Machine readable ARPANET logical maps. From data collected by Noel J. Chiappa.
| IMP | Site | Modems | Hosts |
|---|---|---|---|
| 1 | UCLA | 2,3,11 | |
| 2 | SRI | 1,3,16,22 | |
| 3 | UCSB | 1,2 | |
| 4 | UTAH | 12,22,23,25 | |
| 5 | BBN | 6,9,21 | |
| 6 | MIT | 5,10,12 | |
| 7 | RAND | 1,8,21 | |
| 8 | SDC | 7,23 | |
| 9 | HARVARD | 5,17 | |
| 10 | LL | 6,18 | |
| 11 | STANFORD | 7,16 | |
| 12 | ILLIONIS | 4,6 | |
| 13 | CASE | 14,18 | |
| 14 | CMU | 13,17 | |
| 15 | BURROUGHS | 9,19 | |
| 16 | AMES | 2,11 | |
| 17 | MITRE | 14,20 | |
| 18 | RADC | 10,14 | |
| 19 | NBS | 15,20 | |
| 20 | ETAC | 17,19 | |
| 21 | TINKER | 5,7 | |
| 22 | MCCELLAN | 2,4 | |
| 23 | USC | 4,8 | |
| 24 | GWC | 13,25 | |
| 25 | NCAR | 4,24 |