Prefix 133.51.0.0/16, is normally announced by AS37917 UTINS University of Tsukuba, JP.
But beginning at 2023-05-12 20:01:51, the same prefix (133.51.0.0/16) was also announced by ASN 271609.
This was detected by 2 BGPMon peers.
| Expected |
|---|
| Start time: 2023-05-12 20:01:51 UTC |
| Expected prefix: 133.51.0.0/16 |
| Expected ASN: 37917 (UTINS University of Tsukuba, JP) |
| Event Details |
|---|
| Detected advertisement: 133.51.0.0/16 |
| Detected Origin ASN 271609 () |
| Detected AS Path 28300 271609 271609 |
| Detected by number of BGPMon peers: 2 |