Autonomous System details

AS21508

Comcast Cable Communications, LLC  ·  comcast.com

United States

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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

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WHOIS Details

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                                                ASHandle:       AS21508
                                                OrgID:          AS21508
                                                ASName:         AS21508
                                                ASNumber:       AS21508
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

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

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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

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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
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ASN API & Database

Upstreams

There is 1 peer for this ASN.

upstreams Name
AS7922 Comcast Cable Communications, LLC
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ASN API & Database

Downstreams

There are 47 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
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.
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
50.204.101.18 AS21508 Comcast Cable Communications, LLC 3.73ms from Ashburn, US
157.240.147.42 AS21508 Comcast Cable Communications, LLC 11.56ms from Atlanta, US
2001:559:c290:5::941 AS21508 Comcast Cable Communications, LLC 13.33ms from Atlanta, US
50.216.229.2 AS21508 Comcast Cable Communications, LLC 2.99ms from Ashburn, US
205.223.19.47 AS21508 Comcast Cable Communications, LLC 5.09ms from Ashburn, US
50.217.207.4 AS21508 Comcast Cable Communications, LLC 8.23ms from Ashburn, US
50.235.34.0 AS21508 Comcast Cable Communications, LLC 11.69ms from Atlanta, US
50.219.12.43 AS21508 Comcast Cable Communications, LLC 6.81ms from Ashburn, US
50.228.113.1 AS21508 Comcast Cable Communications, LLC 3.76ms from Ashburn, US
50.218.47.1 AS21508 Comcast Cable Communications, LLC 12.51ms from Atlanta, US
157.240.148.34 AS21508 Comcast Cable Communications, LLC 4.46ms from Ashburn, US
198.90.112.1 AS21508 Comcast Cable Communications, LLC 3.00ms from Ashburn, US
50.205.217.1 AS21508 Comcast Cable Communications, LLC 5.04ms from Ashburn, US
2001:559:49b:1f07:dead:beef:123:157 AS21508 Comcast Cable Communications, LLC 14.92ms from Atlanta, US
50.229.113.2 AS21508 Comcast Cable Communications, LLC 5.67ms from Ashburn, US
173.242.174.1 AS21508 Comcast Cable Communications, LLC 5.13ms from Ashburn, US
50.217.1.1 AS21508 Comcast Cable Communications, LLC 3.49ms from Ashburn, US
50.219.13.30 AS21508 Comcast Cable Communications, LLC 9.51ms 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
81.205.125.132 AS1136 KPN B.V. 2.53ms from Amsterdam, NL
41.239.49.4 AS8452 TE-AS 8.01ms from Cairo, EG
108.130.244.36 AS16509 Amazon.com, Inc. 0.55ms from Dublin, IE
76.132.243.132 AS7922 Comcast Cable Communications, LLC 8.40ms from Fremont, US
116.110.21.116 AS24086 Viettel Corporation 9.39ms from Ho Chi Minh City, VN
61.76.197.164 AS4766 Korea Telecom 7.35ms from Incheon, KR
73.224.213.148 AS7922 Comcast Cable Communications, LLC 9.26ms from Orlando, US
64.32.88.4 AS6400 Compañía Dominicana de Teléfonos S. A. 2.59ms from Santo Domingo, DO
191.186.248.68 AS28573 Claro NXT Telecomunicacoes Ltda 10.31ms from Sao Paulo, BR
210.124.194.20 AS3786 LG DACOM Corporation 8.67ms from Seoul, KR
222.138.178.20 AS4837 CHINA UNICOM China169 Backbone 4.67ms from Zhengzhou, CN
195.242.213.148 AS9009 M247 Europe SRL 0.19ms from Zuerich, CH
109.107.244.148 AS9038 Al Bahrainia al Urdunia Liltaknia Wa Alitisalat Plc. Co 1.87ms from Amman, JO
51.136.119.132 AS8075 Microsoft Corporation 0.31ms from Amsterdam, NL
72.42.115.4 AS187 DNScast 0.16ms from Bucharest, RO
104.3.251.180 AS7018 AT&T Enterprises, LLC 4.51ms from Dallas, US
108.157.129.4 AS16509 Amazon.com, Inc. 0.20ms from Madrid, ES
81.44.13.100 AS3352 TELEFONICA DE ESPANA S.A.U. 1.37ms from Madrid, ES
194.110.88.116 AS9009 M247 Europe SRL 0.06ms from Madrid, ES
125.112.115.36 AS4134 CHINANET-BACKBONE 8.27ms from Ningbo, CN
125.111.214.228 AS4134 CHINANET-BACKBONE 6.56ms from Ningbo, CN
183.125.152.68 AS4766 Korea Telecom 4.80ms from Seoul, KR
45.231.70.52 AS267202 LIFE NETWORKS E COMUNICAÇÃO LTDA-ME 2.06ms from São Paulo, BR
61.161.156.100 AS4837 CHINA UNICOM China169 Backbone 1.67ms from Tieling, CN
188.214.235.36 AS152179 GLOBAL COMMUNICATION NETWORK LIMITED 0.68ms 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 -f3 -m14 141.104.103.135
traceroute to 141.104.103.135 (141.104.103.135): 14 hops max, 52 byte packets
3 [AS174] 154.24.8.229 1.39 ms
4 [AS174] 154.54.1.173 1.37 ms
5 *
6 [AS7922] 96.110.34.165 59.097 ms
7 [AS7922] 96.110.43.198 68.994 ms
8 [AS7922] 68.86.172.250 89.122 ms
9 [AS7922] 96.110.203.22 83.459 ms
10 [AS7922] 96.110.203.25 71.198 ms
11 [AS7922] 96.110.203.58 73.77 ms
12 *
13 *
14 *
Measurement taken from IPinfo ProbeNet in Seattle, US
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.

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