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
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 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
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.
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 6.25ms from Ashburn, US
205.223.19.19 AS21508 Comcast Cable Communications, LLC 5.09ms from Ashburn, US
157.240.147.14 AS21508 Comcast Cable Communications, LLC 11.56ms from Atlanta, US
198.90.112.6 AS21508 Comcast Cable Communications, LLC 3.07ms from Ashburn, US
2001:559:c290:5::941 AS21508 Comcast Cable Communications, LLC 13.34ms from Atlanta, US
50.228.113.1 AS21508 Comcast Cable Communications, LLC 3.76ms from Ashburn, US
50.229.113.2 AS21508 Comcast Cable Communications, LLC 5.81ms from Ashburn, US
157.240.148.1 AS21508 Comcast Cable Communications, LLC 4.53ms from Ashburn, US
50.235.34.2 AS21508 Comcast Cable Communications, LLC 11.73ms from Atlanta, US
50.216.229.247 AS21508 Comcast Cable Communications, LLC 3.00ms from Ashburn, US
50.204.101.75 AS21508 Comcast Cable Communications, LLC 3.65ms from Ashburn, US
50.219.13.30 AS21508 Comcast Cable Communications, LLC 9.66ms from Ashburn, US
50.218.47.1 AS21508 Comcast Cable Communications, LLC 12.54ms from Atlanta, US
50.219.12.41 AS21508 Comcast Cable Communications, LLC 6.78ms from Ashburn, US
50.205.217.1 AS21508 Comcast Cable Communications, LLC 5.02ms from Ashburn, US
50.217.1.1 AS21508 Comcast Cable Communications, LLC 3.51ms from Ashburn, US
50.217.207.4 AS21508 Comcast Cable Communications, LLC 8.18ms from Ashburn, US
173.242.174.1 AS21508 Comcast Cable Communications, LLC 5.13ms 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
94.190.200.164 AS28685 Routit BV 3.18ms from Amsterdam, NL
70.174.51.68 AS22773 Cox Communications Inc. 9.22ms from Ashburn, US
76.20.243.164 AS7922 Comcast Cable Communications, LLC 4.78ms from Atlanta, US
1.38.15.84 AS38266 Vodafone Idea Ltd 3.29ms from Delhi, IN
72.36.10.100 AS30110 Advanced Communications Technology 13.59ms from Denver, US
125.234.55.4 AS7552 Viettel Group 0.69ms from Ho Chi Minh City, VN
18.134.155.116 AS16509 Amazon.com, Inc. 0.55ms from London, GB
86.170.116.116 AS2856 British Telecommunications PLC 2.62ms from London, GB
138.100.86.84 AS766 RedIRIS Autonomous System 0.80ms from Madrid, ES
114.164.199.36 AS4713 NTT DOCOMO BUSINESS,Inc. 11.10ms from Osaka, JP
14.45.83.116 AS4766 Korea Telecom 4.64ms from Seoul, KR
160.251.68.4 AS7506 GMO Internet Group, Inc. 0.44ms from Tokyo, JP
178.235.62.228 AS29314 VECTRA S.A. 4.50ms from Warsaw, PL
122.190.36.100 AS4837 CHINA UNICOM China169 Backbone 2.71ms from Wuhan, CN
37.80.123.148 AS3320 Deutsche Telekom AG 15.14ms from Berlin, DE
91.228.166.148 AS50881 ESET, spol. s r.o. 0.57ms from Bratislava, SK
23.95.115.180 AS36352 HostPapa 0.11ms from Buffalo, US
75.134.189.100 AS20115 Charter Communications LLC 12.89ms from Chicago, US
47.188.6.52 AS5650 Frontier Communications of America, Inc. 0.92ms from Dallas, US
62.146.101.4 AS15598 NorthC Deutschland GmbH 2.84ms from Frankfurt am Main, DE
96.30.166.196 AS11260 EastLink 15.31ms from Fredericton, CA
27.75.162.4 AS7552 Viettel Group 2.53ms from Ho Chi Minh City, VN
70.123.255.180 AS11427 Charter Communications Inc 9.45ms from Houston, US
189.157.228.164 AS8151 UNINET 7.90ms from Monterrey, MX
106.150.24.68 AS2516 KDDI CORPORATION 2.39ms from Osaka, JP

Traceroute

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

$
traceroute -a -n -q1 -f4 157.240.148.17
traceroute to 157.240.148.17 (157.240.148.17): 64 hops max, 52 byte packets
4 [AS3356] 4.68.127.190 104.715 ms
5 [AS7922] 96.110.37.117 107.511 ms
6 *
7 [AS7922] 96.110.203.234 106.739 ms
8 [AS7922] 50.147.17.110 108.482 ms
9 [AS21508] 157.240.148.17 108.488 ms
Measurement taken from IPinfo ProbeNet in Budapest, HU
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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