AS Name
COMCAST-21508
Org Name
Comcast Cable Communications, LLC
AS21508 Looking Glass
IPv4Prefixes

26

IPv6Prefixes

73

IPv4 NUMs

73,728

IPv6 NUMs(/64)

4,784,128

73,728 IPv4 Addresses
CIDR Description IP Num
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
50.218.47.0/24 Comcast Cable Communications, LLC 256
50.219.12.0/22 Comcast Cable Communications, LLC 1024
50.220.111.0/24 Comcast Cable Communications, LLC 256
50.225.179.0/24 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
50.229.95.0/24 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
50.232.58.0/23 Comcast Cable Communications, LLC 512
50.234.62.0/23 Comcast Cable Communications, LLC 512
50.235.34.0/24 Comcast Cable Communications, LLC 256
50.237.96.0/24 Comcast Cable Communications, LLC 256
76.78.84.0/24 Apogee Telecom Inc. 256
141.104.0.0/24 Virginia Department of Education 256
141.104.0.0/16 Virginia Department of Education 65536
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
192.100.76.0/24 Westlab Consulting 256
198.90.112.0/22 Boingo MDU LLC 1024
204.194.47.0/24 Va. Dept. of Rehabilitative Services 256
205.223.19.0/24 Virginia State Lottery Department 256
CIDR Description IP NUMs(prefix /64)
2001:559:34::/48 Comcast Cable Communications, LLC 65536
2001:559:49::/48 Comcast Cable Communications, LLC 65536
2001:559:8a::/48 Comcast Cable Communications, LLC 65536
2001:559:f7::/48 Comcast Cable Communications, LLC 65536
2001:559:19f::/48 Comcast Cable Communications, LLC 65536
2001:559:243::/48 Comcast Cable Communications, LLC 65536
2001:559:280::/48 Comcast Cable Communications, LLC 65536
2001:559:39d::/48 Comcast Cable Communications, LLC 65536
2001:559:3ac::/48 Comcast Cable Communications, LLC 65536
2001:559:40a::/48 Comcast Cable Communications, LLC 65536
2001:559:42b::/48 Comcast Cable Communications, LLC 65536
2001:559:43b::/48 Comcast Cable Communications, LLC 65536
2001:559:49a::/48 Comcast Cable Communications, LLC 65536
2001:559:49b::/48 Comcast Cable Communications, LLC 65536
2001:559:4b6::/48 Comcast Cable Communications, LLC 65536
2001:559:53c::/48 Comcast Cable Communications, LLC 65536
2001:559:543::/48 Comcast Cable Communications, LLC 65536
2001:559:54c::/48 Comcast Cable Communications, LLC 65536
2001:559:54d::/48 Comcast Cable Communications, LLC 65536
2001:559:5bb::/48 Comcast Cable Communications, LLC 65536
2001:559:5da::/48 Comcast Cable Communications, LLC 65536
2001:559:5db::/48 Comcast Cable Communications, LLC 65536
2001:559:720::/48 Comcast Cable Communications, LLC 65536
2001:559:73c::/48 Comcast Cable Communications, LLC 65536
2001:559:740::/48 Comcast Cable Communications, LLC 65536
2001:559:76b::/48 Comcast Cable Communications, LLC 65536
2001:559:788::/48 Comcast Cable Communications, LLC 65536
2001:559:79d::/48 Comcast Cable Communications, LLC 65536
2001:559:79e::/48 Comcast Cable Communications, LLC 65536
2001:559:79f::/48 Comcast Cable Communications, LLC 65536
2001:559:7a7::/48 Comcast Cable Communications, LLC 65536
2001:559:804c::/48 Comcast Cable Communications, LLC 65536
2001:559:8060::/48 Comcast Cable Communications, LLC 65536
2001:559:810d::/48 Comcast Cable Communications, LLC 65536
2001:559:81bf::/48 Comcast Cable Communications, LLC 65536
2001:559:81d7::/48 Comcast Cable Communications, LLC 65536
2001:559:81d8::/48 Comcast Cable Communications, LLC 65536
2001:559:8201::/48 Comcast Cable Communications, LLC 65536
2001:559:822a::/48 Comcast Cable Communications, LLC 65536
2001:559:824b::/48 Comcast Cable Communications, LLC 65536
2001:559:825e::/48 Comcast Cable Communications, LLC 65536
2001:559:82b7::/48 Comcast Cable Communications, LLC 65536
2001:559:833e::/48 Comcast Cable Communications, LLC 65536
2001:559:834e::/48 Comcast Cable Communications, LLC 65536
2001:559:8358::/48 Comcast Cable Communications, LLC 65536
2001:559:8416::/48 Comcast Cable Communications, LLC 65536
2001:559:841c::/48 Comcast Cable Communications, LLC 65536
2001:559:8445::/48 Comcast Cable Communications, LLC 65536
2001:559:84a7::/48 Comcast Cable Communications, LLC 65536
2001:559:8535::/48 Comcast Cable Communications, LLC 65536
2001:559:85c1::/48 Comcast Cable Communications, LLC 65536
2001:559:85ff::/48 Comcast Cable Communications, LLC 65536
2001:559:871a::/48 Comcast Cable Communications, LLC 65536
2001:559:c071::/48 Comcast Cable Communications, LLC 65536
2001:559:c0f6::/48 Comcast Cable Communications, LLC 65536
2001:559:c0f7::/48 Comcast Cable Communications, LLC 65536
2001:559:c0fa::/48 Comcast Cable Communications, LLC 65536
2001:559:c10a::/48 Comcast Cable Communications, LLC 65536
2001:559:c174::/48 Comcast Cable Communications, LLC 65536
2001:559:c18b::/48 Comcast Cable Communications, LLC 65536
2001:559:c1a5::/48 Comcast Cable Communications, LLC 65536
2001:559:c1ca::/48 Comcast Cable Communications, LLC 65536
2001:559:c227::/48 Comcast Cable Communications, LLC 65536
2001:559:c28f::/48 Comcast Cable Communications, LLC 65536
2001:559:c290::/48 Comcast Cable Communications, LLC 65536
2001:559:c2a5::/48 Comcast Cable Communications, LLC 65536
2001:559:c2a7::/48 Comcast Cable Communications, LLC 65536
2001:559:c2ae::/48 Comcast Cable Communications, LLC 65536
2001:559:c344::/48 Comcast Cable Communications, LLC 65536
2001:559:c391::/48 Comcast Cable Communications, LLC 65536
2001:559:c3cf::/48 Comcast Cable Communications, LLC 65536
2001:559:c3de::/48 Comcast Cable Communications, LLC 65536
2001:559:c3e9::/48 Comcast Cable Communications, LLC 65536
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS7922 COMCAST-7922 - Comcast Cable Communications, LLC, US United States 71,482,112 36,318,243,586,048 IPv4 IPv4 IPv6 IPv6
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS11679 STIHL-204-124-67 - Stihl Inc., US United States 512 0 IPv4 IPv4
AS17283 SAFRAPAY-US-01 - Safrapay Inc, US United States 512 0 IPv4 IPv4
AS21863 INTELIVANT-CONSULTING - intelivant consulting, llc, US United States 256 0 IPv4 IPv4
AS54883 CORVA - City of Richmond, Virginia, US United States 512 0 IPv4 IPv4
AS393613 VACU-ASN-1 - Virginia Credit Union, Inc., US United States 512 0 IPv4 IPv4
AS394058 TELOSC-ASH - Telos Corporation, US United States 512 0 IPv4 IPv4
AS2134 GSVNET-AS - Santander Global Technology, S.L.U, ES Spain 98,560 0 IPv4 IPv4
AS8360 Allianz Technology SE, DE Germany 2,560 0 IPv4 IPv4
AS396017 COMCAST-D - Comcast Cable Communications, LLC, US United States 256 0 IPv4 IPv4
AS399232 SETON-HOME - Seton Home Study School, US United States 256 0 IPv4 IPv4
AS396083 ARVUS-160-84 - AREVA Inc., US United States 512 0 IPv4 IPv4
AS32540 HP-HOOD - HP Hood, US United States 768 0 IPv4 IPv4
AS54219 SCHAWK-INC - Matthews International Corporation, US United States 256 0 IPv4 IPv4
AS27326 VHSA-AS - VCU HEALTH SYSTEM AUTHORITY, US United States 1,792 0 IPv4 IPv4
AS40485 SSB - SANDY SPRING BANK, US United States 512 0 IPv4 IPv4
AS395527 VSU-NET - Virginia State University, US United States 65,536 0 IPv4 IPv4
AS13335 CLOUDFLARENET - Cloudflare, Inc., US United States 1,590,016 336,658,432 IPv4 IPv4 IPv6 IPv6
AS14583 VITA-VSP-1 - Virginia Information Technologies Agency (VITA), US United States 1,024 0 IPv4 IPv4
AS40323 VAFB - Virginia Farm Bureau Mutual Insurance Company, US United States 256 0 IPv4 IPv4
AS397039 WORLDSTRIDES, US United States 256 0 IPv4 IPv4
AS18478 NATAL-MED - Mednax Services, Inc., US United States 1,024 0 IPv4 IPv4
AS40288 CFCU-AS - CONGRESSIONAL FEDERAL CREDIT UNION, US United States 512 0 IPv4 IPv4
AS19923 SHENANDOAH-UNIV - Shenandoah University, US United States 2,048 0 IPv4 IPv4
AS27336 SENTARA-HEALTH-CARE - Sentara Healthcare, US United States 65,536 0 IPv4 IPv4
AS395441 EDGECONNEX-ASN - EdgeConneX, INC, US United States 256 0 IPv4 IPv4
AS395505 IMANAGE - iManage, LLC, US United States 2,304 0 IPv4 IPv4
AS395772 AHC-AS - Augusta Health Care, Inc, US United States 768 0 IPv4 IPv4
AS13713 ARCOT - Arcot Systems, US United States 2,560 0 IPv4 IPv4
AS15173 NEWMA-11 - Newmarket Corporation, US United States 65,792 0 IPv4 IPv4
AS399099 PCPS-ASN - petersburg city public schools, US United States 256 0 IPv4 IPv4
AS23209 VHDA20011260123220 - Virginia Housing Development Authority, US United States 512 0 IPv4 IPv4
AS36179 VITA-DEM-1 - Virginia Information Technologies Agency (VITA), US United States 512 0 IPv4 IPv4
AS46847 NEXVORTEX, US United States 4,096 0 IPv4 IPv4
AS54391 CRUTCHFIELD - Crutchfield New Media LLC, US United States 512 131,072 IPv4 IPv4 IPv6 IPv6
AS62971 COUNTY-OF-CHESTERFIELD-VA - County of Chesterfield, US United States 256 0 IPv4 IPv4
AS36244 SVEC - Shenandoah Valley Electric Cooperative, US United States 512 0 IPv4 IPv4
AS46643 VIRGINIA-COLLEGE-SAVINGS-PLAN - Virginia College Savings Plan, US United States 256 0 IPv4 IPv4
AS36364 MHSNET - Mary Washington Hospital, Inc., US United States 768 0 IPv4 IPv4
AS40641 MGWTEL - MGW Telephone Company, Inc., US United States 5,120 805,306,368 IPv4 IPv4
AS53410 VA-DATACENTER - APPLIED SYSTEMS, INC, US United States 512 0 IPv4 IPv4
AS63468 INFINITTNA - Infinitt North America, Inc., US United States 512 0 IPv4 IPv4
AS395444 MERIT-RICHMOND - Merit Medical Systems, Inc, US United States 256 0 IPv4 IPv4
AS19709 HX-ISP-CHO - Helix Computer Systems, Inc., US United States 2,048 0 IPv4 IPv4
AS30299 THE-MARTIN-AGENCY-HQ - THE MARTIN AGENCY, US United States 256 0 IPv4 IPv4
IP Address Domain NUMs Domains
50.204.101.53 1 ofx.mydccu.org
50.204.101.60 1 hb.mydccu.org
50.204.101.61 1 mydccu.org
50.204.101.62 1 mb.mydccu.org
ASNumber:       21508
ASName:         COMCAST-21508
ASHandle:       AS21508
RegDate:        2001-05-16
Updated:        2021-01-25    
Ref:            https://rdap.arin.net/registry/autnum/21508



OrgName:        Comcast Cable Communications, LLC
OrgId:          CCCS
Address:        1800 Bishops Gate Blvd
City:           Mt Laurel
StateProv:      NJ
PostalCode:     08054
Country:        US
RegDate:        2001-09-18
Updated:        2020-11-18
Ref:            https://rdap.arin.net/registry/entity/CCCS


OrgRoutingHandle: ROUTI25-ARIN
OrgRoutingName:   Routing
OrgRoutingPhone:  +1-856-317-7200 
OrgRoutingEmail:  [email protected]
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ROUTI25-ARIN

OrgAbuseHandle: NAPO-ARIN
OrgAbuseName:   Network Abuse and Policy Observance
OrgAbusePhone:  +1-888-565-4329 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NAPO-ARIN

OrgTechHandle: IC161-ARIN
OrgTechName:   Comcast Cable Communications Inc
OrgTechPhone:  +1-856-317-7200 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/IC161-ARIN