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Autonomous System

AS53813 · ZSCALER, INC.

Overview

AS53813 is announced on the Internet: RIPE RIS route collectors currently see 370 IPv4 prefixes and 32 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 141,312 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 33 upstream neighbours (transit providers or peers) and no downstream neighbour (customers or networks it carries). Its most visible upstreams are BHARTI Airtel Ltd. (AS9498), Vocus Connect International Backbone (AS4826), and Telstra Global (AS4637). AS53813 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:53 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 101.2.202.1, the first address of 101.2.202.0/23. 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 (370 prefixes)

PrefixAddresses
64.62.169.0/24256
101.2.192.0/24256
101.2.193.0/24256
101.2.194.0/24256
101.2.195.0/24256
101.2.196.0/24256
101.2.197.0/24256
101.2.198.0/24256
101.2.199.0/24256
101.2.200.0/24256
101.2.201.0/24256
101.2.202.0/23512
101.2.204.0/23512
101.2.206.0/24256
101.2.207.0/24256
101.2.208.0/24256
101.2.209.0/24256
101.2.214.0/24256
101.2.215.0/24256
101.2.216.0/23512
101.2.216.0/24256
101.2.218.0/23512
101.2.220.0/23512
101.2.222.0/23512
101.2.224.0/23512
101.2.226.0/23512
101.2.228.0/23512
101.2.230.0/23512
101.2.232.0/23512
101.2.234.0/23512
101.2.236.0/23512
101.2.238.0/23512
101.2.240.0/24256
101.2.241.0/24256
101.2.242.0/23512
101.2.244.0/23512
101.2.246.0/24256
101.2.247.0/24256
101.2.248.0/23512
101.2.250.0/24256
101.2.252.0/23512
101.2.254.0/23512
120.29.239.0/24256
129.127.226.0/24256
129.127.227.0/24256
136.226.89.0/24256
136.226.222.0/23512
136.226.224.0/23512
136.226.228.0/23512
136.226.230.0/23512
136.226.232.0/23512
136.226.234.0/23512
136.226.236.0/23512
136.226.238.0/23512
136.226.240.0/23512
136.226.242.0/23512
136.226.244.0/23512
136.226.250.0/23512
136.226.252.0/23512
136.226.254.0/23512
137.31.17.0/24256
137.31.18.0/24256
137.31.19.0/24256
137.31.44.0/24256
137.31.50.0/24256
137.31.63.0/24256
137.31.92.0/23512
137.31.118.0/24256
137.31.132.0/24256
137.31.136.0/23512
137.31.138.0/23512
137.31.152.0/23512
137.31.156.0/24256
137.31.164.0/24256
137.31.172.0/24256
137.31.173.0/24256
137.31.174.0/24256
137.31.175.0/24256
137.31.209.0/24256
137.83.137.0/24256
137.83.144.0/24256
137.83.145.0/24256
137.83.147.0/24256
137.83.149.0/24256
137.83.150.0/24256
137.83.151.0/24256
137.83.152.0/24256
137.83.160.0/24256
137.83.178.0/24256
137.83.184.0/24256
137.83.185.0/24256
137.83.188.0/24256
137.83.189.0/24256
147.161.192.0/23512
147.161.194.0/23512
147.161.196.0/23512
147.161.198.0/23512
147.161.200.0/23512
147.161.204.0/23512
147.161.208.0/23512

Showing the first 100 of 370, in address order. Complete list on RIPEstat

IPv6 prefixes (32 prefixes)

Prefix
2400:7aa0:1200::/40
2400:7aa0:1300::/40
2400:7aa0:1400::/40
2400:7aa0:1500::/40
2400:7aa0:1600::/40
2400:7aa0:1700::/40
2400:7aa0:1800::/40
2400:7aa0:1900::/40
2400:7aa0:1a00::/40
2400:7aa0:1b00::/40
2400:7aa0:1c00::/40
2400:7aa0:1d00::/40
2400:7aa0:1e00::/40
2400:7aa0:1f00::/40
2400:7aa0:2200::/40
2400:7aa0:2300::/40
2400:7aa0:2400::/40
2400:7aa0:2500::/40
2400:7aa0:2600::/40
2400:7aa0:2800::/40
2400:7aa0:2900::/40
2400:7aa0:2b00::/40
2400:7aa0:2c00::/40
2400:7aa0:2d00::/48
2400:7aa0:2e00::/40
2605:4300:5::/48
2a03:eec0:3211::/48
2a03:eec0:3216::/48
2a03:eec0:3221::/48
2a03:eec0:3222::/48
2a03:eec0:3223::/48
2a03:eec0:3224::/48

Neighbours

Upstreams (transit or peers) (33)

ASNetworkVisibility
AS9498BHARTI Airtel Ltd.1,072
AS4826Vocus Connect International Backbone517
AS4637Telstra Global494
AS7575Australian Academic and Research Network (AARNet)371
AS6939Hurricane Electric LLC325
AS55410Vodafone Idea Ltd306
AS55836Reliance Jio Infocomm Limited279
AS2914NTT America, Inc.210
AS17408AboveNet Communications Taiwan201
AS1299Arelion Sweden AB146
AS9318SK Broadband Co Ltd135
AS9583-126
AS4788TM TECHNOLOGY SERVICES SDN. BHD.99
AS3356Level 3 Parent, LLC81
AS3786-43
AS1221Telstra Limited32
AS45267Lightwire LTD23
AS8220COLT Technology Services Group Limited7
AS6453TATA COMMUNICATIONS (AMERICA) INC5
AS20485Joint Stock Company TransTeleCom5
AS4635-3
AS2516KDDI CORPORATION2
AS4755TATA Communications formerly VSNL is Leading ISP2
AS7473Singapore Telecommunications Ltd2
AS9002RETN Limited2
AS24115-2
AS38008Aperture Science Limited2
AS2518BIGLOBE Inc.1
AS9304HGC Global Communications Limited1
AS15802Emirates Integrated Telecommunications Company PJSC1

The 30 most visible of 33.

Downstreams (customers) (0)

None seen.

29 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.