Curated ranking
Top 25 Largest ASNs by Prefix Count
The 25 Autonomous Systems announcing the most IP prefixes in the Whisper Internet Directory infrastructure database, ranked by routed prefix count.
The ranking
| Rank | Entity | announced prefixes |
|---|---|---|
| 1 | AS16509 | 25,087 |
| 2 | AS9808 | 21,408 |
| 3 | AS577 | 16,297 |
| 4 | AS8151 | 13,843 |
| 5 | AS18403 | 8,464 |
| 6 | AS12479 | 8,307 |
| 7 | AS7552 | 8,148 |
| 8 | AS39891 | 7,423 |
| 9 | AS47331 | 6,573 |
| 10 | AS22773 | 6,407 |
| 11 | AS13335 | 5,804 |
| 12 | AS45609 | 5,714 |
| 13 | AS56046 | 5,364 |
| 14 | AS9498 | 5,270 |
| 15 | AS9009 | 5,233 |
| 16 | AS4538 | 5,168 |
| 17 | AS7545 | 5,062 |
| 18 | AS20473 | 5,018 |
| 19 | AS20940 | 4,727 |
| 20 | AS20115 | 4,712 |
| 21 | AS11492 | 4,710 |
| 22 | AS6327 | 4,708 |
| 23 | AS174 | 4,545 |
| 24 | AS56041 | 4,530 |
| 25 | AS212238 | 4,475 |