AS1909
San Diego Supercomputer Center
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Enterprise allocation +4
- Trust score 69 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About San Diego Supercomputer Center
The San Diego Supercomputer Center (SDSC) is an organized research unit of the University of California, San Diego. Founded in 1985, it was one of the five original NSF supercomputing centers, along with the Pittsburgh Supercomputing Center, the Cornell National Supercomputing Facility, the John von Neumann National Supercomputing Center, and the National Center for Supercomputing Applications.
Network profile
Source: PeeringDB →Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 192.172.226.0/24 | 256 |
66.8%
|
San Diego Supercomputer Center | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS1909 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 192.172.226.0/24 | 5,325 | 2026-07-26 14:15:41 |
Frequently Asked Questions
What is AS1909?
AS1909 is an Autonomous System Number assigned to San Diego Supercomputer Center. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS1909 announce?
AS1909 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.
Who operates AS1909?
AS1909 is operated by San Diego Supercomputer Center. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS1909 registered in?
AS1909 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
