AS131 — UCSB-NET-AS
AS131 announces 7 IPv4 prefixes covering 132,100 addresses and 3 IPv6 prefixes.
About this network
An early allocation (UCSB-NET-AS) serving the University of California, Santa Barbara.
What it's used for
- Campus, research, and administrative networking for UC Santa Barbara.
Notable
- An institutional / "eyeball" network for a research university, not commercial hosting. The low AS number reflects UCSB's very early role on the network.
Interesting
- UCSB hosted one of the first four ARPANET nodes in 1969, making it a foundational site in the internet's origins.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 128.111.0.0/16
- 137.164.23.8/31
- 137.164.23.90/31
- 169.231.0.0/16
- 192.35.222.0/24
- 192.150.216.0/23
- 199.120.153.0/24
- 2607:f378::/32
- 2607:f380:1::118:9a41:7080/123
- 2607:f380:1::118:9a41:75a0/123
Upstream networks
Adjacent networks
BGP / ASN / CIDR
awaiting query
enter an AS number, IP address, or organisation name above
IPv4
resolving...
IPv6
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Search Results
IPv4 Prefixes
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IPv6 Prefixes
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Total Prefixes
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Unique /24s
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⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED