Autonomous System
AS11537 · Internet2
Overview
RIPE RIS route collectors currently see no prefix originated by AS11537: as far as they can tell, the number is not announced on the Internet right now. In the paths the collectors record, it has 10 upstream neighbours (transit providers or peers) and 126 downstream neighbours (customers or networks it carries). Its most visible upstreams are GEANT Vereniging (AS20965), Asia Pacific Advanced Network - Japan (AS7660), and SURF B.V. (AS1103). AS11537 was assigned by ARIN, and its registration country is United States.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:52 AM UTC. This page is refreshed at most every 12 hours.
Go further
No IPv4 address of this network is known right now, so there is nothing to trace to.
Announced prefixes
IPv4 prefixes (none)
None currently seen.
IPv6 prefixes (none)
None currently seen.
Neighbours
Upstreams (transit or peers) (10)
| AS | Network | Visibility |
|---|---|---|
| AS20965 | GEANT Vereniging | 3,857 |
| AS7660 | Asia Pacific Advanced Network - Japan | 2,353 |
| AS1103 | SURF B.V. | 2,033 |
| AS24490 | Trans-Eurasia Information Network (TEIN2) - SG | 1,850 |
| AS7575 | Australian Academic and Research Network (AARNet) | 826 |
| AS2907 | Research Organization of Information and Systems, National Institute of Informatics | 263 |
| AS36944 | Ubuntunet Alliance For Research and Education Networking | 13 |
| AS293 | ESnet | 5 |
| AS2603 | NORDUnet | 1 |
| AS23864 | Singapre Advance Research and Education Network - National Grid Office - IHPC | 1 |
Downstreams (customers) (126)
| AS | Network | Visibility |
|---|---|---|
| AS2153 | CENIC | 980 |
| AS3754 | NYSERNet | 619 |
| AS20965 | GEANT Vereniging | 506 |
| AS10490 | Georgia Institute of Technology | 402 |
| AS16905 | LEARN | 388 |
| AS6509 | CANARIE Inc | 362 |
| AS3112 | OARnet | 316 |
| AS1916 | Rede Nacional de Ensino e Pesquisa | 277 |
| AS10886 | University of Maryland | 270 |
| AS14041 | University Corporation for Atmospheric Research | 268 |
| AS9885 | NKN INTERNET GATEWAY NETWORK | 262 |
| AS101 | - | 252 |
| AS11096 | FloridaNet | 236 |
| AS3701 | University of Oregon | 222 |
| AS20080 | Florida International University | 219 |
| AS40581 | - | 219 |
| AS38022 | REANNZ National Research and Education Network | 218 |
| AS81 | MCNC | 214 |
| AS22335 | - | 211 |
| AS399855 | - | 209 |
| AS237 | Merit Network Inc. | 202 |
| AS32440 | - | 184 |
| AS19782 | - | 183 |
| AS57 | University of Minnesota | 175 |
| AS22742 | - | 174 |
| AS2381 | - | 168 |
| AS2603 | NORDUnet | 150 |
| AS14325 | - | 138 |
| AS5078 | Oklahoma Network for Education Enrichment and | 121 |
| AS2495 | Kansas Research and Education Network | 119 |
The 30 most visible of 126.
1 more neighbour appears on both sides of this network depending on the path, so they are counted in neither list.
Visibility is RIPEstat's count of how often the route collectors observed the link. It compares neighbours with each other; it is not a traffic volume.
How to read this page
An Autonomous System (AS) is a network run under one routing policy: an internet provider, a cloud, a content network, a university. Each one has a number, its ASN, assigned by a regional registry (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), and uses BGP, the protocol networks use to tell each other where addresses are, to announce the blocks of addresses it delivers to.
A prefix such as 203.0.113.0/24 is a block of addresses: the number after the slash says how many bits are fixed, so a /24 holds 256 IPv4 addresses and a /16 holds 65,536. Networks often announce a large block and smaller pieces of it at the same time, which is why the address total counts each address once.
Neighbours come from the paths themselves. A network that appears just before this one in a path, on the collector's side, is an upstream: a transit provider or a peer. One that appears just after it is a downstream, usually a customer. Peering at an internet exchange also shows up as an upstream, so the upstream list is not a list of paid transit.
The data comes from RIPEstat, run by the RIPE NCC, which gathers the routing tables of hundreds of networks through its RIS route collectors. This page reads it when it is visited and keeps it for 12 hours at most; the BGP viewer reads it live.