| 199.0.0.0/8 | WHOIS (ARIN) | American Registry for Internet Numbers | US |
| 199.106.0.0/15 | BGP route | AS7018 AT&T Enterprises, LLC | — |
| 199.106.0.0/15 | WHOIS (ARIN) | AT&T Enterprises, LLC | US |
| 199.106.0.0/15 | ARIN assigned | — | US |
| 199.106.96.0/19 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.96.0/19 | WHOIS (ARIN) | CERFnet customer - Qualcomm, Inc. | US |
| 199.107.192.0/19 | BGP route | AS54690 California Lutheran University | — |
| 199.107.192.0/19 | WHOIS (ARIN) | CERFnet customer - California Lutheran University | US |
| 199.106.208.0/20 | BGP route | AS4264 California Education and Research Federation Network | — |
| 199.107.128.0/20 | WHOIS (ARIN) | CERFnet customer - Xircom | US |
| 199.106.8.0/21 | WHOIS (ARIN) | CERFnet customer - University of San Diego | US |
| 199.106.80.0/21 | WHOIS (ARIN) | CERFnet customer - Pt. Loma Nazarene College | US |
| 199.106.88.0/21 | BGP route | AS4264 California Education and Research Federation Network | — |
| 199.106.160.0/21 | BGP route | AS4262 California Education and Research Federation Network | — |
| 199.106.232.0/21 | BGP route | AS4264 California Education and Research Federation Network | — |
| 199.107.152.0/21 | WHOIS (ARIN) | STSN - Redwood City | US |
| 199.107.160.0/21 | WHOIS (ARIN) | Sterling Communications, Inc. | US |
| 199.107.184.0/21 | BGP route | AS4264 California Education and Research Federation Network | — |
| 199.107.232.0/21 | BGP route | AS4264 California Education and Research Federation Network | — |
| 199.107.240.0/21 | WHOIS (ARIN) | CERFnet customer - GTE Government Systems | US |
| 199.106.24.0/22 | WHOIS (ARIN) | CERFnet customer - SAIC | US |
| 199.106.28.0/22 | WHOIS (ARIN) | CERFnet customer - Hitachi Data Systems | US |
| 199.106.44.0/22 | WHOIS (ARIN) | CERFnet customer - Jaycor | US |
| 199.106.48.0/22 | WHOIS (ARIN) | CERFnet customer - Jaycor | US |
| 199.106.52.0/22 | WHOIS (ARIN) | CERFnet customer - Viasat | US |
| 199.106.56.0/22 | WHOIS (ARIN) | CERFnet customer - Viasat | US |
| 199.106.96.0/22 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.116.0/22 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.156.0/22 | WHOIS (ARIN) | CI - AT&T MSS-NB Production Facility - AZ SID-6732 | US |
| 199.106.164.0/22 | WHOIS (ARIN) | SID-15031 CI - GOGO LLC | US |
| 199.106.200.0/22 | WHOIS (ARIN) | CERFnet customer - PSICOR, Inc. | US |
| 199.107.8.0/22 | WHOIS (ARIN) | CERFnet customer - Tactech, Inc. | US |
| 199.107.12.0/22 | WHOIS (ARIN) | Network Intensive | US |
| 199.107.16.0/22 | WHOIS (ARIN) | SID-18051 CI -Administrative Office of the United States Courts | US |
| 199.107.20.0/22 | BGP route | AS13788 US Courts | — |
| 199.107.20.0/22 | WHOIS (ARIN) | SID-18051 CI -Administrative Office of the United States Courts | US |
| 199.107.96.0/22 | WHOIS (ARIN) | CERFnet customer - Azusa Pacific University | US |
| 199.107.100.0/22 | WHOIS (ARIN) | CERFnet customer - Western Digital | US |
| 199.107.168.0/22 | WHOIS (ARIN) | CERFnet customer - Credo Systems | US |
| 199.107.248.0/22 | WHOIS (ARIN) | CERFnet customer - GTE Government Systems | US |
| 199.106.6.0/23 | WHOIS (ARIN) | CERFnet San Diego ISDN Subnets | US |
| 199.106.18.0/23 | WHOIS (ARIN) | CERFnet customer - San Diego County Sheriff's Department | US |
| 199.106.20.0/23 | WHOIS (ARIN) | CERFnet customer - Western Scientific | US |
| 199.106.22.0/23 | WHOIS (ARIN) | CERFnet customer - SAIC | US |
| 199.106.62.0/23 | WHOIS (ARIN) | CERFnet customer - Digigami | US |
| 199.106.104.0/23 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.114.0/23 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.120.0/23 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.124.0/23 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.204.0/23 | WHOIS (ARIN) | CERFnet customer - PSICOR, Inc. | US |
| 199.106.224.0/23 | WHOIS (ARIN) | CERFnet customer - Digital Gene Technology | US |
| 199.106.230.0/23 | WHOIS (ARIN) | Atcom Information | US |
| 199.106.250.0/23 | WHOIS (ARIN) | Delphi Automotive Systems Corp. (Subsidiary of General Motors) | US |
| 199.107.0.0/23 | WHOIS (ARIN) | CERFnet customer - Gemini Technology | US |
| 199.107.2.0/23 | WHOIS (ARIN) | CERFnet customer - Advanced Software Research, Inc. | US |
| 199.107.24.0/23 | WHOIS (ARIN) | CI - Blizzard Entertainment, Inc. SID-18121 | US |
| 199.107.104.0/23 | WHOIS (ARIN) | CERFnet customer - Internet Broadcast Systems | US |
| 199.107.114.0/23 | WHOIS (ARIN) | CERFnet customer - Disney Worldwide Services Singapore | US |
| 199.107.252.0/23 | WHOIS (ARIN) | CERFnet customer - GTE Government Systems | US |
| 199.106.61.0/24 | WHOIS (ARIN) | CERFnet San Diego ISDN Testing | US |
| 199.106.66.0/24 | WHOIS (ARIN) | SVI America Corp. | US |
| 199.106.67.0/24 | WHOIS (ARIN) | AawsomNet | US |
| 199.106.68.0/24 | WHOIS (ARIN) | SVI America Corp. | US |
| 199.106.69.0/24 | WHOIS (ARIN) | Danger, Inc. | US |
| 199.106.76.0/24 | WHOIS (ARIN) | CERFnet customer - Brooktree | US |
| 199.106.77.0/24 | WHOIS (ARIN) | CERFnet 800-SBA ISDN Network | US |
| 199.106.78.0/24 | WHOIS (ARIN) | CERFnet ISDN | US |
| 199.106.88.0/24 | BGP route | AS399604 EXL SERVICE.COM, LLC | — |
| 199.106.100.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.101.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.102.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.103.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.106.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.107.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.108.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.109.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.110.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.111.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.112.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.113.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.122.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.123.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.126.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.127.0/24 | BGP route | AS11030 Qualcomm, Inc. | — |
| 199.106.180.0/24 | BGP route | AS6319 Marriot Corporation | — |
| 199.107.16.0/24 | BGP route | AS13788 US Courts | — |
| 199.107.17.0/24 | BGP route | AS13788 US Courts | — |
| 199.107.18.0/24 | BGP route | AS13788 US Courts | — |
| 199.107.19.0/24 | BGP route | AS13788 US Courts | — |
| 199.107.32.0/24 | BGP route | AS394572 Tyler Technologies, Inc. | — |
| 199.107.38.0/24 | BGP route | AS13788 US Courts | — |
| 199.107.120.0/24 | BGP route | AS36157 Acer America Corporation | — |
| 199.107.155.0/24 | BGP route | AS399486 12651980 CANADA INC. | — |
| 199.107.160.0/24 | BGP route | AS11045 Sterling Communications, Inc. | — |
| 199.107.161.0/24 | BGP route | AS11045 Sterling Communications, Inc. | — |
| 199.107.162.0/24 | BGP route | AS11045 Sterling Communications, Inc. | — |
| 199.107.163.0/24 | BGP route | AS11045 Sterling Communications, Inc. | — |
| 199.107.164.0/24 | BGP route | AS11045 Sterling Communications, Inc. | — |
| 199.107.165.0/24 | BGP route | AS11045 Sterling Communications, Inc. | — |
| 199.107.166.0/24 | BGP route | AS11045 Sterling Communications, Inc. | — |
| 199.107.167.0/24 | BGP route | AS11045 Sterling Communications, Inc. | — |