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

20

IPv6Prefixes

74

IPv4 NUMs

71,680

IPv6 NUMs(/64)

550,299,303,936

71,680 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
50.217.1.0/24 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
50.219.12.0/22 Comcast Cable Communications, LLC 1024
50.227.24.0/24 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
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
198.90.112.0/22 WhiteSky Communications, 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)
2001:558:180::/44 Comcast Cable Communications, LLC 1048576
2001:558:230::/44 Comcast Cable Communications, LLC 1048576
2001:558:701a::/48 Comcast Cable Communications, LLC 65536
2001:558:fe30::/48 Comcast Cable Communications, LLC 65536
2001:559:8a::/48 Comcast Cable Communications, LLC 65536
2001:559:c0::/48 Comcast Cable Communications, LLC 65536
2001:559:f7::/48 Comcast Cable Communications, LLC 65536
2001:559:220::/48 Comcast Cable Communications, LLC 65536
2001:559:243::/48 Comcast Cable Communications, LLC 65536
2001:559:280::/48 Comcast Cable Communications, LLC 65536
2001:559:37d::/48 Comcast Cable Communications, LLC 65536
2001:559:3ac::/48 Comcast Cable Communications, LLC 65536
2001:559:3b9::/48 Comcast Cable Communications, LLC 65536
2001:559:3c8::/48 Comcast Cable Communications, LLC 65536
2001:559:40a::/48 Comcast Cable Communications, LLC 65536
2001:559:49a::/48 Comcast Cable Communications, LLC 65536
2001:559:49b::/48 Comcast Cable Communications, LLC 65536
2001:559:53c::/48 Comcast Cable Communications, LLC 65536
2001:559:5c9::/48 Comcast Cable Communications, LLC 65536
2001:559:5db::/48 Comcast Cable Communications, LLC 65536
2001:559:720::/48 Comcast Cable Communications, LLC 65536
2001:559:72b::/48 Comcast Cable Communications, LLC 65536
2001:559:73c::/48 Comcast Cable Communications, LLC 65536
2001:559:788::/48 Comcast Cable Communications, LLC 65536
2001:559:78a::/48 Comcast Cable Communications, LLC 65536
2001:559:79d::/48 Comcast Cable Communications, LLC 65536
2001:559:79e::/48 Comcast Cable Communications, LLC 65536
2001:559:7a7::/48 Comcast Cable Communications, LLC 65536
2001:559:7db::/48 Comcast Cable Communications, LLC 65536
2001:559:804c::/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
2001:559:82fd::/48 Comcast Cable Communications, LLC 65536
2001:559:833e::/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
2001:559:8604::/48 Comcast Cable Communications, LLC 65536
2001:559:871a::/48 Comcast Cable Communications, LLC 65536
2001:559:875f::/48 Comcast Cable Communications, LLC 65536
2001:559:8773::/48 Comcast Cable Communications, LLC 65536
2001:559:87b2::/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:c1a5::/48 Comcast Cable Communications, LLC 65536
2001:559:c1ca::/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:c2a7::/48 Comcast Cable Communications, LLC 65536
2001:559:c344::/48 Comcast Cable Communications, LLC 65536
2001:559:c3e9::/48 Comcast Cable Communications, LLC 65536
2001:559:c458::/48 Comcast Cable Communications, LLC 65536
2001:559:c45f::/48 Comcast Cable Communications, LLC 65536
2001:559:c460::/48 Comcast Cable Communications, LLC 65536
2001:559:c495::/48 Comcast Cable Communications, LLC 65536
2001:559:c4c8::/48 Comcast Cable Communications, LLC 65536
2001:559:c4c9::/48 Comcast Cable Communications, LLC 65536
2001:559:c4db::/48 Comcast Cable Communications, LLC 65536
2001:559:c4f6::/48 Comcast Cable Communications, LLC 65536
2001:559:c515::/48 Comcast Cable Communications, LLC 65536
2001:559:c538::/48 Comcast Cable Communications, LLC 65536
2001:55c:6000::/35 Comcast Cable Communications, LLC 536870912
2601:5c0::/26 Comcast Cable Communications, LLC 274877906944
2603:25c0::/26 Comcast Cable Communications, LLC 274877906944
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS7922 COMCAST-7922 - Comcast Cable Communications, LLC, US United States 68,025,856 36,318,243,520,512 IPv6 IPv6
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS394276 TAF - TurnAround Factor, Inc., US United States 0 131,072 IPv6 IPv6
AS397190 WSP-DIGITAL - WSP, US United States 256 65,536 IPv6 IPv6
AS13335 CLOUDFLARENET - Cloudflare, Inc., US United States 1,752,320 44,046,024,704 IPv6 IPv6
AS40641 MGWTEL - MGW Telephone Company, Inc., US United States 5,376 4,294,967,296 IPv6 IPv6
AS54391 CRUTCHFIELD - Crutchfield New Media LLC, US United States 512 131,072 IPv6 IPv6
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:  +1-856-792-2300 
OrgRoutingEmail:  [email protected]
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ROUTI25-ARIN

OrgTechHandle: IC161-ARIN
OrgTechName:   Comcast Cable Communications Inc
OrgTechPhone:  +1-856-792-2300 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/IC161-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