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Autonomous System

AS5091 ยท Stripe, Inc.

Overview

AS5091 is announced on the Internet: RIPE RIS route collectors currently see 19 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 4,864 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 28 upstream neighbours (transit providers or peers) and no downstream neighbour (customers or networks it carries). Its most visible upstreams are Zayo Bandwidth (AS6461), Vocus Connect International Backbone (AS4826), and Alestra, S. de R.L. de C.V. (AS11172). AS5091 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:50 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 65.87.144.1, the first address of 65.87.144.0/24. An address picked inside a prefix may not answer (nothing listens there, or the network filters probes): the trace then shows the path up to the last network that replies.

Announced prefixes

IPv4 prefixes (19 prefixes)

PrefixAddresses
65.87.144.0/24256
139.45.160.0/24256
139.45.161.0/24256
139.45.162.0/24256
139.45.165.0/24256
139.45.168.0/24256
139.45.170.0/24256
139.45.171.0/24256
139.45.173.0/24256
139.45.175.0/24256
139.45.177.0/24256
139.45.178.0/24256
139.45.180.0/24256
139.45.181.0/24256
139.45.182.0/24256
139.45.183.0/24256
139.45.184.0/24256
194.34.152.0/24256
194.34.153.0/24256

IPv6 prefixes (1 prefix)

Prefix
2a0c:ecc0::/48

Neighbours

Upstreams (transit or peers) (28)

ASNetworkVisibility
AS6461Zayo Bandwidth466
AS4826Vocus Connect International Backbone259
AS11172Alestra, S. de R.L. de C.V.245
AS4657StarHub Ltd236
AS8218Zayo Infrastructure France SA231
AS2856British Telecommunications Limited222
AS9244# AS-DYXNET-TW-AP converted to ASN-DYXNET-TW-AP for RPSL compliance - Diyixian.com (TW) Limited211
AS7018AT&T Enterprises, LLC155
AS12271Charter Communications Inc141
AS8220COLT Technology Services Group Limited131
AS46887Crown Castle Fiber LLC130
AS6939Hurricane Electric LLC125
AS3356Level 3 Parent, LLC122
AS5606-100
AS5400British Telecommunications Limited98
AS3257GTT Communications Inc.87
AS9583Sify Limited85
AS33667Comcast Cable Communications, LLC58
AS33651Comcast Cable Communications, LLC44
AS200780-42
AS852TELUS Communications Inc.36
AS207044Enet Telecommunications Networks Limited10
AS4637Telstra Global9
AS35280F5 Networks SARL6
AS49127Asimo Networks B.V.3
AS24482SG.GS2
AS286GTT Communications Inc.1
AS137409GSL Networks Pty LTD1

Downstreams (customers) (0)

None seen.

6 more neighbours appear 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.

Frequently asked questions

How do I find the ASN of an IP address?
Type the address in the BGP viewer: it shows the prefix that covers it, the AS that originates that prefix and the paths seen towards it. A traceroute also names the network of each hop, so you can see every AS a connection crosses.
Why does one company have several ASNs?
Large operators split their network by region, by activity or by history: a cloud may use one number for its backbone and another for a region, and every acquisition brings its own numbers. Each number has its own page, with its own prefixes and neighbours.
Why do prefix counts differ from one site to another?
Each source sees the routing table from different collectors, at a different time, and counts differently: some include prefixes withdrawn in recent weeks, some merge a block and its pieces. This page counts the prefixes RIPE RIS collectors see originated by the network at the end of the latest two-week window, and counts each IPv4 address once.
Is this the list of IP ranges of a cloud provider?
It is what its networks announce, which is what the Internet routes to them. Many providers also publish an official list of ranges per service and region; that list is the reference for firewall rules, because a range can be announced before it is used, or announced by another of their AS numbers.