AS40581
Arkansas Research and Education Optical Network
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
- Academic allocation +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 4 internet exchanges: Equinix Dallas, DE-CIX Dallas: DE-CIX Dallas Peering LAN, MUS-IX: Main, KCIX
AS40581 — global IP footprint
Cities where AS40581 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS40581 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 |
|---|---|---|
| 147.97.8.0/24 | 25,097 | 2026-07-23 15:40:27 |
| 147.97.30.0/23 | 13,439 | 2026-07-23 16:07:11 |
| 147.97.16.0/21 | 9,363 | 2026-07-23 16:07:11 |
| 147.97.12.0/23 | 9,326 | 2026-07-23 16:07:11 |
| 147.97.14.0/23 | 9,273 | 2026-07-23 16:07:11 |
| 198.181.214.0/24 | 8,565 | 2026-07-23 15:40:27 |
| 159.150.4.0/22 | 8,144 | 2026-07-23 15:40:27 |
| 23.144.148.0/24 | 8,056 | 2026-07-23 15:40:27 |
| 198.181.240.0/24 | 7,744 | 2026-07-23 15:40:27 |
| 161.31.0.0/16 | 7,223 | 2026-07-23 16:07:11 |
| 208.90.104.0/21 | 6,801 | 2026-07-23 15:40:23 |
| 130.184.47.0/24 | 5,667 | 2026-07-23 15:40:27 |
| 130.184.31.0/24 | 4,406 | 2026-07-13 06:46:22 |
| 208.90.108.0/24 | 89 | 2026-07-23 09:35:44 |
| 208.90.110.0/24 | 89 | 2026-07-23 09:35:44 |
| 208.90.104.0/22 | 89 | 2026-07-23 09:35:44 |
Frequently Asked Questions
What is AS40581?
AS40581 is an Autonomous System Number assigned to Arkansas Research and Education Optical Network. 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 AS40581 announce?
AS40581 announces 73.7K IPv4 addresses distributed across 12 routed CIDR prefixes. The network is registered in United States.
Who operates AS40581?
AS40581 is operated by Arkansas Research and Education Optical Network. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS40581 registered in?
AS40581 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
