AS16
Lawrence Berkeley National Laboratory
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 Lawrence Berkeley National Laboratory
Lawrence Berkeley National Laboratory is a federally funded research and development center in the hills of Berkeley, California, and Oakland, California, United States. Established in 1931 by the University of California (UC), the laboratory is sponsored by the United States Department of Energy and administered by the UC system.
AS16 — global IP footprint
Cities where AS16 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 128.3.0.0/16 | 65.5K |
11.7%
|
Lawrence Berkeley National Laboratory | US | California | Berkeley |
| 131.243.0.0/16 | 65.5K |
16.7%
|
Lawrence Berkeley National Laboratory | US | California | San Ramon |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS16 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 |
|---|---|---|
| 128.3.0.0/16 | 5,474 | 2026-07-24 13:31:45 |
| 131.243.0.0/16 | 5,385 | 2026-07-24 13:31:45 |
Frequently Asked Questions
What is AS16?
AS16 is an Autonomous System Number assigned to Lawrence Berkeley National Laboratory. 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 AS16 announce?
AS16 announces 131.1K IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in United States.
Who operates AS16?
AS16 is operated by Lawrence Berkeley National Laboratory. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS16 registered in?
AS16 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
