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
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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
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
50.204.101.12 AS21508 Comcast Cable Communications, LLC 3.79ms from Ashburn, US
2001:559:49b:1f07:dead:beef:123:157 AS21508 Comcast Cable Communications, LLC 6.22ms from Ashburn, US
198.90.112.2 AS21508 Comcast Cable Communications, LLC 3.02ms from Ashburn, US
50.228.113.1 AS21508 Comcast Cable Communications, LLC 3.79ms from Ashburn, US
50.219.13.30 AS21508 Comcast Cable Communications, LLC 9.70ms from Ashburn, US
157.240.148.36 AS21508 Comcast Cable Communications, LLC 4.49ms from Ashburn, US
50.235.34.0 AS21508 Comcast Cable Communications, LLC 11.69ms from Atlanta, US
50.205.217.1 AS21508 Comcast Cable Communications, LLC 5.06ms from Ashburn, US
50.218.47.2 AS21508 Comcast Cable Communications, LLC 12.63ms from Atlanta, US
2001:559:c290:5::946 AS21508 Comcast Cable Communications, LLC 13.32ms from Atlanta, US
50.216.229.251 AS21508 Comcast Cable Communications, LLC 2.97ms from Ashburn, US
157.240.147.33 AS21508 Comcast Cable Communications, LLC 7.35ms from Ashburn, US
50.217.1.1 AS21508 Comcast Cable Communications, LLC 3.44ms from Ashburn, US
50.217.207.4 AS21508 Comcast Cable Communications, LLC 8.24ms from Ashburn, US
50.219.12.43 AS21508 Comcast Cable Communications, LLC 6.67ms from Ashburn, US
50.229.113.2 AS21508 Comcast Cable Communications, LLC 5.79ms from Ashburn, US
205.223.19.47 AS21508 Comcast Cable Communications, LLC 5.06ms 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
206.119.63.100 AS140224 Nebula Global LLC 1.04ms from Hong Kong, HK
45.59.195.244 AS20001 Charter Communications Inc 1.93ms from Los Angeles, US
111.119.241.52 AS136907 HUAWEI CLOUDS 0.62ms from Singapore, SG
197.56.77.228 AS8452 TE-AS 2.46ms from Cairo, EG
117.241.207.68 AS9829 National Internet Backbone 9.56ms from Delhi, IN
62.146.101.4 AS15598 NorthC Deutschland GmbH 2.82ms from Frankfurt am Main, DE
217.182.148.196 AS16276 OVH SAS 0.06ms from Gravelines, FR
41.204.24.164 AS32398 Real Image Internet 16.15ms from Johannesburg, ZA
82.213.236.212 AS15704 XTRA TELECOM S.A. 1.44ms from Madrid, ES
89.95.91.68 AS5410 Bouygues Telecom SA 6.53ms from Marseille, FR
85.166.153.4 AS2119 Telenor Norge AS 1.47ms from Oslo, NO
90.58.3.212 AS3215 Orange S.A. 8.38ms from Paris, FR
34.232.85.52 AS14618 Amazon.com, Inc. 0.18ms from Reston, US
213.119.139.132 AS6848 Telenet BV 9.55ms from Roubaix, FR
58.122.146.212 AS9318 SK Broadband Co Ltd 6.31ms from Seoul, KR
160.251.68.4 AS7506 GMO Internet Group, Inc. 0.46ms from Tokyo, JP
79.100.108.196 AS8866 Vivacom Bulgaria EAD 4.79ms from Varna, BG
81.182.36.244 AS5483 Magyar Telekom Plc. 6.42ms from Budapest, HU
65.240.14.244 AS701 Verizon Business 19.03ms from Chicago, US
40.122.29.52 AS8075 Microsoft Corporation 0.34ms from Des Moines, US
176.122.141.4 AS25820 IT7 Networks Inc 0.30ms from Los Angeles, US
203.41.194.20 AS1221 Telstra Limited 0.99ms from Melbourne, AU
124.168.221.100 AS7545 TPG Telecom Limited 1.72ms from Melbourne, AU
69.141.246.52 AS7922 Comcast Cable Communications, LLC 7.59ms from Morris Plains, US
201.225.60.132 AS11556 Cable & Wireless Panama 1.02ms from Panama, PA

Traceroute

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

$
traceroute -a -n -q1 -f4 -m14 141.104.37.106
traceroute to 141.104.37.106 (141.104.37.106): 14 hops max, 52 byte packets
4 [AS174] 154.54.82.201 2.794 ms
5 [AS174] 154.54.46.178 15.561 ms
6 [AS7922] 50.248.116.165 34.649 ms
7 [AS7922] 96.110.32.205 57.169 ms
8 [AS7922] 96.110.42.134 37.516 ms
9 [AS7922] 96.216.16.5 65.831 ms
10 [AS7922] 68.86.172.250 44.688 ms
11 [AS7922] 96.110.203.22 94.527 ms
12 *
13 *
14 *
Measurement taken from IPinfo ProbeNet in Chicago, 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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