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Autonomous System

AS7725 · Comcast Cable Communications, LLC

Overview

AS7725 is announced on the Internet: RIPE RIS route collectors currently see 32 IPv4 prefixes and 112 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 10,496 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 2 upstream neighbours (transit providers or peers) and 66 downstream neighbours (customers or networks it carries). Its most visible upstreams are Comcast Cable Communications, LLC (AS7922) and Level 3 Parent, LLC (AS3356). AS7725 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 10:54 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 72.162.44.1, the first address of 72.162.44.0/22. 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 (32 prefixes)

PrefixAddresses
24.104.42.0/24256
24.104.125.0/24256
50.200.84.0/24256
50.200.228.0/24256
50.201.173.0/24256
50.201.206.0/24256
50.201.221.0/24256
50.204.42.0/24256
50.204.249.0/24256
50.205.36.0/23512
50.205.240.0/24256
50.207.4.0/24256
50.220.99.0/24256
50.220.236.0/24256
50.224.48.0/23512
50.225.207.0/24256
50.232.28.0/24256
50.233.190.0/24256
50.234.27.0/24256
50.235.151.0/24256
50.238.8.0/24256
72.162.12.0/23512
72.162.36.0/24256
72.162.44.0/221,024
72.162.48.0/23512
72.162.100.0/23512
107.0.147.0/24256
139.181.24.0/24256
167.136.33.0/24256
167.183.251.0/24256
205.167.158.0/23512
209.23.246.0/24256

IPv6 prefixes (112 prefixes)

Prefix
2001:559:5a::/48
2001:559:64::/48
2001:559:79::/48
2001:559:90::/48
2001:559:f4::/48
2001:559:1ad::/48
2001:559:1c8::/48
2001:559:1cc::/48
2001:559:1fe::/48
2001:559:21f::/48
2001:559:255::/48
2001:559:267::/48
2001:559:28d::/48
2001:559:325::/48
2001:559:36b::/48
2001:559:382::/48
2001:559:383::/48
2001:559:38b::/48
2001:559:396::/48
2001:559:3cd::/48
2001:559:3db::/48
2001:559:406::/48
2001:559:422::/48
2001:559:448::/48
2001:559:46e::/48
2001:559:471::/48
2001:559:4e0::/48
2001:559:506::/48
2001:559:52d::/48
2001:559:579::/48
2001:559:59e::/48
2001:559:5d0::/48
2001:559:701::/48
2001:559:71a::/48
2001:559:75d::/48
2001:559:7d4::/48
2001:559:7fd::/48
2001:559:800d::/48
2001:559:80cc::/48
2001:559:8107::/48
2001:559:8138::/48
2001:559:8160::/48
2001:559:8176::/48
2001:559:81c4::/48
2001:559:81c5::/48
2001:559:8224::/48
2001:559:8271::/48
2001:559:8273::/48
2001:559:82b2::/48
2001:559:83c5::/48
2001:559:83d2::/48
2001:559:83d3::/48
2001:559:83f6::/48
2001:559:843c::/48
2001:559:8456::/48
2001:559:8457::/48
2001:559:849c::/48
2001:559:84b5::/48
2001:559:84d0::/48
2001:559:850c::/48
2001:559:850d::/48
2001:559:8523::/48
2001:559:8532::/48
2001:559:8548::/48
2001:559:854f::/48
2001:559:8590::/48
2001:559:85a8::/48
2001:559:85dd::/48
2001:559:85f6::/48
2001:559:860b::/48
2001:559:8655::/48
2001:559:865c::/48
2001:559:8668::/48
2001:559:86bf::/48
2001:559:86c0::/48
2001:559:86d5::/48
2001:559:86e6::/48
2001:559:86e7::/48
2001:559:86f3::/48
2001:559:8712::/48
2001:559:8713::/48
2001:559:8716::/48
2001:559:8767::/48
2001:559:87df::/48
2001:559:c01f::/48
2001:559:c02e::/48
2001:559:c0a3::/48
2001:559:c15a::/48
2001:559:c169::/48
2001:559:c1ae::/48
2001:559:c1bd::/48
2001:559:c1cf::/48
2001:559:c1f3::/48
2001:559:c1f4::/48
2001:559:c241::/48
2001:559:c253::/48
2001:559:c2ab::/48
2001:559:c2ba::/48
2001:559:c325::/48
2001:559:c33e::/48

Showing the first 100 of 112, in address order. Complete list on RIPEstat

Neighbours

Upstreams (transit or peers) (2)

ASNetworkVisibility
AS7922Comcast Cable Communications, LLC7,600
AS3356Level 3 Parent, LLC2,710

Downstreams (customers) (66)

ASNetworkVisibility
AS396019Comcast Cable Communications, LLC347
AS33741Dennis Group342
AS13433Cox Enterprises Inc302
AS393385National Vision, Inc.302
AS22304City of Marietta276
AS12211Operations & Compliance Network LLC267
AS54302University of North Alabama266
AS40724DeKalb County, Georgia263
AS14725Crawford & Company261
AS40057Georgia Aquarium, INC.255
AS394549-255
AS14934-254
AS22768-254
AS25633-254
AS26883-254
AS40072-254
AS401422-254
AS4503-253
AS19155-253
AS21784-253
AS21938-253
AS393567-253
AS14816-251
AS22531-251
AS55086-251
AS395420-251
AS54244-250
AS401971-248
AS14395-239
AS33304-235

The 30 most visible of 66.

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.