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Autonomous System

AS33588 ยท Charter Communications LLC

Overview

AS33588 is announced on the Internet: RIPE RIS route collectors currently see 39 IPv4 prefixes and 13 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 841,984 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 2 upstream neighbours (transit providers or peers) and 12 downstream neighbours (customers or networks it carries). Its most visible upstreams are Charter Communications LLC (AS20115) and Charter Communications Inc (AS7843). AS33588 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:53 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 69.144.0.1, the first address of 69.144.0.0/15. 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 (39 prefixes)

PrefixAddresses
35.131.32.0/198,192
35.132.0.0/24256
35.132.32.0/24256
35.132.48.0/204,096
35.133.0.0/1816,384
35.134.192.0/1816,384
35.150.64.0/1816,384
35.151.208.0/204,096
47.5.0.0/1732,768
47.28.192.0/1816,384
47.37.0.0/1816,384
47.44.112.0/204,096
47.45.128.0/1732,768
47.47.128.0/1816,384
47.231.228.0/221,024
69.144.0.0/15131,072
69.146.0.0/1665,536
71.15.192.0/198,192
71.85.191.0/24256
72.174.0.0/15131,072
75.143.192.0/198,192
76.58.56.0/23512
98.127.0.0/1665,536
137.26.64.0/1816,384
150.181.24.0/23512
150.181.26.0/24256
150.181.91.0/24256
150.224.249.0/24256
159.111.0.0/212,048
159.111.8.0/221,024
159.111.12.0/221,024
159.111.16.0/204,096
172.221.64.0/1816,384
173.40.192.0/204,096
174.45.0.0/1665,536
184.166.0.0/15131,072
192.61.208.0/212,048
192.61.246.0/23512
192.61.255.0/24256

IPv6 prefixes (13 prefixes)

Prefix
2600:6c00:2::/47
2600:6c34::/30
2600:6c66::/32
2600:6c67::/32
2600:6c7f:9430::/44
2600:6cf2::/32
2600:6cf3::/32
2602:104:f::/48
2602:107:4a00::/40
2602:107:4a20::/44
2602:107:e7a0::/43
2602:10d:8000::/36
2602:10f::/32

Neighbours

Upstreams (transit or peers) (2)

ASNetworkVisibility
AS20115Charter Communications LLC3,590
AS7843Charter Communications Inc273

Downstreams (customers) (12)

ASNetworkVisibility
AS395251Benefis Health System441
AS402935City346
AS19115Charter Communications LLC336
AS25816Touro College274
AS401920Montana Outback Wireless Inc.271
AS62817BARRETT HOSPITAL AND HEALHCARE260
AS394913AirGrids258
AS26450CTDI250
AS393367Teton County Hospital District229
AS13590Marcus Daly Memorial Hospital Corporation143
AS393657-136
AS32146-79

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.