Autonomous System

AS600

OARnet

OARnet United States 🌐 osc.edu

Announced IPs

912,640

CIDR prefixes

220

ASN

AS600

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.

57/100

Caution

How this score is built

Baseline (neutral) 65
Active-threat / abuse risk −12
Enterprise allocation +4
Trust score 57 / 100

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 11 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS600 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

Prefix	Origin ASNs	Last detected (UTC)
192.148.241.0/24	AS600, AS3112	2026-09-10 22:40:48
208.108.128.0/21	AS600, AS3112	2026-09-10 22:40:48
208.108.11.0/24	AS600, AS3112	2026-09-10 22:40:48
64.254.64.0/20	AS600, AS3112	2026-09-10 22:40:48
208.108.184.0/21	AS600, AS3112	2026-09-10 22:40:48
208.108.244.0/22	AS600, AS3112	2026-09-10 22:40:48
208.108.5.0/24	AS600, AS3112	2026-09-10 22:40:48
208.108.168.0/21	AS600, AS3112	2026-09-10 16:25:46
208.108.71.0/24	AS600, AS3112	2026-09-10 15:55:47
140.141.0.0/17	AS600, AS3112	2026-09-10 14:40:46
208.108.176.0/21	AS600, AS3112	2026-09-09 00:10:28

Network profile

Source: PeeringDB →

Network type Educational/Research

Traffic level 100-200Gbps

Geographic scope Regional

Traffic ratio Mostly Inbound

Peering policy Restrictive

IRR record RADB::AS600:AS-CONE

Present at 2 internet exchanges: Equinix Chicago, Equinix Ashburn

Website ↗

AS600 — global IP footprint

Cities where AS600 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

CIDR	IPs	PTR Density	Organization	Country	State	City
140.220.0.0/16	65.5K	0.0%	OARnet	US	—	—
144.50.0.0/16	65.5K	0.1%	OARnet	US	Ohio	Wilberforce
157.134.0.0/16	65.5K	0.0%	OARnet	US	—	—
163.11.0.0/16	65.5K	0.1%	OARnet	US	Ohio	Cedarville
206.244.0.0/16	65.5K	0.0%	OARnet	US	Ohio	Steubenville
131.187.0.0/17	32.8K	9.7%	OARnet	US	Ohio	Columbus
140.141.0.0/17	32.8K	13.2%	OARnet	US	Ohio	Granville
143.246.0.0/17	32.8K	7.1%	OARnet	US	Ohio	New Concord
157.134.0.0/17	32.8K	0.0%	OARnet	US	—	—
199.18.128.0/17	32.8K	0.0%	OARnet	US	Ohio	Dover
199.218.0.0/17	32.8K	13.7%	OARnet	US	Ohio	Columbus
130.108.0.0/18	16.4K	5.7%	OARnet	US	Ohio	Celina
130.108.128.0/18	16.4K	4.4%	OARnet	US	Ohio	Dayton
136.227.0.0/18	16.4K	82.6%	OARnet	US	Ohio	Springfield
143.246.64.0/18	16.4K	0.0%	OARnet	US	—	—
146.85.0.0/18	16.4K	0.4%	OARnet	US	—	—
157.134.128.0/18	16.4K	0.2%	OARnet	US	—	—
199.18.0.0/18	16.4K	0.0%	OARnet	US	Ohio	Mansfield
199.218.128.0/18	16.4K	0.0%	OARnet	US	Ohio	Columbus
205.133.0.0/18	16.4K	1.4%	OARnet	US	Ohio	Gambier
205.133.192.0/18	16.4K	0.0%	OARnet	US	Ohio	Marietta
206.21.192.0/18	16.4K	0.5%	OARnet	US	Ohio	Mount Vernon
206.244.0.0/18	16.4K	2.3%	OARnet	US	Ohio	North Canton
206.244.192.0/18	16.4K	18.7%	OARnet	US	—	—
208.108.0.0/18	16.4K	0.7%	OARnet	US	Kentucky	Fort Mitchell
130.108.192.0/19	8.2K	0.7%	OARnet	US	Ohio	Fairborn
131.187.160.0/19	8.2K	1.0%	OARnet	US	Ohio	Delaware
131.187.192.0/19	8.2K	0.3%	OARnet	US	—	—
143.246.0.0/19	8.2K	0.0%	OARnet	US	Ohio	New Concord
146.85.160.0/19	8.2K	0.1%	OARnet	US	—	—
146.85.224.0/19	8.2K	0.0%	OARnet	US	Ohio	Portsmouth
157.134.192.0/19	8.2K	0.1%	OARnet	US	—	—
198.30.0.0/19	8.2K	7.9%	OARnet	US	Ohio	Sylvania
198.30.96.0/19	8.2K	6.8%	OARnet	US	Ohio	Columbus
199.18.96.0/19	8.2K	5.8%	OARnet	US	Ohio	Westerville
199.18.160.0/19	8.2K	7.1%	OARnet	US	Ohio	Mansfield
199.218.192.0/19	8.2K	0.8%	OARnet	US	Ohio	Delaware
205.133.96.0/19	8.2K	1.3%	OARnet	US	Ohio	Columbus
205.133.224.0/19	8.2K	1.2%	OARnet	US	Ohio	Marietta
206.21.32.0/19	8.2K	0.0%	OARnet	US	Ohio	Logan
206.21.64.0/19	8.2K	0.2%	OARnet	US	Ohio	Columbus
206.21.128.0/19	8.2K	0.0%	OARnet	US	Ohio	Delaware
206.244.64.0/19	8.2K	0.9%	OARnet	US	Ohio	Steubenville
64.254.64.0/20	4.1K	1.0%	OARnet	US	Ohio	Niles
130.108.80.0/20	4.1K	0.0%	OARnet	US	—	—
130.108.224.0/20	4.1K	0.1%	OARnet	US	Ohio	Fairborn
131.187.144.0/20	4.1K	0.0%	OARnet	US	Ohio	Delaware
140.228.0.0/20	4.1K	98.4%	OARnet	US	Ohio	Ada
143.246.32.0/20	4.1K	0.0%	OARnet	US	—	—
157.134.224.0/20	4.1K	0.0%	OARnet	US	—	—
192.232.16.0/20	4.1K	13.0%	OARnet	US	Ohio	Elyria
198.30.16.0/20	4.1K	5.4%	OARnet	US	Ohio	Akron
198.30.32.0/20	4.1K	11.6%	OARnet	US	Ohio	Dayton
198.30.64.0/20	4.1K	35.7%	OARnet	US	Ohio	Columbus
198.30.144.0/20	4.1K	6.4%	OARnet	US	—	—
198.30.208.0/20	4.1K	15.2%	OARnet	US	Ohio	Columbus
198.30.240.0/20	4.1K	0.7%	OARnet	US	Ohio	Columbus
199.18.16.0/20	4.1K	1.2%	OARnet	US	—	—
199.18.144.0/20	4.1K	10.3%	OARnet	US	Ohio	Rootstown
199.218.224.0/20	4.1K	16.4%	OARnet	US	Ohio	Pickerington
205.133.80.0/20	4.1K	0.8%	OARnet	US	—	—
205.133.128.0/20	4.1K	0.1%	OARnet	US	Ohio	Marietta
205.133.192.0/20	4.1K	0.0%	OARnet	US	Ohio	Columbus
206.21.16.0/20	4.1K	30.4%	OARnet	US	Ohio	Galion
206.21.112.0/20	4.1K	0.1%	OARnet	US	Ohio	Delaware
206.21.176.0/20	4.1K	0.4%	OARnet	US	—	—
206.244.96.0/20	4.1K	0.2%	OARnet	US	Ohio	Steubenville
206.244.144.0/20	4.1K	0.1%	OARnet	US	Ohio	Berea
206.244.176.0/20	4.1K	0.7%	OARnet	US	—	—
208.108.64.0/20	4.1K	0.0%	OARnet	US	—	—
208.108.176.0/20	4.1K	0.0%	OARnet	US	Ohio	Akron
208.108.240.0/20	4.1K	2.9%	OARnet	US	—	—
130.108.64.0/21	2.0K	1.7%	OARnet	US	—	—
130.108.96.0/21	2.0K	7.5%	OARnet	US	—	—
130.108.112.0/21	2.0K	0.9%	OARnet	US	—	—
130.108.240.0/21	2.0K	0.0%	OARnet	US	—	—
131.187.136.0/21	2.0K	33.5%	OARnet	US	—	—
131.187.232.0/21	2.0K	0.0%	OARnet	US	Ohio	Xenia
131.187.240.0/21	2.0K	0.0%	OARnet	US	—	—
136.227.128.0/21	2.0K	86.6%	OARnet	US	—	—
143.246.32.0/21	2.0K	0.0%	OARnet	US	—	—
157.134.248.0/21	2.0K	0.0%	OARnet	US	—	—
198.30.0.0/21	2.0K	10.8%	OARnet	US	—	—
198.30.48.0/21	2.0K	3.5%	OARnet	US	Ohio	Kenton
198.30.88.0/21	2.0K	0.0%	OARnet	US	—	—
198.30.136.0/21	2.0K	1.3%	OARnet	US	—	—
198.30.144.0/21	2.0K	0.2%	OARnet	US	—	—
198.30.168.0/21	2.0K	0.2%	OARnet	US	—	—
198.30.184.0/21	2.0K	0.0%	OARnet	US	—	—
198.30.192.0/21	2.0K	0.0%	OARnet	US	—	—
198.30.232.0/21	2.0K	0.0%	OARnet	US	Ohio	Westerville
199.18.0.0/21	2.0K	2.1%	OARnet	US	—	—
199.18.72.0/21	2.0K	6.2%	OARnet	US	Ohio	South Vienna
199.18.128.0/21	2.0K	3.4%	OARnet	US	—	—
199.18.192.0/21	2.0K	2.1%	OARnet	US	Ohio	Irwin
199.18.216.0/21	2.0K	5.2%	OARnet	US	—	—
199.18.224.0/21	2.0K	3.5%	OARnet	US	—	—
199.18.248.0/21	2.0K	0.2%	OARnet	US	—	—
199.218.240.0/21	2.0K	8.4%	OARnet	US	—	—
204.57.8.0/21	2.0K	1.0%	OARnet	US	Ohio	Cincinnati

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS600 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
199.218.126.0/23	402,179	2026-09-10 22:23:11
199.218.112.0/24	401,821	2026-09-10 22:23:11
199.218.111.0/24	401,722	2026-09-10 22:23:11
199.120.181.0/24	63,691	2026-09-10 22:23:11
64.254.64.0/20	43,892	2026-09-10 22:23:11
208.108.44.0/24	23,158	2026-09-10 22:23:11
208.108.176.0/21	22,301	2026-09-10 22:23:11
192.88.193.0/24	20,347	2026-09-10 22:22:45
192.131.123.0/24	16,164	2026-09-10 22:23:11
140.228.0.0/20	15,727	2026-09-10 22:23:11
208.108.50.0/24	15,240	2026-09-10 22:23:11
163.11.0.0/16	14,377	2026-09-10 22:23:11
192.88.195.0/24	14,090	2026-09-10 22:23:11
140.141.0.0/17	13,478	2026-09-10 22:23:11
206.21.106.0/24	13,406	2026-09-10 22:23:11
208.108.54.0/24	12,703	2026-09-10 22:23:11
208.108.244.0/22	12,510	2026-09-10 22:22:38
208.108.79.0/24	12,456	2026-09-10 22:22:38
208.108.71.0/24	12,443	2026-09-10 22:22:38
208.108.5.0/24	12,431	2026-09-10 22:22:38
208.108.52.0/24	12,102	2026-09-10 22:23:11
208.108.11.0/24	11,980	2026-09-10 22:23:11
146.85.32.0/19	11,970	2026-09-10 22:23:11
208.108.70.0/24	11,955	2026-09-10 22:23:11
146.85.0.0/19	11,945	2026-09-10 22:23:11
146.85.224.0/19	11,935	2026-09-10 22:23:11
204.128.217.0/24	11,933	2026-09-10 22:23:11
192.148.248.0/22	11,905	2026-09-10 22:22:45
146.85.160.0/19	11,900	2026-09-10 22:23:11
192.153.32.0/24	11,893	2026-09-10 22:23:11
192.148.240.0/21	11,829	2026-09-10 22:22:45
192.150.115.0/24	11,825	2026-09-10 22:23:11
192.148.235.0/24	11,797	2026-09-10 22:22:45
131.238.28.0/24	11,796	2026-09-10 22:23:11
192.148.236.0/22	11,788	2026-09-10 22:22:45
192.153.26.0/23	11,774	2026-09-10 22:22:45
131.187.0.0/16	11,747	2026-09-10 22:22:45
157.134.0.0/16	11,695	2026-09-10 22:22:45
192.232.19.0/24	11,684	2026-09-10 22:22:53
192.148.237.0/24	11,665	2026-09-10 22:22:53
205.133.85.0/24	11,649	2026-09-10 22:11:44
208.108.128.0/21	11,576	2026-09-10 22:23:11
144.50.0.0/16	11,574	2026-09-10 22:23:11
208.108.48.0/24	11,550	2026-09-10 22:23:11
192.148.251.0/24	11,457	2026-09-10 22:23:11
208.108.184.0/21	11,431	2026-09-10 22:23:11
199.218.0.0/16	11,385	2026-09-10 22:22:45
192.153.40.0/23	11,358	2026-09-10 22:22:45
136.227.128.0/21	11,341	2026-09-10 22:23:11
192.88.192.0/22	11,337	2026-09-10 22:22:45

Showing top 50 of 83 announced prefixes by sample volume.

Frequently Asked Questions

What is AS600?

AS600 is an Autonomous System Number assigned to OARnet. 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 AS600 announce?

AS600 announces 912.6K IPv4 addresses distributed across 220 routed CIDR prefixes. The network is registered in United States.

Who operates AS600?

AS600 is operated by OARnet. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS600 registered in?

AS600 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: 2026-09-10 22:39:05 UTC