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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
About Energy Sciences Network
The Energy Sciences Network (ESnet) is a high-speed computer network serving United States Department of Energy (DOE) scientists and their collaborators worldwide. It is managed by staff at the Lawrence Berkeley National Laboratory.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 130.20.0.0/16 | 65.5K |
90.8%
|
ESnet | US | Washington | Richland |
| 130.20.128.0/17 | 32.8K |
91.2%
|
ESnet | US | Washington | Richland |
| 130.20.64.0/18 | 16.4K |
87.3%
|
ESnet | US | Washington | Richland |
| 130.20.32.0/19 | 8.2K |
92.7%
|
ESnet | US | Washington | Kennewick |
| 130.20.16.0/20 | 4.1K |
93.6%
|
ESnet | US | — | — |
| 130.20.8.0/21 | 2.0K |
94.2%
|
ESnet | US | — | — |
| 130.20.4.0/22 | 1.0K |
94.3%
|
ESnet | US | — | — |
| 192.101.100.0/22 | 1.0K |
4.0%
|
ESnet | US | — | — |
| 192.101.104.0/22 | 1.0K |
12.3%
|
ESnet | US | — | — |
| 130.20.2.0/23 | 512 |
93.6%
|
ESnet | US | — | — |
| 192.101.108.0/23 | 512 |
5.3%
|
ESnet | US | — | — |
| 130.20.1.0/24 | 256 |
93.8%
|
ESnet | US | — | — |
| 192.35.193.0/24 | 256 |
6.3%
|
ESnet | US | Washington | Richland |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS3428 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 |
|---|---|---|
| 130.20.0.0/16 | 5,115 | 2026-07-21 21:16:11 |
| 192.101.100.0/22 | 4,474 | 2026-07-21 21:17:57 |
| 192.35.193.0/24 | 4,428 | 2026-07-21 21:16:11 |
| 192.101.104.0/22 | 4,420 | 2026-07-21 21:16:11 |
| 192.101.108.0/23 | 4,344 | 2026-07-21 21:16:11 |
Frequently Asked Questions
What is AS3428?
AS3428 is an Autonomous System Number assigned to ESnet. 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 AS3428 announce?
AS3428 announces 68.4K IPv4 addresses distributed across 13 routed CIDR prefixes. The network is registered in United States.
Who operates AS3428?
AS3428 is operated by ESnet. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS3428 registered in?
AS3428 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
