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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
1,507,325
Total IPv4 Prefixes
185
Total IPv6 Prefixes
274
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#263 out of 79,006
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
2005-02-16
Registration Last Change
2021-01-25
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
AS7922
US flagComcast Cable Communications, LLC
AS3356
US flagLevel 3 Parent, LLC
Transit To

The list of active Autonomous Systems (ASs) which receive traffic from that ASN.

 

ASN
Organisation
AS401533
US flagTGS, LLC
AS174
US flagCogent Communications
AS29
US flagYale University
AS11131
US flagUniversity of Maryland Baltimore County (UMBC)
AS2384
US flagArchitect of the Capitol
Showing 5 of 136
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

Prefix23.24.96.0/19
Range From23.24.96.0
Range To23.24.127.255
Prefix23.25.188.0/22
Range From23.25.188.0
Range To23.25.191.255
Prefix23.30.0.0/19
Range From23.30.0.0
Range To23.30.31.255
Prefix23.31.192.0/19
Range From23.31.192.0
Range To23.31.223.255
Prefix24.124.152.0/23
Range From24.124.152.0
Range To24.124.153.255
Showing 5 of 185
IPv6 Active Prefixes
Prefix2001:558:2f0::/44
Range From2001:558:2f0::
Range To2001:558:2ff:ffff:ffff:ffff:ffff:ffff
Prefix2001:558:340::/44
Range From2001:558:340::
Range To2001:558:34f:ffff:ffff:ffff:ffff:ffff
Prefix2001:558:fe06::/47
Range From2001:558:fe06::
Range To2001:558:fe07:ffff:ffff:ffff:ffff:ffff
Prefix2001:559:b::/48
Range From2001:559:b::
Range To2001:559:b:ffff:ffff:ffff:ffff:ffff
Prefix2001:559:48::/48
Range From2001:559:48::
Range To2001:559:48:ffff:ffff:ffff:ffff:ffff
Showing 5 of 274