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
50.205.217.50 ██████████ 1
173.242.174.203 ██████████ 1
50.204.101.60 ██████████ 1
50.216.229.251 ██████████ 1
50.235.34.25 ██████████ 1
141.104.145.20 ██████████ 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

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

IP Address ASN Details
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 6.21ms from Ashburn, US
50.219.13.30 AS21508 Comcast Cable Communications, LLC 10.19ms from Ashburn, US
205.223.19.19 AS21508 Comcast Cable Communications, LLC 5.06ms from Ashburn, US
50.228.113.1 AS21508 Comcast Cable Communications, LLC 3.78ms from Ashburn, US
50.218.47.2 AS21508 Comcast Cable Communications, LLC 12.54ms from Atlanta, US
50.217.1.1 AS21508 Comcast Cable Communications, LLC 3.45ms from Ashburn, US
50.235.34.0 AS21508 Comcast Cable Communications, LLC 11.69ms from Atlanta, US
50.229.113.2 AS21508 Comcast Cable Communications, LLC 5.68ms from Ashburn, US
157.240.148.31 AS21508 Comcast Cable Communications, LLC 4.48ms from Ashburn, US
157.240.147.43 AS21508 Comcast Cable Communications, LLC 11.60ms from Atlanta, US
50.216.229.1 AS21508 Comcast Cable Communications, LLC 2.98ms from Ashburn, US
198.90.112.1 AS21508 Comcast Cable Communications, LLC 3.02ms from Ashburn, US
173.242.174.1 AS21508 Comcast Cable Communications, LLC 5.12ms from Ashburn, US
2001:559:c290:5::941 AS21508 Comcast Cable Communications, LLC 13.30ms from Atlanta, US
50.219.12.43 AS21508 Comcast Cable Communications, LLC 6.68ms from Ashburn, US
50.204.101.75 AS21508 Comcast Cable Communications, LLC 3.88ms from Ashburn, US
50.217.207.4 AS21508 Comcast Cable Communications, LLC 8.24ms 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
97.148.86.212 AS6167 Verizon Business 14.66ms from Atlanta, US
20.107.214.52 AS8075 Microsoft Corporation 0.17ms from Dublin, IE
113.21.194.180 AS45474 NEXUSGUARD LIMITED 0.25ms from Hong Kong, HK
50.20.195.68 AS1097 Core Transit LLC 0.36ms from Los Angeles, US
12.47.174.180 AS7018 AT&T Enterprises, LLC 11.26ms from Los Angeles, US
79.7.244.228 AS3269 Telecom Italia S.p.A. 4.59ms from Milan, IT
80.84.114.20 AS21453 Flex Ltd. 2.07ms from Moscow, RU
210.223.240.180 AS4766 Korea Telecom 6.85ms from Seoul, KR
175.233.190.180 AS4766 Korea Telecom 2.54ms from Seoul, KR
203.209.232.244 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 2.37ms from Shanghai, CN
44.36.18.100 AS20473 The Constant Company, LLC 0.15ms from Wrocław, PL
109.107.244.148 AS9038 Batelco Jordan 1.87ms from Amman, JO
38.199.22.4 AS270020 T.V. SANV S A S (ALPAVISION HD) 4.21ms from Bogota, CO
50.203.222.68 AS7922 Comcast Cable Communications, LLC 1.96ms from Boston, US
176.113.179.100 AS209767 SAMTECO SERV SRL 0.34ms from Bucharest, RO
84.2.212.20 AS5483 Magyar Telekom Plc. 0.82ms from Budapest, HU
52.108.189.4 AS8075 Microsoft Corporation 0.18ms from Cardiff, GB
135.196.165.52 AS9009 M247 Europe SRL 10.09ms from Dubai, AE
123.21.147.52 AS45899 VNPT Corp 1.42ms from Ho Chi Minh City, VN
8.218.105.52 AS45102 Alibaba (US) Technology Co., Ltd. 0.68ms from Hong Kong, HK
85.106.239.148 AS9121 Turk Telekomunikasyon Anonim Sirketi 5.70ms from Istanbul, TR
213.59.226.20 AS12389 PJSC Rostelecom 0.67ms from Moscow, RU
88.56.25.84 AS3269 Telecom Italia S.p.A. 1.52ms from Rome, IT
201.192.227.68 AS11830 Instituto Costarricense de Electricidad y Telecom. 0.86ms from San Jose, CR
124.54.69.116 AS17858 LG POWERCOMM 1.25ms from Seoul, KR

Traceroute

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

$
traceroute -a -n -q1 -f5 50.219.13.30
traceroute to 50.219.13.30 (50.219.13.30): 64 hops max, 52 byte packets
7 [AS7922] 96.110.32.173 2.018 ms
8 [AS7922] 96.110.42.134 2.898 ms
10 [AS7922] 96.110.202.110 6.499 ms
11 [AS7922] 96.110.202.146 7.033 ms
12 [AS7922] 50.221.8.2 6.788 ms
13 *
14 [AS21508] 50.219.13.30 12.135 ms
Measurement taken from IPinfo ProbeNet in Ashburn, 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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