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Autonomous System

AS7922 · Comcast Cable Communications, LLC

Overview

AS7922 is announced on the Internet: RIPE RIS route collectors currently see 426 IPv4 prefixes and 5 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 68,238,848 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 31 upstream neighbours (transit providers or peers) and 114 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), Cogent Communications, LLC (AS174), and NTT America, Inc. (AS2914). AS7922 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 18, 2026 at 7:31 AM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 73.0.0.1

The trace goes to 73.0.0.1, the first address of 73.0.0.0/8. 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 (426 prefixes)

PrefixAddresses
23.24.0.0/15131,072
23.30.0.0/15131,072
23.68.0.0/14262,144
24.0.0.0/121,048,576
24.16.0.0/13524,288
24.30.0.0/1732,768
24.34.0.0/1665,536
24.40.0.0/1816,384
24.40.64.0/204,096
24.60.0.0/14262,144
24.91.0.0/1665,536
24.98.0.0/15131,072
24.104.0.0/1732,768
24.104.128.0/198,192
24.118.0.0/1665,536
24.124.128.0/1732,768
24.125.0.0/1665,536
24.126.0.0/15131,072
24.128.0.0/1665,536
24.129.0.0/1732,768
24.130.0.0/15131,072
24.147.0.0/1665,536
24.153.64.0/198,192
24.218.0.0/1665,536
24.245.0.0/1816,384
48.44.1.0/24256
48.44.2.0/24256
48.44.4.0/24256
48.44.6.0/23512
48.44.8.0/23512
48.44.28.0/221,024
48.44.32.0/23512
48.44.34.0/24256
48.44.36.0/221,024
48.44.51.0/24256
48.44.52.0/23512
48.44.54.0/24256
48.44.64.0/221,024
48.44.68.0/23512
48.44.71.0/24256
48.44.72.0/212,048
48.44.81.0/24256
48.44.82.0/23512
48.44.84.0/24256
48.44.86.0/23512
48.44.88.0/23512
48.44.92.0/221,024
48.44.96.0/221,024
48.44.101.0/24256
48.44.102.0/23512
48.44.104.0/221,024
48.44.109.0/24256
48.44.110.0/23512
48.44.113.0/24256
48.44.114.0/23512
48.44.117.0/24256
48.44.118.0/23512
48.44.122.0/23512
48.44.124.0/24256
48.44.126.0/23512
48.44.160.0/204,096
48.44.192.0/212,048
48.44.200.0/221,024
48.44.204.0/221,024
48.44.208.0/221,024
48.44.212.0/221,024
48.44.216.0/221,024
48.44.220.0/221,024
48.45.0.0/198,192
48.45.0.0/23512
48.45.2.0/23512
48.45.4.0/23512
48.45.8.0/221,024
48.45.12.0/23512
48.45.14.0/23512
48.45.16.0/221,024
48.45.20.0/221,024
48.45.24.0/212,048
48.45.32.0/204,096
48.45.32.0/23512
48.45.34.0/23512
48.45.36.0/23512
48.45.38.0/23512
48.45.40.0/212,048
48.45.48.0/204,096
48.45.64.0/1816,384
48.45.64.0/23512
48.45.66.0/23512
48.45.68.0/221,024
48.45.72.0/221,024
48.45.76.0/23512
48.45.78.0/23512
48.45.80.0/212,048
48.45.88.0/212,048
48.45.96.0/212,048
48.45.104.0/212,048
48.45.112.0/212,048
48.45.120.0/212,048
48.45.128.0/24256
48.45.129.0/24256

Showing the first 100 of 426, in address order. Complete list on RIPEstat

IPv6 prefixes (5 prefixes)

Prefix
2001:558::/29
2601::/20
2603:2000::/20
2603:3000::/24
2620:fd:8000::/48

Neighbours

Upstreams (transit or peers) (31)

ASNetworkVisibility
AS1299Arelion Sweden AB49,690
AS174Cogent Communications, LLC34,354
AS2914NTT America, Inc.20,097
AS6453TATA COMMUNICATIONS (AMERICA) INC19,025
AS6939Hurricane Electric LLC15,555
AS6762TELECOM ITALIA SPARKLE S.p.A.14,292
AS5511Opentransit Orange S.A.8,980
AS3320Deutsche Telekom AG7,978
AS3257GTT Communications Inc.7,519
AS3491PCCW Global (HK) Ltd.6,364
AS6461Zayo Bandwidth6,316
AS3356Level 3 Parent, LLC5,751
AS12956TELEFONICA GLOBAL SOLUTIONS SL5,220
AS6830LibertyGlobal Liberty Global Europe Holding B.V.3,959
AS2516KDDI CORPORATION2,757
AS4637Telstra Global2,564
AS577Bell Canada2,151
AS17676SoftBank Corp.1,230
AS701Verizon Business873
AS286GTT Communications Inc.716
AS1273IDDQD-AS652
AS266409SECW TELECOM22
AS23470ReliableSite.Net LLC9
AS36498-8
AS3778-6
AS13331-6
AS6327Shaw Communications5
AS20473The Constant Company, LLC5
AS9304HGC Global Communications Limited4
AS60068Datacamp Limited2

The 30 most visible of 31.

Downstreams (customers) (114)

ASNetworkVisibility
AS33491Comcast Cable Communications, LLC29,234
AS33651Comcast Cable Communications, LLC17,040
AS7015Comcast Cable Communications, LLC15,788
AS33657Comcast Cable Communications, LLC14,719
AS7016Comcast Cable Communications, LLC13,859
AS33287Comcast Cable Communications, LLC13,059
AS33652Comcast Cable Communications, LLC8,541
AS33667Comcast Cable Communications, LLC8,306
AS33490Comcast Cable Communications, LLC8,269
AS33650Comcast Cable Communications, LLC7,718
AS13367-7,534
AS7725-7,493
AS21508Comcast Cable Communications, LLC7,285
AS33662-6,617
AS33668-6,590
AS22909-5,338
AS33660Comcast Cable Communications, LLC5,083
AS33661Comcast Cable Communications, LLC4,545
AS33659-3,640
AS13649Flexential Colorado Corp.3,472
AS20214Comcast Cable Communications, LLC3,049
AS60068Datacamp Limited2,926
AS22258-2,673
AS33654Comcast Cable Communications, LLC2,521
AS8047GENERAL COMMUNICATION, INC.2,092
AS33489-2,020
AS33666Comcast Cable Communications, LLC1,502
AS19855Masergy Communications, Inc.1,043
AS20473The Constant Company, LLC959
AS23470ReliableSite.Net LLC952

The 30 most visible of 114.

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.