| 199.0.0.0/8 | WHOIS (ARIN) | American Registry for Internet Numbers | US |
| 199.172.0.0/15 | BGP route | AS701 Verizon Business | — |
| 199.172.0.0/15 | WHOIS (ARIN) | Verizon Business | US |
| 199.172.0.0/15 | ARIN assigned | — | US |
| 199.172.192.0/18 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.192.0/18 | WHOIS (ARIN) | Logic Communications Ltd | BM |
| 199.173.160.0/20 | WHOIS (ARIN) | Integration Consortium, Inc. | US |
| 199.172.80.0/21 | WHOIS (ARIN) | FASTech Integration, Inc. | US |
| 199.172.128.0/21 | WHOIS (ARIN) | UUNET/Chris Morrow | US |
| 199.173.224.0/21 | BGP route | AS11985 Social Security Administration | — |
| 199.173.224.0/21 | WHOIS (ARIN) | Social Security Administration | US |
| 199.172.180.0/22 | WHOIS (ARIN) | Software & Technologies | US |
| 199.172.184.0/22 | WHOIS (ARIN) | Hunter Douglas | US |
| 199.173.224.0/22 | BGP route | AS11985 Social Security Administration | — |
| 199.173.228.0/22 | BGP route | AS11985 Social Security Administration | — |
| 199.173.232.0/22 | BGP route | AS4459 KDDI America Inc. | — |
| 199.173.232.0/22 | WHOIS (ARIN) | Ajinomoto U.S.A., Inc. | US |
| 199.172.8.0/23 | WHOIS (ARIN) | ILINK, Ltd. | US |
| 199.172.88.0/23 | WHOIS (ARIN) | Interquest | US |
| 199.172.138.0/23 | WHOIS (ARIN) | CDP, Inc. | US |
| 199.172.228.0/23 | BGP route | AS36549 WestTel Ltd. | — |
| 199.173.154.0/23 | WHOIS (ARIN) | National Transportation Safety Board | US |
| 199.173.236.0/23 | WHOIS (ARIN) | United Video Satellite Group, Inc. | US |
| 199.173.238.0/23 | WHOIS (ARIN) | United Video Satellite Group, Inc. | US |
| 199.172.2.0/24 | WHOIS (ARIN) | BALR Corporation | US |
| 199.172.3.0/24 | WHOIS (ARIN) | Lincoln County Tech Group | US |
| 199.172.6.0/24 | WHOIS (ARIN) | Levi Strauss and Company | US |
| 199.172.8.0/24 | BGP route | AS6220 inContact Inc. | — |
| 199.172.9.0/24 | BGP route | AS6220 inContact Inc. | — |
| 199.172.10.0/24 | WHOIS (ARIN) | Micro Age / Abacus | US |
| 199.172.14.0/24 | WHOIS (ARIN) | MAXM Systems Corporation | US |
| 199.172.15.0/24 | WHOIS (ARIN) | Synetics | US |
| 199.172.33.0/24 | WHOIS (ARIN) | JVN Corporation | US |
| 199.172.34.0/24 | WHOIS (ARIN) | Bookwire, Inc. | US |
| 199.172.43.0/24 | WHOIS (ARIN) | RBC, Inc. | US |
| 199.172.47.0/24 | WHOIS (ARIN) | Custom Computing System | US |
| 199.172.51.0/24 | WHOIS (ARIN) | Bankers Trust | US |
| 199.172.52.0/24 | WHOIS (ARIN) | American Steel and Wire | US |
| 199.172.53.0/24 | WHOIS (ARIN) | Enthusiastic Software | US |
| 199.172.60.0/24 | WHOIS (ARIN) | Thursby Software Systems | US |
| 199.172.61.0/24 | WHOIS (ARIN) | Lancet Technology | US |
| 199.172.121.0/24 | WHOIS (ARIN) | Internet Communications | US |
| 199.172.136.0/24 | BGP route | AS13462 Institute of Electrical and Electronics Engineers, Inc | — |
| 199.172.136.0/24 | WHOIS (ARIN) | Institute of Electrical and Electronics Engineers, Inc | US |
| 199.172.140.0/24 | WHOIS (ARIN) | Metrocall, Inc | US |
| 199.172.142.0/24 | WHOIS (ARIN) | Power Net | US |
| 199.172.143.0/24 | WHOIS (ARIN) | UJA | US |
| 199.172.161.0/24 | WHOIS (ARIN) | UUNET Technologies, Inc. | US |
| 199.172.165.0/24 | WHOIS (ARIN) | Yournet | US |
| 199.172.169.0/24 | BGP route | AS10361 Bloomberg, LP | — |
| 199.172.169.0/24 | WHOIS (ARIN) | Bloomberg Financial Markets Limited Partnership | US |
| 199.172.170.0/24 | WHOIS (ARIN) | Docunet Corporation | US |
| 199.172.179.0/24 | WHOIS (ARIN) | Advance Publications Inc. | US |
| 199.172.189.0/24 | WHOIS (ARIN) | inCASE Corporation | US |
| 199.172.196.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.197.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.198.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.203.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.206.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.210.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.211.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.214.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.216.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.218.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.219.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.220.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.225.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.226.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.227.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.230.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.233.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.240.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.241.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.242.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.245.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.172.251.0/24 | BGP route | AS3855 Logic Communications Ltd | — |
| 199.173.148.0/24 | WHOIS (ARIN) | Systech Corp | US |
| 199.173.149.0/24 | WHOIS (ARIN) | Human Rights Watch | US |
| 199.173.152.0/24 | WHOIS (ARIN) | Microstrategy, Inc. | US |
| 199.173.153.0/24 | WHOIS (ARIN) | Gulfnet Kuwait | KW |
| 199.173.157.0/24 | WHOIS (ARIN) | Vocal Technologies Limited | US |
| 199.173.158.0/24 | WHOIS (ARIN) | Axis Communications | US |
| 199.173.159.0/24 | WHOIS (ARIN) | PADS Software | US |
| 199.172.7.128/26 | WHOIS (ARIN) | IMMUCOR, INC | US |