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Autonomous System

AS2381

WiscNet

Announced IPs
441,344
CIDR prefixes
96
ASN
AS2381

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 v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

About WiscNet

WiscNet is a non-profit organization that maintains a computer network for Internet access for school districts, colleges, universities, and libraries in the U.S. state of Wisconsin.

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

Network profile

Source: PeeringDB →
Network type Educational/Research
Traffic level 200-300Gbps
Geographic scope Regional
Traffic ratio Mostly Inbound
Peering policy Open
IRR record RADB::AS-WISCNET-WRIPS

Present at 5 internet exchanges: MadIX, Equinix Chicago, MICE: Shared Peering, ChIX, Chicago Open Pipes

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
140.189.0.0/16 65.5K
3.0%
WiscNet US — —
165.128.0.0/16 65.5K
0.1%
WiscNet US Wisconsin La Crosse
170.125.0.0/16 65.5K
0.2%
WiscNet US Wisconsin Madison
216.56.0.0/16 65.5K
6.3%
WiscNet US Wisconsin Appleton
144.89.0.0/18 16.4K
0.1%
WiscNet US Wisconsin Beloit
199.197.64.0/18 16.4K
96.8%
WiscNet US Wisconsin Madison
143.109.64.0/19 8.2K
0.0%
WiscNet US — —
143.109.192.0/19 8.2K
0.0%
WiscNet US — —
198.150.128.0/19 8.2K
0.0%
WiscNet US Wisconsin Stevens Point
198.150.192.0/19 8.2K
36.8%
WiscNet US Wisconsin Dresser
205.213.32.0/19 8.2K
31.4%
WiscNet US Wisconsin Antigo
205.213.96.0/19 8.2K
19.0%
WiscNet US Wisconsin Madison
205.213.128.0/19 8.2K
36.9%
WiscNet US Wisconsin Kenosha
198.150.0.0/20 4.1K
12.7%
WiscNet US Wisconsin Madison
198.150.48.0/20 4.1K
0.8%
WiscNet US Wisconsin La Crosse
198.150.64.0/20 4.1K
3.1%
WiscNet US Wisconsin Green Bay
198.150.112.0/20 4.1K
0.0%
WiscNet US — —
198.150.240.0/20 4.1K
98.3%
WiscNet US Wisconsin Dresser
205.213.64.0/20 4.1K
10.5%
WiscNet US Wisconsin Jefferson
205.213.176.0/20 4.1K
55.2%
WiscNet US Wisconsin Sheboygan
205.213.224.0/20 4.1K
0.0%
WiscNet US Wisconsin Green Bay
198.150.32.0/21 2.0K
0.0%
WiscNet US — —
198.150.80.0/21 2.0K
0.0%
WiscNet US — —
198.150.160.0/21 2.0K
7.2%
WiscNet US — —
198.150.176.0/21 2.0K
37.2%
WiscNet US — —
198.150.224.0/21 2.0K
10.1%
WiscNet US — —
205.213.80.0/21 2.0K
0.8%
WiscNet US — —
205.213.168.0/21 2.0K
3.0%
WiscNet US — —
205.213.192.0/21 2.0K
47.9%
WiscNet US — —
205.213.216.0/21 2.0K
0.2%
WiscNet US — —
160.32.0.0/22 1.0K
9.7%
WiscNet US Wisconsin Eau Claire
198.150.16.0/22 1.0K
28.2%
WiscNet US — —
198.150.28.0/22 1.0K
0.0%
WiscNet US — —
198.150.40.0/22 1.0K
0.0%
WiscNet US — —
198.150.88.0/22 1.0K
0.0%
WiscNet US — —
198.150.100.0/22 1.0K
3.0%
WiscNet US — —
198.150.104.0/22 1.0K
0.0%
WiscNet US — —
198.150.168.0/22 1.0K
0.2%
WiscNet US — —
198.150.184.0/22 1.0K
1.5%
WiscNet US — —
198.150.236.0/22 1.0K
0.0%
WiscNet US — —
205.213.4.0/22 1.0K
3.0%
WiscNet US — —
205.213.12.0/22 1.0K
29.0%
WiscNet US — —
205.213.20.0/22 1.0K
24.4%
WiscNet US — —
205.213.28.0/22 1.0K
4.8%
WiscNet US — —
205.213.88.0/22 1.0K
50.5%
WiscNet US — —
205.213.160.0/22 1.0K
5.8%
WiscNet US — —
205.213.204.0/22 1.0K
1.7%
WiscNet US — —
205.213.208.0/22 1.0K
0.4%
WiscNet US — —
205.213.244.0/22 1.0K
2.1%
WiscNet US — —
205.213.252.0/22 1.0K
48.4%
WiscNet US — —
208.85.28.0/22 1.0K
0.0%
WiscNet US Wisconsin La Crosse
198.150.20.0/23 512
0.4%
WiscNet US — —
198.150.26.0/23 512
0.0%
WiscNet US — —
198.150.46.0/23 512
1.0%
WiscNet US — —
198.150.96.0/23 512
5.9%
WiscNet US — —
198.150.174.0/23 512
0.0%
WiscNet US — —
198.150.190.0/23 512
0.0%
WiscNet US — —
198.150.232.0/23 512
0.0%
WiscNet US — —
199.233.44.0/23 512
1.8%
WiscNet US Wisconsin Janesville
204.128.234.0/23 512
0.0%
WiscNet US — —
204.128.236.0/23 512
0.0%
WiscNet US Wisconsin Milwaukee
204.128.240.0/23 512
0.8%
WiscNet US — —
205.213.0.0/23 512
0.2%
WiscNet US — —
205.213.10.0/23 512
0.0%
WiscNet US — —
205.213.18.0/23 512
4.9%
WiscNet US — —
205.213.24.0/23 512
14.5%
WiscNet US — —
205.213.94.0/23 512
0.8%
WiscNet US — —
205.213.164.0/23 512
0.0%
WiscNet US — —
205.213.212.0/23 512
47.1%
WiscNet US — —
205.213.242.0/23 512
0.0%
WiscNet US — —
64.189.15.0/24 256
99.2%
WiscNet US Wisconsin Milwaukee
148.59.44.0/24 256
6.3%
WiscNet US Wisconsin Janesville
192.156.230.0/24 256
0.8%
WiscNet US Wisconsin New Berlin
192.206.48.0/24 256
3.5%
WiscNet US Wisconsin Muskego
198.150.45.0/24 256
11.7%
WiscNet US — —
198.150.92.0/24 256
0.0%
WiscNet US — —
198.150.99.0/24 256
0.0%
WiscNet US — —
198.150.108.0/24 256
0.0%
WiscNet US — —
198.150.111.0/24 256
0.0%
WiscNet US — —
198.150.173.0/24 256
0.0%
WiscNet US — —
199.233.84.0/24 256
0.0%
WiscNet US — —
199.233.86.0/24 256
0.0%
WiscNet US — —
199.233.142.0/24 256
0.0%
WiscNet US — —
199.242.176.0/24 256
28.5%
WiscNet US Wisconsin Menasha
199.248.186.0/24 256
96.9%
WiscNet US Wisconsin Oshkosh
204.128.233.0/24 256
0.0%
WiscNet US Wisconsin Caledonia
204.128.238.0/24 256
0.0%
WiscNet US — —
204.128.242.0/24 256
0.0%
WiscNet US Wisconsin Wauwatosa
204.145.232.0/24 256
98.8%
WiscNet US Wisconsin La Crosse
205.213.2.0/24 256
0.8%
WiscNet US — —
205.213.9.0/24 256
10.2%
WiscNet US — —
205.213.16.0/24 256
95.3%
WiscNet US — —
205.213.93.0/24 256
0.0%
WiscNet US — —
205.213.201.0/24 256
0.0%
WiscNet US — —
205.213.214.0/24 256
0.0%
WiscNet US — —
205.213.240.0/24 256
3.1%
WiscNet US — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS2381 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
204.128.241.0/24 37,573 2026-11-09 17:31:09
199.233.86.0/24 35,971 2026-11-09 17:31:09
199.233.84.0/24 35,952 2026-11-09 17:31:09
199.233.142.0/24 35,917 2026-11-09 17:31:09
204.128.242.0/24 35,813 2026-11-09 17:31:09
204.128.238.0/24 35,682 2026-11-09 17:31:09
204.128.237.0/24 35,678 2026-11-09 17:31:09
204.128.240.0/24 35,587 2026-11-09 17:31:09
204.128.233.0/24 35,533 2026-11-09 17:31:09
204.128.234.0/24 35,516 2026-11-09 17:31:09
204.128.235.0/24 35,480 2026-11-09 17:31:09
204.128.236.0/24 35,438 2026-11-09 17:31:09
144.89.0.0/18 32,510 2026-11-09 17:31:09
143.109.64.0/19 31,669 2026-11-09 17:31:09
143.109.192.0/19 31,576 2026-11-09 17:31:09
204.145.232.0/24 30,699 2026-11-09 17:31:09
216.56.252.0/23 29,025 2026-11-09 17:31:09
199.197.64.0/18 28,961 2026-11-09 17:31:09
199.233.44.0/24 28,194 2026-11-09 16:19:23
192.206.48.0/24 26,012 2026-11-09 17:31:09
64.189.15.0/24 25,740 2026-11-09 17:31:09
148.59.44.0/24 25,712 2026-11-09 17:31:09
199.233.45.0/24 24,922 2026-11-09 16:19:23
165.128.0.0/16 23,648 2026-11-09 17:31:09
208.85.28.0/22 23,182 2026-11-09 17:31:09
140.104.0.0/16 22,030 2026-10-27 18:57:00
205.213.0.0/16 21,672 2026-11-09 17:31:09
198.150.0.0/16 21,613 2026-11-09 17:31:09
160.32.0.0/22 21,505 2026-11-09 17:31:09
216.56.0.0/16 21,499 2026-11-09 17:31:09
170.125.238.0/23 21,462 2026-11-09 17:31:09
140.189.0.0/16 21,422 2026-11-09 17:31:09
192.156.230.0/24 21,177 2026-11-09 17:31:09
170.125.0.0/16 20,941 2026-11-09 17:31:09
199.248.186.0/24 20,792 2026-11-09 17:31:09
199.242.176.0/24 20,648 2026-11-09 17:31:09
199.233.44.0/23 15,348 2026-11-09 16:19:23

Frequently Asked Questions

What is AS2381?

AS2381 is an Autonomous System Number assigned to WiscNet. 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 AS2381 announce?

AS2381 announces 441.3K IPv4 addresses distributed across 96 routed CIDR prefixes. The network is registered in United States.

Who operates AS2381?

AS2381 is operated by WiscNet. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS2381 registered in?

AS2381 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-11-09 17:39:05 UTC
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