BigDataCloud Logo

ASN Lookup Tool
AS21508 COMCAST-21508

Powered By:
ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS21508
Organisation
Comcast Cable Communications, LLC
Name
COMCAST-21508
Total IPv4 Addresses
674,304
Total IPv4 Prefixes
144
Total IPv6 Prefixes
76
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#489 out of 79,016
Registry
Arin
Registered Country
US flagUS
Registered Country Name
United States of America (the)
Registered Date
2001-05-16
Registration Last Change
2021-01-25
Receiving From
ASN
Organisation
AS7922
US flagComcast Cable Communications, LLC
Transit To
ASN
Organisation
AS394276
US flagTurnAround Factor, Inc.
AS13335
US flagCloudflare, Inc.
AS10794
US flagBank of America, National Association
AS2134
ES flagSantander Global Technology, S.L.U
AS15173
US flagNewmarket Corporation
Showing 5 of 45
IPv4 Active Prefixes
PrefixRange FromRange To
23.25.96.0/1923.25.96.023.25.127.255
23.25.186.0/2323.25.186.023.25.187.255
23.31.96.0/2023.31.96.023.31.111.255
24.124.151.0/2424.124.151.024.124.151.255
24.124.162.0/2324.124.162.024.124.163.255
Showing 5 of 144
IPv6 Active Prefixes
PrefixRange FromRange To
2001:558:180::/442001:558:180::2001:558:18f:ffff:ffff:ffff:ffff:ffff
2001:558:230::/442001:558:230::2001:558:23f:ffff:ffff:ffff:ffff:ffff
2001:558:701a::/482001:558:701a::2001:558:701a:ffff:ffff:ffff:ffff:ffff
2001:558:fe30::/482001:558:fe30::2001:558:fe30:ffff:ffff:ffff:ffff:ffff
2001:559:8a::/482001:559:8a::2001:559:8a:ffff:ffff:ffff:ffff:ffff
Showing 5 of 76