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AS31

California Institute of Technology
Announced prefixes
15
Upstreams
3
Peers
0
Downstreams
0

Adjacent ASNs

UpstreamAS2152AS2152AS2153AS2153AS13335AS13335AS31

Neighbor nodes aren't clickable. To look up an ASN, use the ASN lookup page

All Neighbor ASNs

Upstream3

Buys transit from them

  • AS2152
  • AS2153
  • AS13335

Peer0

Settlement-free traffic exchange

None

Downstream0

Buys transit from this AS

None

Recent Prefix Changes

latest 6

IP prefixes this ASN started or stopped announcing (derived by diffing successive data syncs).

  • Announced137.164.24.72/292026-09-07
  • Withdrawn137.164.3.74/312026-09-07
  • Withdrawn137.164.24.72/292026-09-07
  • Announced137.164.24.72/292026-08-31
  • Withdrawn137.164.24.72/292026-08-31
  • Announced137.164.3.204/312026-07-17

Data: local · Updated 2026-09-08 05:09:29