| AS3 | Massachusetts Institute of Technology (MIT) |  | |
| AS4 | University of Southern California (University of Southern California) |  | |
| AS6 | Bull HN Information Systems (Bull HN Information Systems) |  | |
| AS7 | DSTL Defence Science and Technology Laboratory |  | |
| AS8 | Rice University (Rice University) | ||
| AS9 | Carnegie Mellon University (Carnegie Mellon University) |  | |
| AS10 | EJU1-RIPE | ||
| AS11 | Harvard University (Harvard University) | ||
| AS19 | Leidos (Leidos) | ||
| AS20 | University of Rochester (University of Rochester) |  | |
| AS22 | NNIC AS22 (NNIC AS22) | ||
| AS25 | UCB (UCB) | ||
| AS26 | Cornell (Cornell) | | |
| AS30 | SRI-AICNET (SRI-AICNET) | ||
| AS33 | Hewlett-Packard AS33 (Hewlett-Packard AS33) | ||
| AS35 | MITRE (MITRE) | ||
| AS42 | Packet Clearing House AS42 (Woodynet, PCH) |  | |
| AS46 | Rutgers University (Rutgers, the State University of New Jersey) | | |
| AS49 | NIST (NIST) | ||
| AS50 | Oak Ridge National Laboratory (Oak Ridge National Laboratory) | ||
| AS55 | UPENN (Penn) | | |
| AS57 | Northern Lights GigaPOP (Northern Lights GigaPOP) | | |
| AS59 | University of Wisconsin - Madison (University of Wisconsin - Madison) | ||
| AS62 | CyrusOne (CyrusOne) | | |
| AS70 | National Library of Medicine (National Library of Medicine) | ||
| AS71 | Hewlett-Packard AS71 (Hewlett-Packard AS71) | ||
| AS72 | Schlumberger Limited (Schlumberger) | ||
| AS73 | University of Washington (University of Washington) | ||
| AS80 | GE-CRD (GE-CRD) | ||
| AS81 | MCNC (NCREN) | ||
| AS87 | Indiana University (Indiana University) | | |
| AS88 | Princeton University (Princeton University) | ||
| AS100 | FMC Central Engineering Laboratories (FMC Central Engineering Laboratories) | ||
| AS101 | Pacific Northwest Gigapop (PNWGP) | | |
| AS103 | Northwestern University (Northwestern University) | ||
| AS104 | University of Colorado at Boulder (University of Colorado at Boulder) | ||
| AS109 | Cisco Systems, Inc. (Cisco) | ||
| AS111 | Boston University (BU) | | |
| AS112 | DNS-OARC-112 (DNS-OARC-112) | | |
| AS122 | UPMC AS122 (University of Pittsburgh Medical Center) | ||
| AS123 | Air Force Systems Networking (Air Force Systems Networking) | ||
| AS125 | Honeywell International (Honeywell International) |  | |
| AS126 | DoD Network Information Center AS126 (DoD Network Information Center AS126) | ||
| AS128 | Advanced Decision Systems (Advanced Decision Systems) | ||
| AS134 | CORONA-GW-AS (CORONA-GW-AS) | ||
| AS137 | GARR (GARR, The Italian Academic and Research Network) |  | |
| AS151 | HPE | ||
| AS160 | University of Chicago (UChicago) | | |
| AS173 | NTT Network Innovation Laboratories (NTT Network Innovation Laboratories) |  | |
| AS174 | COGENT Cogent Communications, Inc. (Cogent Communications, Inc.) | |