// ASN
AS55390
TUSNET Tokyo University of Science, JP
Detailed information about the Autonomous System. Need another one? Look up a different ASN.
- ASN
- AS55390
- Organization
- Tokyo University of Science
- Description
- TUSNET Tokyo University of Science, JP
- Registry (RIR)
- JPIRR
- Created
- 2010-11-12
- Updated
- 2025-10-02
- IPv4 Prefixes
- 3
- IPv6 Prefixes
- 1
IPv4 Prefixes
3 total133.31.0.0/16 133.31.0.0/17 133.31.128.0/17
IPv6 Prefixes
1 total2001:df0:cf::/48
What is AS55390?
AS55390 is an Autonomous System Number (ASN) assigned to Tokyo University of Science. An ASN identifies a network or group of IP prefixes operated under a common routing policy in the BGP protocol.
Looking for more ASN data?
Use our ASN Lookup Tool for real-time WHOIS queries, or explore our API documentation to integrate ASN data into your applications.