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 80,998,029,914,180,154,705,313,792
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
2001:559:720::/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
50.235.34.25 ██████████ 1
50.204.101.60 ██████████ 1
173.242.174.203 ██████████ 1
50.205.217.50 ██████████ 1
50.216.229.251 ██████████ 1
50.204.101.61 ██████████ 1
141.104.145.20 ██████████ 1

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Peers

There are 47 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
AS19923 Shenandoah University
AS2134 Santander Global Technology, S.L.U
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
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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 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
AS19923 Shenandoah University
AS2134 Santander Global Technology, S.L.U
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
50.219.12.43 AS21508 Comcast Cable Communications, LLC 6.79ms from Ashburn, US
157.240.148.33 AS21508 Comcast Cable Communications, LLC 4.58ms from Ashburn, US
50.228.113.1 AS21508 Comcast Cable Communications, LLC 3.89ms from Ashburn, US
2001:559:c290:5::946 AS21508 Comcast Cable Communications, LLC 13.39ms from Atlanta, US
50.216.229.247 AS21508 Comcast Cable Communications, LLC 3.08ms from Ashburn, US
50.235.34.255 AS21508 Comcast Cable Communications, LLC 11.67ms from Atlanta, US
2001:559:49b:1f07:dead:beef:123:157 AS21508 Comcast Cable Communications, LLC 6.43ms from Ashburn, US
50.217.207.4 AS21508 Comcast Cable Communications, LLC 8.32ms from Ashburn, US
157.240.147.12 AS21508 Comcast Cable Communications, LLC 11.59ms from Atlanta, US
50.205.217.244 AS21508 Comcast Cable Communications, LLC 5.26ms from Ashburn, US
50.218.47.2 AS21508 Comcast Cable Communications, LLC 12.51ms from Atlanta, US
173.242.174.1 AS21508 Comcast Cable Communications, LLC 5.31ms from Ashburn, US
50.217.1.1 AS21508 Comcast Cable Communications, LLC 3.59ms from Ashburn, US
50.229.113.2 AS21508 Comcast Cable Communications, LLC 5.79ms from Ashburn, US
50.204.101.75 AS21508 Comcast Cable Communications, LLC 3.91ms from Ashburn, US
50.219.13.30 AS21508 Comcast Cable Communications, LLC 10.00ms from Ashburn, US
198.90.112.3 AS21508 Comcast Cable Communications, LLC 3.06ms from Ashburn, US
205.223.19.47 AS21508 Comcast Cable Communications, LLC 5.10ms 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
107.13.29.4 AS11426 Charter Communications Inc 11.92ms from Ashburn, US
156.208.95.4 AS8452 TE-AS 5.65ms from Cairo, EG
99.72.33.84 AS7018 AT&T Enterprises, LLC 11.61ms from Chicago, US
91.36.217.4 AS3320 Deutsche Telekom AG 7.48ms from Frankfurt am Main, DE
98.161.11.228 AS22773 Cox Communications Inc. 5.40ms from Kansas City, US
212.46.183.212 AS44512 KONVERTO SPA 4.81ms from Milan, IT
47.18.166.212 AS6128 Cablevision Systems Corp. 2.52ms from New York City, US
73.195.176.164 AS7922 Comcast Cable Communications, LLC 5.04ms from New York City, US
37.44.238.4 AS34534 FBW NETWORKS SAS 0.14ms from Paris, FR
187.141.123.52 AS8151 UNINET 6.36ms from Santiago de Queretaro, MX
189.250.248.196 AS8151 UNINET 9.59ms from Santiago de Queretaro, MX
124.54.69.116 AS17858 LG POWERCOMM 1.29ms from Seoul, KR
175.115.242.116 AS9318 SK Broadband Co Ltd 3.03ms from Seoul, KR
13.228.99.148 AS16509 Amazon.com, Inc. 0.10ms from Singapore, SG
85.130.150.68 AS6810 "Bezeq"- THE ISRAEL TELECOMMUNICATION CORP. LTD. 1.24ms from Tel Aviv, IL
185.130.144.4 AS202913 CLOUDWIFI, SL 7.63ms from Barcelona, ES
200.43.1.4 AS265686 PROVIDERS S.A. 8.15ms from Cordoba, AR
177.20.209.52 AS262868 Itnet ltda 10.71ms from Joao Pessoa, BR
103.87.143.20 AS23860 Alliance Broadband Services Pvt. Ltd. 0.20ms from Kolkata, IN
90.212.150.36 AS5607 Sky UK Limited 4.71ms from London, GB
213.59.226.20 AS12389 PJSC Rostelecom 0.75ms from Moscow, RU
125.105.227.116 AS4134 CHINANET-BACKBONE 7.62ms from Ningbo, CN
222.133.169.4 AS4837 CHINA UNICOM China169 Backbone 7.69ms from Qingdao, CN
118.132.75.68 AS9812 Oriental Cable Network Co., Ltd. 7.12ms from Shanghai, CN
119.23.21.100 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 1.73ms from Shenzhen, CN

Traceroute

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

$
traceroute -a -n -q1 -f4 50.205.217.244
traceroute to 50.205.217.244 (50.205.217.244): 64 hops max, 52 byte packets
4 [AS174] 149.11.166.80 5.213 ms
5 *
6 [AS174] 154.54.11.166 83.93 ms
7 [AS7922] 96.110.32.113 89.897 ms
8 *
9 [AS7922] 96.110.203.234 116.268 ms
10 [AS7922] 96.216.18.78 94.015 ms
11 *
12 [AS7922] 96.216.18.102 94.147 ms
13 [AS21508] 50.205.217.244 94.571 ms
Measurement taken from IPinfo ProbeNet in Grantham, GB
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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