Autonomous System details

AS21508

Comcast Cable Communications, LLC  ·  comcast.com

United States

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

AS21508 – Comcast Cable Communications, LLC

Field Value
Country United States
Website comcast.com
Hosted domains 10
IPv4 addresses 71,424
IPv6 addresses 79,789,104,094,565,525,530,607,616
ASN type Business
Registry arin
Allocated 25 years ago on May 16, 2001
Updated 5 years ago on Jan 25, 2021

IP Ranges

Netblock Company Num of IPs
141.104.0.0/16 Virginia Department of Education 65,536
50.219.12.0/22 Comcast Cable Communications, LLC 1,024
198.90.112.0/22 WhiteSky Communications, LLC. 1,024
50.204.101.0/24 Comcast Cable Communications, LLC 256
50.205.217.0/24 Comcast Cable Communications, LLC 256
50.216.229.0/24 Comcast Cable Communications, LLC 256
50.217.1.0/24 Comcast Cable Communications, LLC 256
50.217.207.0/24 Comcast Cable Communications, LLC 256
50.218.47.0/24 Comcast Cable Communications, LLC 256
50.228.113.0/24 Comcast Cable Communications, LLC 256
50.229.113.0/24 Comcast Cable Communications, LLC 256
50.229.114.0/24 Comcast Cable Communications, LLC 256
50.235.34.0/24 Comcast Cable Communications, LLC 256
157.240.147.0/24 Facebook, Inc. 256
157.240.148.0/24 Facebook, Inc. 256
173.242.174.0/24 County of Henrico 256
204.194.47.0/24 Va. Dept. of Rehabilitative Services 256
205.223.19.0/24 Virginia State Lottery Department 256

Netblock Company
2001:559:8a::/48 Comcast Cable Communications, LLC
2001:559:c0::/48 Comcast Cable Communications, LLC
2001:559:f7::/48 Comcast Cable Communications, LLC
2001:559:220::/48 Comcast Cable Communications, LLC
2001:559:243::/48 Comcast Cable Communications, LLC
2001:559:280::/48 Comcast Cable Communications, LLC
2001:559:37d::/48 Comcast Cable Communications, LLC
2001:559:3ac::/48 Comcast Cable Communications, LLC
2001:559:3b9::/48 Comcast Cable Communications, LLC
2001:559:3c8::/48 Comcast Cable Communications, LLC
2001:559:40a::/48 Comcast Cable Communications, LLC
2001:559:49a::/48 Comcast Cable Communications, LLC
2001:559:49b::/48 Comcast Cable Communications, LLC
2001:559:53c::/48 Comcast Cable Communications, LLC
2001:559:5c9::/48 Comcast Cable Communications, LLC
2001:559:5db::/48 Comcast Cable Communications, LLC
2001:559:72b::/48 Comcast Cable Communications, LLC
2001:559:73c::/48 Comcast Cable Communications, LLC
2001:559:788::/48 Comcast Cable Communications, LLC
2001:559:78a::/48 Comcast Cable Communications, LLC
2001:559:79d::/48 Comcast Cable Communications, LLC
2001:559:79e::/48 Comcast Cable Communications, LLC
2001:559:7a7::/48 Comcast Cable Communications, LLC
2001:559:7db::/48 Comcast Cable Communications, LLC
2001:559:804c::/48 Comcast Cable Communications, LLC
2001:559:81bf::/48 Comcast Cable Communications, LLC
2001:559:81d7::/48 Comcast Cable Communications, LLC
2001:559:81d8::/48 Comcast Cable Communications, LLC
2001:559:8201::/48 Comcast Cable Communications, LLC
2001:559:82fd::/48 Comcast Cable Communications, LLC
2001:559:833e::/48 Comcast Cable Communications, LLC
2001:559:8416::/48 Comcast Cable Communications, LLC
2001:559:841c::/48 Comcast Cable Communications, LLC
2001:559:8445::/48 Comcast Cable Communications, LLC
2001:559:84a7::/48 Comcast Cable Communications, LLC
2001:559:8535::/48 Comcast Cable Communications, LLC
2001:559:85c1::/48 Comcast Cable Communications, LLC
2001:559:85ff::/48 Comcast Cable Communications, LLC
2001:559:8604::/48 Comcast Cable Communications, LLC
2001:559:871a::/48 Comcast Cable Communications, LLC
2001:559:875f::/48 Comcast Cable Communications, LLC
2001:559:8773::/48 Comcast Cable Communications, LLC
2001:559:87b2::/48 Comcast Cable Communications, LLC
2001:559:c071::/48 Comcast Cable Communications, LLC
2001:559:c0f6::/48 Comcast Cable Communications, LLC
2001:559:c0f7::/48 Comcast Cable Communications, LLC
2001:559:c0fa::/48 Comcast Cable Communications, LLC
2001:559:c10a::/48 Comcast Cable Communications, LLC
2001:559:c174::/48 Comcast Cable Communications, LLC
2001:559:c1a5::/48 Comcast Cable Communications, LLC
2001:559:c1ca::/48 Comcast Cable Communications, LLC
2001:559:c28f::/48 Comcast Cable Communications, LLC
2001:559:c290::/48 Comcast Cable Communications, LLC
2001:559:c2a7::/48 Comcast Cable Communications, LLC
2001:559:c344::/48 Comcast Cable Communications, LLC
2001:559:c3e9::/48 Comcast Cable Communications, LLC
2001:559:c458::/48 Comcast Cable Communications, LLC
2001:559:c45f::/48 Comcast Cable Communications, LLC
2001:559:c460::/48 Comcast Cable Communications, LLC
2001:559:c495::/48 Comcast Cable Communications, LLC
2001:559:c4c8::/48 Comcast Cable Communications, LLC
2001:559:c4c9::/48 Comcast Cable Communications, LLC
2001:559:c4db::/48 Comcast Cable Communications, LLC
2001:559:c4f6::/48 Comcast Cable Communications, LLC
2001:559:c515::/48 Comcast Cable Communications, LLC
2001:559:c538::/48 Comcast Cable Communications, LLC

Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
IP Ranges API

WHOIS Details

Join for free to view WHOIS details › 

                                                ASHandle:       AS21508
                                                OrgID:          AS21508
                                                ASName:         AS21508
                                                ASNumber:       AS21508
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
Get this data and more with IPinfo's WHOIS product - effortless access to POCs, ORGs, and Networks, for actionable intelligence.
IP WHOIS API & Database

Hosted Domains

There are 10 domain names hosted across 7 IP addresses on this ASN.

Join for free to explore hosted domains ›
IP Address Domain Domains on this IP
50.216.229.251 ██████████ 1
50.205.217.50 ██████████ 1
50.204.101.60 ██████████ 1
141.104.145.20 ██████████ 1
50.204.101.61 ██████████ 1
50.235.34.25 ██████████ 1
173.242.174.203 ██████████ 1

Discover all domains hosted on a single IP address with IPinfo's powerful Hosted Domains (Reverse IP) solution.
Useful for Cybersecurity
Hosted Domains API & Database

Peers

There are 48 peers for this ASN.

Peers Name
AS10794 Bank of America, National Association
AS11679 Stihl Inc.
AS11739 Digital Fortress, Inc.
AS13335 Cloudflare, Inc.
AS14583 Virginia Information Technologies Agency (VITA)
AS15173 Newmarket Corporation
AS15297 EPLUS, Inc.
AS17381 Williams-Sonoma
AS18773 County of Henrico
AS19404 Quest
AS19923 Shenandoah University
AS2134 Santander Global Technology and Operations, S.L.
AS22274 Standard Motor Products, Inc
AS23209 Virginia Housing Development Authority
AS27326 VCU HEALTH SYSTEM AUTHORITY
AS27341 Gannet Fleming, Inc.
AS30299 THE MARTIN AGENCY
AS32540 HP Hood
AS36040 Google LLC
AS36244 Shenandoah Valley Electric Cooperative
AS36364 Mary Washington Hospital, Inc.
AS393415 LITTLER MENDELSON, P.C.
AS393591 Gamewood Technology Group, Inc.
AS393613 Virginia Credit Union, Inc.
AS394058 Telos Corporation
AS394276 TurnAround Factor, Inc.
AS395441 EdgeConneX, INC
AS395527 VSU_AS395527
AS395772 Augusta Health Care, Inc
AS396083 Framatome Inc.
AS396452 Loudoun Water
AS397039 WorldStrides
AS397190 WSP
AS397483 UNIVERSAL HEALTH SERVICES
AS398475 Drilling Info Inc.
AS399099 petersburg city public schools
AS399232 Seton Home Study School
AS399607 Louisa County Public Schools
AS399938 Berkshire Hathaway Energy Company
AS400114 Apogee Telecom Inc.
AS40641 MGW Telephone Company, Inc.
AS46643 Virginia College Savings Plan
AS54219 Matthews International Corporation
AS54391 Crutchfield New Media LLC
AS54883 City of Richmond, Virginia
AS62971 County of Chesterfield
AS63468 Infinitt North America, Inc.
AS7922 Comcast Cable Communications, LLC
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Upstreams

There is 1 peer for this ASN.

upstreams Name
AS7922 Comcast Cable Communications, LLC
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Downstreams

There are 46 downstreams for this ASN.

Downstreams Name
AS10794 Bank of America, National Association
AS11679 Stihl Inc.
AS11739 Digital Fortress, Inc.
AS13335 Cloudflare, Inc.
AS14583 Virginia Information Technologies Agency (VITA)
AS15173 Newmarket Corporation
AS15297 EPLUS, Inc.
AS17381 Williams-Sonoma
AS18773 County of Henrico
AS19404 Quest
AS19923 Shenandoah University
AS2134 Santander Global Technology and Operations, S.L.
AS22274 Standard Motor Products, Inc
AS23209 Virginia Housing Development Authority
AS27326 VCU HEALTH SYSTEM AUTHORITY
AS27341 Gannet Fleming, Inc.
AS30299 THE MARTIN AGENCY
AS32540 HP Hood
AS36040 Google LLC
AS36244 Shenandoah Valley Electric Cooperative
AS36364 Mary Washington Hospital, Inc.
AS393415 LITTLER MENDELSON, P.C.
AS393591 Gamewood Technology Group, Inc.
AS393613 Virginia Credit Union, Inc.
AS394058 Telos Corporation
AS394276 TurnAround Factor, Inc.
AS395441 EdgeConneX, INC
AS395527 VSU_AS395527
AS395772 Augusta Health Care, Inc
AS396083 Framatome Inc.
AS396452 Loudoun Water
AS397039 WorldStrides
AS397190 WSP
AS397483 UNIVERSAL HEALTH SERVICES
AS398475 Drilling Info Inc.
AS399099 petersburg city public schools
AS399232 Seton Home Study School
AS399607 Louisa County Public Schools
AS400114 Apogee Telecom Inc.
AS40641 MGW Telephone Company, Inc.
AS46643 Virginia College Savings Plan
AS54219 Matthews International Corporation
AS54391 Crutchfield New Media LLC
AS54883 City of Richmond, Virginia
AS62971 County of Chesterfield
AS63468 Infinitt North America, Inc.
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Pingable IPs

18 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
173.242.174.1 AS21508 Comcast Cable Communications, LLC 5.13ms from Ashburn, US
50.218.47.1 AS21508 Comcast Cable Communications, LLC 12.54ms from Atlanta, US
50.229.113.2 AS21508 Comcast Cable Communications, LLC 5.81ms from Ashburn, US
198.90.112.6 AS21508 Comcast Cable Communications, LLC 3.07ms from Ashburn, US
2001:559:49b:1f07:dead:beef:123:157 AS21508 Comcast Cable Communications, LLC 6.25ms from Ashburn, US
205.223.19.19 AS21508 Comcast Cable Communications, LLC 5.09ms from Ashburn, US
50.217.207.4 AS21508 Comcast Cable Communications, LLC 8.18ms from Ashburn, US
50.219.13.30 AS21508 Comcast Cable Communications, LLC 9.66ms from Ashburn, US
50.216.229.247 AS21508 Comcast Cable Communications, LLC 3.00ms from Ashburn, US
50.235.34.2 AS21508 Comcast Cable Communications, LLC 11.73ms from Atlanta, US
50.205.217.1 AS21508 Comcast Cable Communications, LLC 5.02ms from Ashburn, US
50.217.1.1 AS21508 Comcast Cable Communications, LLC 3.51ms from Ashburn, US
50.219.12.41 AS21508 Comcast Cable Communications, LLC 6.78ms from Ashburn, US
157.240.147.14 AS21508 Comcast Cable Communications, LLC 11.56ms from Atlanta, US
50.228.113.1 AS21508 Comcast Cable Communications, LLC 3.76ms from Ashburn, US
50.204.101.75 AS21508 Comcast Cable Communications, LLC 3.65ms from Ashburn, US
2001:559:c290:5::941 AS21508 Comcast Cable Communications, LLC 13.34ms from Atlanta, US
157.240.148.1 AS21508 Comcast Cable Communications, LLC 4.53ms from Ashburn, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
178.228.175.52 AS31615 Odido Netherlands B.V. 7.62ms from Amsterdam, NL
217.61.31.4 AS31034 Aruba S.p.A. 0.30ms from Arezzo, IT
37.80.123.148 AS3320 Deutsche Telekom AG 15.14ms from Berlin, DE
79.237.153.244 AS3320 Deutsche Telekom AG 4.01ms from Berlin, DE
18.18.242.20 AS3 Massachusetts Institute of Technology 0.46ms from Boston, US
139.212.136.36 AS4837 CHINA UNICOM China169 Backbone 2.22ms from Changchun, CN
185.229.151.148 AS204988 TDH-Net ApS 0.74ms from Copenhagen, DK
116.101.137.244 AS7552 Viettel Group 3.84ms from Hanoi, VN
66.64.120.228 AS18712 Everfast Fiber Networks LLC 1.45ms from Kansas City, US
139.64.133.132 AS33387 Nocix, LLC 0.02ms from Kansas City, US
46.159.75.148 AS12389 PJSC Rostelecom 17.10ms from Moscow, RU
60.151.205.132 AS17676 SoftBank Corp. 4.00ms from Osaka, JP
193.156.59.100 AS224 SIKT - KUNNSKAPSSEKTORENS TJENESTELEVERANDOR 1.61ms from Oslo, NO
93.170.75.100 AS205264 RocketNet Ltd. 0.88ms from Saint Petersburg, RU
122.201.111.4 AS38719 Dreamscape Networks Limited 0.21ms from Sydney, AU
177.8.195.68 AS262720 MELO TELECOMUNICACOES LTDA 8.48ms from Brasília, BR
188.65.19.196 AS48095 XT GLOBAL NETWORKS LTD. 7.69ms from Bucharest, RO
70.123.255.180 AS11427 Charter Communications Inc 9.45ms from Houston, US
154.203.220.116 AS44559 IT HOSTLINE LTD 0.34ms from Istanbul, TR
50.75.21.132 AS11351 Charter Communications Inc 8.51ms from New York City, US
134.241.1.132 AS1968 UMASSNET 6.77ms from New York City, US
187.38.124.4 AS28573 Claro NXT Telecomunicacoes Ltda 1.91ms from Osasco, BR
82.24.183.84 AS198831 GENIUSWEER SAS 0.30ms from Paris, FR
173.25.57.148 AS30036 Mediacom Communications Corp 5.00ms from Phoenix, US
20.116.58.164 AS8075 Microsoft Corporation 0.19ms from Toronto, CA

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 -f5 -m8 141.104.142.103
traceroute to 141.104.142.103 (141.104.142.103): 8 hops max, 52 byte packets
5 [AS6453] 116.0.86.4 0.28 ms
6 *
7 *
8 *
Measurement taken from IPinfo ProbeNet in Bandar Seri Begawan, BN
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS21508 at robtex.

Data built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs