AS91

Name: AS91 — Rensselaer Polytechnic Institute
Creator: ipdex

Rensselaer Polytechnic Institute Unknown registered in United States

12IPv4 prefixes

2IPv6 prefixes

71%RPKI-valid

#12,742AS Rank

327/327RIS visibility

#2,445Rank in United States

1986-11-18Allocated

Rensselaer Polytechnic Institute (AS91) — Unknown, registered in United States. announces 12 IPv4 prefixes + 2 IPv6 prefixes. Rank in United States: #2445. Allocated: 1986-11-18.

IPv4 12IPv6 2

Announced prefixes · 14

v4 128.113.0.0/16 unknown
v4 128.213.0.0/16 unknown
v4 129.161.0.0/16 valid
v4 129.5.0.0/16 valid
v4 146.8.0.0/16 valid
v4 192.12.91.0/24 valid
v4 192.12.92.0/24 valid
v4 204.145.205.0/24 valid
v4 204.76.222.0/24 valid
v4 204.76.223.0/24 valid
v4 204.76.224.0/22 valid
v4 204.76.228.0/23 valid
v6 2620:0:2820::/48 unknown
v6 2620:0:bf0::/48 unknown

RPKI: rpki.cloudflare.com · 2026-06-17

Routing: 12 IPv4 · 2 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	14
2026-06-13	14

AS topology · Customer cone 1

Providers · 5

AS3356 Level 3 Parent, LLC
AS174 Cogent Communications, LLC
AS13536 FirstLight Networks, LLC
AS3754 NYSERNet
AS3630 NYSERNet

Embed this on your site

Free badges and live charts — they update as the index does. No key, link back to ipdex.

Badge

Markdown

[![AS91 on ipdex](https://ipdex.io/badge/asn/91.svg)](https://ipdex.io/asn/AS91/)

HTML

<a href="https://ipdex.io/asn/AS91/"><img src="https://ipdex.io/badge/asn/91.svg" alt="AS91 on ipdex"></a>

Live chart (iframe)

<iframe src="https://ipdex.io/embed/asn/91" width="680" height="260" frameborder="0" scrolling="no" title="ipdex chart" style="border:0;max-width:100%"></iframe>

oEmbed-enabled: paste the page URL into platforms that support oEmbed and the chart embeds automatically.