394575 Accenture Federal Services LLC | — |
| 63.232.48.0/24 | WHOIS (ARIN) | Accenture Federal Services LLC | US |
| 63.232.49.0/24 | WHOIS (ARIN) | HealthGrades, Inc. | US |
| 63.232.50.0/24 | WHOIS (ARIN) | Connextions.net, Inc | US |
| 63.232.52.0/24 | WHOIS (ARIN) | Ambassador Programs, Inc. | US |
| 63.232.53.0/24 | WHOIS (ARIN) | ABC LEGAL SERVICES | US |
| 63.232.58.0/24 | WHOIS (ARIN) | Alta Colleges / Derek Christensen | US |
| 63.232.59.0/24 | WHOIS (ARIN) | NWA - DOEd | US |
| 63.232.62.0/24 | WHOIS (ARIN) | Global Payments Inc. | US |
| 63.232.63.0/24 | WHOIS (ARIN) | NetSuite Inc. | US |
| 63.232.64.0/24 | BGP route | AS401246 Silicon Prairie Portal & Exchange LLC | — |
| 63.232.64.0/24 | WHOIS (ARIN) | SILICON PRAIRIE PORTAL & EXCHA | US |
| 63.232.72.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.73.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.76.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.77.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.81.0/24 | WHOIS (ARIN) | Qwest Communications Company, LLC | US |
| 63.232.87.0/24 | BGP route | AS53261 Affinity Plus Federal Credit Union | — |
| 63.232.92.0/24 | BGP route | AS398895 Hazelden Betty Ford Foundation | — |
| 63.232.121.0/24 | BGP route | AS16915 Minnesota Twins, LLC | — |
| 63.232.171.0/24 | BGP route | AS62478 Cradlepoint Inc. | — |
| 63.232.197.0/24 | BGP route | AS33274 Fairview Health Services | — |
| 63.232.206.0/24 | BGP route | AS54573 Brightstar Global Solutions Corporation | — |
| 63.232.224.0/24 | BGP route | AS10753 Level 3 Parent, LLC | — |
| 63.232.225.0/24 | BGP route | AS10753 Level 3 Parent, LLC | — |
| 63.232.231.0/24 | BGP route | AS12113 Dawn Food Products, Inc. | — |
| 63.232.236.0/24 | BGP route | AS53316 CHEETAHMAIL | — |
| 63.232.248.0/24 | BGP route | AS15185 The Hibbert Group | — |
| 63.232.249.0/24 | BGP route | AS19546 R. C. Willey Home Furnishings | — |
| 63.232.250.0/24 | BGP route | AS3356 Level 3 Parent, LLC | — |
| 63.233.60.0/24 | BGP route | AS396908 Laurens Technologies Internet Services | — |
| 63.233.63.0/24 | BGP route | AS11962 Empire Today LLC | — |
| 63.233.79.0/24 | BGP route | AS19031 CU*Answers, Inc. | — |
| 63.233.90.0/24 | BGP route | AS203 Level 3 Parent, LLC | — |
| 63.233.105.0/24 | BGP route | AS21509 Apollo Management, L.P. | — |
| 63.233.112.0/24 | BGP route | AS20940 Akamai International B.V. | — |
| 63.233.126.0/24 | BGP route | AS20940 Akamai International B.V. | — |
| 63.233.196.0/24 | BGP route | AS402260 University of Colorado Medicine | — |
| 63.233.223.0/24 | BGP route | AS396908 Laurens Technologies Internet Services | — |
| 63.234.6.0/24 | BGP route | AS3356 Level 3 Parent, LLC | — |
| 63.234.29.0/24 | BGP route | AS63182 RapidScale, Inc | — |
| 63.234.30.0/24 | BGP route | AS14161 Land O'Lakes, Inc. | — |
| 63.234.35.0/24 | BGP route | AS395051 POWDR CORP | — |
| 63.234.94.0/24 | BGP route | AS53655 Advanced Call Center Technologies, LLC | — |
| 63.234.150.0/24 | BGP route | AS400530 Dubuque Community Schools | — |
| 63.234.186.0/24 | BGP route | AS399604 EXL SERVICE.COM, LLC | — |
| 63.234.207.0/24 | BGP route | AS399303 Volli Communications, Inc | — |
| 63.234.209.0/24 | BGP route | AS18795 University of La Verne | — |
| 63.234.214.0/24 | BGP route | AS35917 Tesoro Companies, Inc. | — |
| 63.234.230.0/24 | BGP route | AS17164 CentraCare Health | — |
| 63.234.240.0/24 | BGP route | AS21509 Apollo Management, L.P. | — |
| 63.234.241.0/24 | BGP route | AS33603 DOMINOS PIZZA, LLC | — |
| 63.235.13.0/24 | BGP route | AS397818 Lumentum Operations LLC | — |