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 6
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 6 domain names hosted across 7 IP addresses on this ASN.

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IP Address Domain Domains on this IP
50.204.101.60 ██████████ 1
141.104.145.20 ██████████ 1
50.205.217.50 ██████████ 1
50.235.34.25 ██████████ 1
50.204.101.61 ██████████ 1
173.242.174.203 ██████████ 1
50.216.229.251 ██████████ 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
AS400114 Apogee Telecom Inc.
AS40485 SANDY SPRING BANK
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
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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
AS400114 Apogee Telecom Inc.
AS40485 SANDY SPRING BANK
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
2001:559:49b:1f07:dead:beef:123:157 AS21508 Comcast Cable Communications, LLC 6.23ms from Ashburn, US
50.216.229.1 AS21508 Comcast Cable Communications, LLC 2.98ms from Ashburn, US
157.240.148.16 AS21508 Comcast Cable Communications, LLC 4.48ms from Ashburn, US
198.90.112.1 AS21508 Comcast Cable Communications, LLC 3.00ms from Ashburn, US
50.217.1.1 AS21508 Comcast Cable Communications, LLC 3.47ms from Ashburn, US
50.219.13.30 AS21508 Comcast Cable Communications, LLC 9.59ms from Ashburn, US
2001:559:c290:5::946 AS21508 Comcast Cable Communications, LLC 13.38ms from Atlanta, US
50.229.113.2 AS21508 Comcast Cable Communications, LLC 5.70ms from Ashburn, US
50.204.101.75 AS21508 Comcast Cable Communications, LLC 3.81ms from Ashburn, US
205.223.19.19 AS21508 Comcast Cable Communications, LLC 5.09ms from Ashburn, US
157.240.147.34 AS21508 Comcast Cable Communications, LLC 11.54ms from Atlanta, US
50.235.34.0 AS21508 Comcast Cable Communications, LLC 11.69ms from Atlanta, US
173.242.174.1 AS21508 Comcast Cable Communications, LLC 5.16ms from Ashburn, US
50.205.217.243 AS21508 Comcast Cable Communications, LLC 5.06ms from Ashburn, US
50.228.113.1 AS21508 Comcast Cable Communications, LLC 3.74ms from Ashburn, US
50.217.207.4 AS21508 Comcast Cable Communications, LLC 8.20ms from Ashburn, US
50.219.12.43 AS21508 Comcast Cable Communications, LLC 6.63ms from Ashburn, US
50.218.47.1 AS21508 Comcast Cable Communications, LLC 12.53ms from Atlanta, 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
109.107.244.148 AS9038 Al Bahrainia al Urdunia Liltaknia Wa Alitisalat Plc. Co 2.05ms from Amman, JO
37.223.156.52 AS12430 VODAFONE ESPANA S.A.U. 4.07ms from Barcelona, ES
111.13.150.164 AS9808 China Mobile Communications Group Co., Ltd. 2.14ms from Beijing, CN
141.142.31.4 AS1224 University of Illinois 3.05ms from Chicago, US
117.97.79.20 AS45609 Bharti Airtel Ltd. AS for GPRS Service 5.84ms from Delhi, IN
34.253.99.212 AS16509 Amazon.com, Inc. 0.29ms from Dublin, IE
72.42.115.4 AS187 DNScast 0.18ms from Dublin, IE
121.199.65.68 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 5.01ms from Hangzhou, CN
217.195.219.52 AS3216 PJSC "Vimpelcom" 0.34ms from Krasnoyarsk, RU
79.154.151.244 AS3352 TELEFONICA DE ESPANA S.A.U. 8.39ms from Madrid, ES
3.96.189.20 AS16509 Amazon.com, Inc. 0.12ms from Montreal, CA
106.225.238.84 AS134238 CHINANET Jiangx province IDC network 0.53ms from Nanchang, CN
71.168.152.212 AS701 Verizon Business 2.84ms from New York City, US
179.55.99.20 AS26615 TIM S/A 1.49ms from Rio de Janeiro, BR
187.141.123.52 AS8151 UNINET 6.14ms from Santiago de Queretaro, MX
182.217.65.244 AS17858 LG POWERCOMM 1.91ms from Seoul, KR
222.117.241.148 AS4766 Korea Telecom 1.52ms from Seoul, KR
89.251.233.100 AS30892 DEUTSCHE TELEKOM GLOBAL BUSINESS SOLUTIONS IBERIA SL 5.48ms from Zaragoza, ES
157.187.169.100 AS668 United States Department of Defense (DoD) 2.69ms from Ashburn, US
39.105.112.132 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 2.04ms from Beijing, CN
35.155.159.164 AS16509 Amazon.com, Inc. 0.15ms from Boardman, US
23.229.30.116 AS55286 B2 Net Solutions Inc. 0.18ms from Buffalo, US
41.233.217.212 AS8452 TE-AS 10.98ms from Cairo, EG
177.35.2.4 AS28573 Claro NXT Telecomunicacoes Ltda 4.77ms from Curitiba, BR
135.8.129.36 AS18676 Avaya LLC 2.29ms from Dallas, US

Traceroute

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

$
traceroute -a -n -q1 -m4 141.104.169.103
traceroute to 141.104.169.103 (141.104.169.103): 4 hops max, 52 byte packets
1 [AS399244] 66.59.208.1 0.277 ms
2 *
3 *
4 *
Measurement taken from IPinfo ProbeNet in Falkenstein, DE
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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