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ASN Lookup Tool
AS33657 CMCS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS33657
Organisation
Comcast Cable Communications, LLC
Name
CMCS
Total IPv4 Addresses
1,506,560
Total IPv4 Prefixes
187
Total IPv6 Prefixes
261
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#268 out of 79,015
Registry
Arin
Registered Country
US flagUS
Registered Country Name
United States of America (the)
Registered Date
2005-02-16
Registration Last Change
2021-01-25
Receiving From
ASN
Organisation
AS7922
US flagComcast Cable Communications, LLC
AS3356
US flagLevel 3 Parent, LLC
Transit To
ASN
Organisation
AS401533
US flagTGS, LLC
AS174
US flagCogent Communications, LLC
AS11131
US flagUniversity of Maryland Baltimore County (UMBC)
AS2384
US flagArchitect of the Capitol
AS784
US flagHenry M. Jackson Foundation for The Advancement ..
Showing 5 of 136
IPv4 Active Prefixes
PrefixRange FromRange To
23.24.96.0/1923.24.96.023.24.127.255
23.25.188.0/2223.25.188.023.25.191.255
23.30.0.0/1923.30.0.023.30.31.255
23.31.192.0/1923.31.192.023.31.223.255
24.124.152.0/2324.124.152.024.124.153.255
Showing 5 of 187
IPv6 Active Prefixes
PrefixRange FromRange To
2001:558:2f0::/442001:558:2f0::2001:558:2ff:ffff:ffff:ffff:ffff:ffff
2001:558:340::/442001:558:340::2001:558:34f:ffff:ffff:ffff:ffff:ffff
2001:558:fe06::/472001:558:fe06::2001:558:fe07:ffff:ffff:ffff:ffff:ffff
2001:559:b::/482001:559:b::2001:559:b:ffff:ffff:ffff:ffff:ffff
2001:559:48::/482001:559:48::2001:559:48:ffff:ffff:ffff:ffff:ffff
Showing 5 of 261