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
- Active-threat / abuse risk −12
- Trust score 53 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
About Internet2
Internet2 is a not-for-profit United States computer networking consortium led by members from the research and education communities, industry, and government. The Internet2 consortium administrative headquarters are located in Ann Arbor, Michigan, with offices in Washington, D.C., and Denver, Colorado.
⚠ 7 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS11537 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) |
|---|---|---|
| 163.253.80.0/24 | AS11164, AS11537 | 2026-10-19 17:44:48 |
| 163.253.23.0/24 | AS11537, AS396955 | 2026-10-19 17:44:48 |
| 163.253.81.0/24 | AS11164, AS11537 | 2026-10-19 17:44:48 |
| 64.57.22.0/24 | AS11537, AS396955 | 2026-10-19 17:44:48 |
| 163.253.16.0/24 | AS11537, AS396955 | 2026-10-19 17:44:48 |
| 163.253.17.0/24 | AS11537, AS396955 | 2026-10-19 17:44:48 |
| 163.253.64.0/24 | AS11537, AS396955 | 2026-10-19 17:44:48 |
Network profile
Source: PeeringDB →Present at 2 internet exchanges: SIX Seattle: MTU 1500, SIX Seattle (Jumbo): MTU 9000
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 64.57.16.0/22 | 1.0K |
2.7%
|
Internet2 | US | — | — |
| 64.57.24.0/22 | 1.0K |
3.8%
|
Internet2 | US | — | — |
| 163.253.0.0/22 | 1.0K |
59.1%
|
Internet2 | US | — | — |
| 163.253.12.0/22 | 1.0K |
37.5%
|
Internet2 | US | — | — |
| 64.57.22.0/23 | 512 |
14.8%
|
Internet2 | US | — | — |
| 64.57.30.0/23 | 512 |
2.9%
|
Internet2 | US | — | — |
| 163.253.16.0/23 | 512 |
43.8%
|
Internet2 | US | — | — |
| 163.253.56.0/23 | 512 |
11.9%
|
Internet2 | US | — | — |
| 163.253.80.0/23 | 512 |
0.0%
|
Internet2 | US | — | — |
| 64.57.23.0/24 | 256 |
5.5%
|
Internet2 | US | — | — |
| 64.57.28.0/24 | 256 |
14.8%
|
Internet2 | US | — | — |
| 162.252.70.0/24 | 256 |
2.3%
|
Internet2 | US | — | — |
| 163.253.9.0/24 | 256 |
90.2%
|
Internet2 | US | — | — |
| 163.253.19.0/24 | 256 |
0.0%
|
Internet2 | US | — | — |
| 163.253.23.0/24 | 256 |
32.8%
|
Internet2 | US | — | — |
| 163.253.28.0/24 | 256 |
10.2%
|
Internet2 | US | — | — |
| 163.253.63.0/24 | 256 |
0.0%
|
Internet2 | US | — | — |
| 163.253.64.0/24 | 256 |
0.0%
|
Internet2 | US | — | — |
| 163.253.66.0/24 | 256 |
0.0%
|
Internet2 | US | — | — |
| 163.253.83.0/24 | 256 |
0.0%
|
Internet2 | US | — | — |
| 198.71.45.0/24 | 256 |
12.9%
|
Internet2 | US | — | — |
| 198.71.46.0/24 | 256 |
13.3%
|
Internet2 | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS11537 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 |
|---|---|---|
| 163.253.14.0/23 | 235 | 2026-10-18 17:52:09 |
| 163.253.12.0/23 | 234 | 2026-10-18 17:52:09 |
| 163.253.57.0/24 | 229 | 2026-10-18 17:52:09 |
| 163.253.28.0/24 | 229 | 2026-10-18 17:52:17 |
| 163.253.9.0/24 | 228 | 2026-10-18 17:52:09 |
| 163.253.56.0/24 | 223 | 2026-10-18 17:52:09 |
| 198.71.46.0/24 | 206 | 2026-10-18 17:52:09 |
| 64.57.16.0/20 | 202 | 2026-10-18 17:52:09 |
| 198.71.45.0/24 | 200 | 2026-10-18 17:52:09 |
| 162.252.70.0/24 | 200 | 2026-10-18 17:52:09 |
| 163.253.66.0/23 | 199 | 2026-10-18 17:52:09 |
| 163.253.0.0/22 | 195 | 2026-10-18 17:52:09 |
| 163.253.3.0/24 | 193 | 2026-10-18 17:52:09 |
| 64.57.22.0/24 | 189 | 2026-10-18 17:52:09 |
| 163.253.0.0/24 | 185 | 2026-10-18 17:52:09 |
| 163.253.64.0/24 | 184 | 2026-10-18 17:52:09 |
| 163.253.16.0/24 | 179 | 2026-10-18 17:52:17 |
| 163.253.17.0/24 | 179 | 2026-10-18 17:52:17 |
| 163.253.23.0/24 | 179 | 2026-10-18 17:52:17 |
| 163.253.63.0/24 | 95 | 2026-10-16 16:11:57 |
| 163.253.83.0/24 | 81 | 2026-10-18 17:52:21 |
| 163.253.81.0/24 | 74 | 2026-10-18 17:52:21 |
| 163.253.80.0/24 | 48 | 2026-10-18 17:52:21 |
| 64.57.23.240/28 | 14 | 2026-10-19 06:47:14 |
| 163.253.19.0/24 | 5 | 2026-08-16 19:20:58 |
Frequently Asked Questions
What is AS11537?
AS11537 is an Autonomous System Number assigned to Internet2. 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 AS11537 announce?
AS11537 announces 9.7K IPv4 addresses distributed across 21 routed CIDR prefixes. The network is registered in United States.
Who operates AS11537?
AS11537 is operated by Internet2. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS11537 registered in?
AS11537 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
