AS Number
AS21508
AS Name
COMCAST-21508
Org Name
Comcast Cable Communications, LLC
Registry

arin

RegDate

2001-09-18

Updated

2020-11-18

AS21508 Looking Glass
IPv4Prefixes

29

IPv6Prefixes

91

IPv4 NUMs

74,240

IPv6 NUMs(/64)

5,963,776

74,240 IPv4 Addresses
CIDR Description IP Num
50.204.101.0/24
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 256
50.205.217.0/24
IRR InValid
Comcast Cable Communications, LLC 256
50.216.229.0/24
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 256
50.217.1.0/24
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 256
50.217.207.0/24
IRR InValid
Comcast Cable Communications, LLC 256
50.218.47.0/24
IRR InValid
Comcast Cable Communications, LLC 256
50.219.12.0/22
IRR InValid
Comcast Cable Communications, LLC 1024
50.219.193.0/24
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 256
50.220.111.0/24
IRR InValid
Comcast Cable Communications, LLC 256
50.227.24.0/24
IRR InValid
Comcast Cable Communications, LLC 256
50.228.113.0/24
IRR InValid
Comcast Cable Communications, LLC 256
50.229.95.0/24
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 256
50.229.113.0/24
IRR InValid
Comcast Cable Communications, LLC 256
50.229.114.0/24
IRR InValid
Comcast Cable Communications, LLC 256
50.229.232.0/24
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 256
50.229.233.0/24
IRR InValid
Comcast Cable Communications, LLC 256
50.234.62.0/23
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 512
50.235.34.0/24
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 256
50.237.96.0/24
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 256
76.78.84.0/24
IRR InValid
Apogee Telecom Inc. 256
141.104.0.0/24
IRR InValid
Virginia Department of Education 256
141.104.0.0/16
IRR InValid
Virginia Department of Education 65536
157.240.147.0/24
IRR Valid
Facebook, Inc. 256
157.240.148.0/24
IRR Valid
Facebook, Inc. 256
173.242.174.0/24
County of Henrico 256
192.100.76.0/24
IRR InValid
Westlab Consulting 256
198.90.112.0/22
IRR InValid
WhiteSky Communications, LLC. 1024
204.194.47.0/24
IRR InValid
Va. Dept. of Rehabilitative Services 256
205.223.19.0/24
IRR InValid
Virginia State Lottery Department 256
CIDR Description IP NUMs(prefix /64)
2001:559:8a::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c0::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:f7::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:19f::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:220::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:243::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:280::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:37d::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:39d::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:3ac::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:3b9::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:40a::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:42b::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:43b::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:49a::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:49b::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:4b6::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:53c::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:543::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:54c::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:54d::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:5bb::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:5c9::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:5da::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:5db::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:720::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:73c::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:740::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:76b::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:788::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:78a::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:79d::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:79e::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:7a7::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:7db::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:7e8::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:804c::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:8060::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:810d::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:81bf::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:81d7::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:81d8::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:8201::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:822a::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:824b::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:825e::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:82b7::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:833e::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:834e::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:8358::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:8416::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:841c::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:8445::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:84a7::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:8535::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:85c1::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:85ff::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:8604::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:871a::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:875f::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:8773::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:87b2::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:87e8::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c071::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c0f6::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c0f7::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c0fa::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c10a::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c174::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c18b::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c1a5::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c1ca::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c28f::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c290::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c2a5::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c2a7::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c2ae::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c344::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c391::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c3cf::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c3e9::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c45f::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c460::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c495::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c49d::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c4c8::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c4c9::/48
ROA Signed and Valid IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c4db::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c4f6::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c515::/48
IRR InValid
Comcast Cable Communications, LLC 65536
2001:559:c538::/48
ROA Signed and Valid IRR InValid
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 71,386,368 36,318,243,520,512 IPv4 IPv4 IPv6 IPv6
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS14583 VITA-VSP-1 - Virginia Information Technologies Agency (VITA), US United States 1,024 0 IPv4 IPv4
AS18478 NATAL-MED - Mednax Services, Inc., US United States 1,280 0 IPv4 IPv4
AS23209 VHDA20011260123220 - Virginia Housing Development Authority, US United States 512 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 3,840 805,306,368 IPv4 IPv4
AS396017 COMCAST-MES - Comcast Cable Communications, LLC, US United States 256 0 IPv4 IPv4
AS397039 WORLDSTRIDES, US United States 256 0 IPv4 IPv4
AS2134 GSVNET-AS - Santander Global Technology, S.L.U, ES Spain 99,328 0 IPv4 IPv4
AS15173 NEWMA-11 - Newmarket Corporation, US United States 65,792 0 IPv4 IPv4
AS40288 CFCU-AS - CONGRESSIONAL FEDERAL CREDIT UNION, US United States 512 0 IPv4 IPv4
AS394058 TELOSC-ASH - Telos Corporation, US United States 512 0 IPv4 IPv4
AS395441 EDGECONNEX-ASN - EdgeConneX, INC, US United States 512 0 IPv4 IPv4
AS395772 AHC-AS - Augusta Health Care, Inc, US United States 768 0 IPv4 IPv4
AS8360 Allianz Technology SE, DE Germany 3,328 0 IPv4 IPv4
AS395444 MERIT-RICHMOND - Merit Medical Systems, Inc, US United States 256 0 IPv4 IPv4
AS27336 SENTARA-HEALTH-CARE - Sentara Healthcare, US United States 65,536 0 IPv4 IPv4
AS46847 NEXVORTEX, US United States 3,840 0 IPv4 IPv4
AS395527 VSU-NET - Virginia State University, US United States 65,536 0 IPv4 IPv4
AS396452 LOUDOUN-WATER - Loudoun Water, US United States 256 0 IPv4 IPv4
AS19923 SHENANDOAH-UNIV - Shenandoah University, US United States 2,048 0 IPv4 IPv4
AS13335 CLOUDFLARENET - Cloudflare, Inc., US United States 1,643,776 8,954,249,216 IPv4 IPv4 IPv6 IPv6
AS21863 INTELIVANT-CONSULTING - intelivant consulting, llc, US United States 256 0 IPv4 IPv4
AS40400 EDC-MIDDLETOWN - Middletown Data Center, US United States 1,024 0 IPv4 IPv4
AS54219 SCHAWK-INC - Matthews International Corporation, US United States 256 0 IPv4 IPv4
AS54883 CORVA - City of Richmond, Virginia, US United States 512 0 IPv4 IPv4
AS63468 INFINITTNA - Infinitt North America, Inc., US United States 512 0 IPv4 IPv4
AS398475 DRILLINGINFO-VIRGINIA - Drilling Info Inc., US United States 2,048 0 IPv4 IPv4
AS11679 STIHL-204-124-67 - Stihl Inc., US United States 512 0 IPv4 IPv4
AS33296 PIEDMONT-BROADBAND - Piedmont Broadband, Inc, US United States 512 0 IPv4 IPv4
AS40485 SSB - SANDY SPRING BANK, US United States 512 0 IPv4 IPv4
AS53410 VA-DATACENTER - APPLIED SYSTEMS, INC, US United States 512 0 IPv4 IPv4
AS62971 COUNTY-OF-CHESTERFIELD-VA - County of Chesterfield, US United States 256 0 IPv4 IPv4
AS393613 VACU-ASN-1 - Virginia Credit Union, Inc., US United States 1,024 0 IPv4 IPv4
AS395481 SUNET - i SW, LLC, US United States 1,024 0 IPv4 IPv4
AS395505 IMANAGE - iManage, LLC, US United States 2,304 0 IPv4 IPv4
AS32540 HP-HOOD - HP Hood, US United States 768 0 IPv4 IPv4
AS27326 VHSA-AS - VCU HEALTH SYSTEM AUTHORITY, US United States 1,792 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
AS54391 CRUTCHFIELD - Crutchfield New Media LLC, US United States 512 131,072 IPv4 IPv4 IPv6 IPv6
AS393591 GAMEWOODTECHNOLOGYGROUP - Gamewood Technology Group, Inc., US United States 2,560 0 IPv4 IPv4
AS396083 ARVUS-160-84 - AREVA Inc., US United States 512 0 IPv4 IPv4
AS19709 HX-ISP-CHO - Helix Computer Systems, Inc., US United States 2,048 0 IPv4 IPv4
AS36179 VITA-DEM-1 - Virginia Information Technologies Agency (VITA), US United States 512 0 IPv4 IPv4
AS40323 VAFB - Virginia Farm Bureau Mutual Insurance Company, US United States 256 0 IPv4 IPv4
AS393861 INOVA-PRIMARYASN-01 - Inova Health System Foundation, US United States 3,072 0 IPv4 IPv4
AS399099 PCPS-ASN - petersburg city public schools, US United States 256 0 IPv4 IPv4
AS399232 SETON-HOME - Seton Home Study School, US United States 256 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


OrgTechHandle: IC161-ARIN
OrgTechName:   Comcast Cable Communications Inc
OrgTechPhone:  +1-555-555-5555 
OrgTechEmail:  CNIPEO-Ip-registration@cable.comcast.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IC161-ARIN

OrgRoutingHandle: ROUTI25-ARIN
OrgRoutingName:   Routing
OrgRoutingPhone:  +1-555-555-5555 
OrgRoutingEmail:  routing@comcast.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ROUTI25-ARIN

OrgAbuseHandle: NAPO-ARIN
OrgAbuseName:   Network Abuse and Policy Observance
OrgAbusePhone:  +1-888-565-4329 
OrgAbuseEmail:  abuse@comcast.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NAPO-ARIN