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Organization

ESnet

IPv4 addresses
734,720
CIDR ranges
45
Category
enterprise
BGP prefixes announced
41

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.

69/100
Moderate
How this score is built
  • 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.

Founded
1986

Operates 1 network present at 10 internet exchanges with a selective peering policy.

Summary from Wikipedia, CC BY-SA 4.0 · Data from Wikidata

Countries served by ESnet

Every country where this organization has IPv4 allocations, ranked by IPs held.

ASNs owned by ESnet

ASNNameIPsPrefixesCountry
AS291 ESnet 262.1K 1 US
AS292 ESnet 262.1K 1 US
AS293 ESnet 140.3K 23 US
AS3428 ESnet 68.4K 13 US
AS3431 ESnet 1.0K 4 US
AS3425 ESnet 512 2 US
AS3443 ESnet 256 1 US

Largest CIDR ranges

CIDRIPsPTR DensityASNCountryStateCity
198.124.0.0/14 262.1K
0.9%
AS291 US Tennessee Oak Ridge
198.128.0.0/14 262.1K
3.0%
AS292 US California Oakland
130.20.0.0/16 65.5K
90.8%
AS3428 US Washington Richland
134.55.0.0/16 65.5K
2.5%
AS293 US
134.167.0.0/16 65.5K
0.1%
AS293 US Tennessee Maryville
130.20.128.0/17 32.8K
91.2%
AS3428 US Washington Richland
130.20.64.0/18 16.4K
87.3%
AS3428 US Washington Richland
130.20.32.0/19 8.2K
92.7%
AS3428 US Washington Kennewick
130.20.16.0/20 4.1K
93.6%
AS3428 US
130.20.8.0/21 2.0K
94.2%
AS3428 US
130.20.4.0/22 1.0K
94.3%
AS3428 US
192.101.100.0/22 1.0K
4.0%
AS3428 US
192.101.104.0/22 1.0K
12.3%
AS3428 US
192.124.52.0/22 1.0K
7.4%
AS293 US
192.124.56.0/22 1.0K
0.8%
AS293 US
192.188.24.0/22 1.0K
6.3%
AS293 US
130.20.2.0/23 512
93.6%
AS3428 US
192.74.214.0/23 512
1.8%
AS293 US
192.101.108.0/23 512
5.3%
AS3428 US
192.124.50.0/23 512
0.0%
AS293 US
192.188.28.0/23 512
7.2%
AS293 US
192.188.32.0/23 512
11.7%
AS293 US
192.188.40.0/23 512
10.7%
AS293 US
199.201.154.0/23 512
0.0%
AS293 US
130.20.1.0/24 256
93.8%
AS3428 US
192.5.166.0/24 256
43.0%
AS3431 US
192.35.193.0/24 256
6.3%
AS3428 US Washington Richland
192.73.7.0/24 256
11.7%
AS3431 US
192.73.62.0/24 256
13.3%
AS3431 US
192.74.210.0/24 256
9.4%
AS293 US
192.74.211.0/24 256
53.5%
AS3425 US
192.74.212.0/24 256
0.0%
AS3425 US
192.74.217.0/24 256
0.0%
AS293 US
192.107.175.0/24 256
10.2%
AS293 US
192.150.242.0/24 256
29.3%
AS3431 US
192.188.22.0/24 256
3.9%
AS3443 US
192.188.23.0/24 256
0.0%
AS293 US
192.188.31.0/24 256
0.0%
AS293 US
192.188.34.0/24 256
24.6%
AS293 US
192.188.37.0/24 256
0.0%
AS293 US
198.99.246.0/24 256
0.0%
AS293 US
198.207.238.0/24 256
0.0%
AS293 US
199.201.153.0/24 256
0.0%
AS293 US
199.201.157.0/24 256
0.0%
AS293 US
199.201.158.0/24 256
0.0%
AS293 US

Frequently Asked Questions

How many IP addresses does ESnet own?

ESnet controls 734.7K IPv4 addresses distributed across 45 CIDR ranges. The organization is registered in United States.

What ASNs does ESnet operate?

ESnet operates 7 Autonomous Systems. Each ASN represents an independently routed network that ESnet manages for internet traffic delivery.

What type of organization is ESnet?

ESnet is categorized as enterprise. This classification is based on the organization's primary use of its IP address allocations.

Last updated: 2026-07-20 11:10:33 UTC
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