AS number 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
Number of IPv4 71,680
Number of IPv6 80,998,029,914,180,154,705,313,792
ASN type Business
Registry arin
Allocated 24 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
50.227.24.0/24 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
141.104.145.20 ██████████ 1
173.242.174.203 ██████████ 1
50.205.217.50 ██████████ 1
50.204.101.60 ██████████ 1
50.216.229.251 ██████████ 1
50.235.34.25 ██████████ 1
50.204.101.61 ██████████ 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

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

IP Address ASN Details
50.216.229.232 AS21508 Comcast Cable Communications, LLC 2.95ms from Ashburn, US
2001:559:841c:4::100 AS21508 Comcast Cable Communications, LLC 4.75ms from Ashburn, US
50.204.101.75 AS21508 Comcast Cable Communications, LLC 3.83ms from Ashburn, US
198.90.112.1 AS21508 Comcast Cable Communications, LLC 2.97ms from Ashburn, US
2001:559:c290:5::946 AS21508 Comcast Cable Communications, LLC 13.31ms from Atlanta, US
50.228.113.1 AS21508 Comcast Cable Communications, LLC 3.73ms from Ashburn, US
2001:559:49b:1f07:dead:beef:123:157 AS21508 Comcast Cable Communications, LLC 6.14ms from Ashburn, US
50.235.34.0 AS21508 Comcast Cable Communications, LLC 11.68ms from Atlanta, US
50.217.207.4 AS21508 Comcast Cable Communications, LLC 8.95ms from Washington, US
205.223.19.19 AS21508 Comcast Cable Communications, LLC 5.04ms from Ashburn, US
50.219.13.30 AS21508 Comcast Cable Communications, LLC 9.93ms from Ashburn, US
157.240.147.22 AS21508 Comcast Cable Communications, LLC 11.59ms from Atlanta, US
173.242.174.1 AS21508 Comcast Cable Communications, LLC 5.06ms from Ashburn, US
50.205.217.248 AS21508 Comcast Cable Communications, LLC 5.01ms from Ashburn, US
50.219.12.43 AS21508 Comcast Cable Communications, LLC 6.58ms from Ashburn, US
50.229.113.2 AS21508 Comcast Cable Communications, LLC 5.74ms from Ashburn, US
50.217.1.1 AS21508 Comcast Cable Communications, LLC 3.43ms from Ashburn, US
50.218.47.1 AS21508 Comcast Cable Communications, LLC 12.50ms from Atlanta, US
157.240.148.32 AS21508 Comcast Cable Communications, LLC 4.44ms 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
87.149.190.212 AS3320 Deutsche Telekom AG 3.50ms from Duesseldorf, DE
125.121.76.196 AS4134 CHINANET-BACKBONE 5.65ms from Hangzhou, CN
67.227.5.84 AS17252 Colocation America Corporation 0.32ms from Los Angeles, US
88.2.21.52 AS3352 TELEFONICA DE ESPANA S.A.U. 8.91ms from Madrid, ES
178.80.172.148 AS35819 Etihad Etisalat, a joint stock company 3.22ms from Manama, BH
103.44.213.148 AS136787 PacketHub S.A. 0.36ms from New York City, US
179.159.193.212 AS28573 Claro NXT Telecomunicacoes Ltda 7.11ms from Osasco, BR
88.180.195.100 AS12322 Free SAS 2.00ms from Paris, FR
39.81.45.148 AS4837 CHINA UNICOM China169 Backbone 10.15ms from Qingdao, CN
84.37.2.20 AS4766 Korea Telecom 0.87ms from Seoul, KR
2.21.120.100 AS32787 Akamai Technologies, Inc. 0.17ms from Singapore, SG
1.163.7.132 AS3462 Data Communication Business Group 1.35ms from Taipei, TW
114.36.76.132 AS3462 Data Communication Business Group 1.59ms from Taipei, TW
99.234.201.244 AS812 Rogers Communications Canada Inc. 4.28ms from Toronto, CA
148.78.241.36 AS16811 SageNet LLC 0.56ms from Atlanta, US
97.119.245.52 AS209 CenturyLink Communications, LLC 10.86ms from Chicago, US
1.38.15.84 AS38266 Vodafone Idea Ltd 3.45ms from Delhi, IN
20.82.247.4 AS8075 Microsoft Corporation 0.25ms from Dublin, IE
79.197.81.116 AS3320 Deutsche Telekom AG 6.01ms from Frankfurt am Main, DE
46.95.209.148 AS3320 Deutsche Telekom AG 7.67ms from Frankfurt am Main, DE
2.96.21.244 AS13285 TalkTalk Communications Limited 4.37ms from London, GB
86.159.41.212 AS2856 British Telecommunications PLC 7.24ms from London, GB
187.38.124.4 AS28573 Claro NXT Telecomunicacoes Ltda 2.88ms from Osasco, BR
112.229.21.196 AS4837 CHINA UNICOM China169 Backbone 6.21ms from Qingdao, CN
52.207.235.164 AS14618 Amazon.com, Inc. 0.41ms from Reston, US

Traceroute

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

$
traceroute -a -n -q1 -m13 141.104.11.64
traceroute to 141.104.11.64 (141.104.11.64): 13 hops max, 52 byte packets
1 [AS174] 38.104.222.190 0.709 ms
2 *
3 *
4 *
5 [AS7922] 96.110.36.181 14.013 ms
6 [AS7922] 96.110.43.198 24.451 ms
8 [AS7922] 96.110.203.22 24.88 ms
9 [AS7922] 96.110.203.25 24.551 ms
10 [AS7922] 96.110.203.58 25.236 ms
11 *
12 *
13 *
Measurement taken from IPinfo ProbeNet in Boca Raton, 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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