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ASN Lookup Tool
AS33667 CMCS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS33667
Organisation
Comcast Cable Communications, LLC
Name
CMCS
Total IPv4 Addresses
1866100
Total IPv4 Prefixes
200
Total IPv6 Prefixes
85
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#230 out of 76,372
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
AS3356
US flagLevel 3 Parent, LLC
AS7922
US flagComcast Cable Communications, LLC
Transit To

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

 

ASN
Organisation
AS20940
NL flagAkamai International B.V.
AS13335
US flagCloudflare, Inc.
AS6099
US flagAlameda County Office of Education
AS18880
US flagLam Research Corporation
AS14706
US flagMonterey Bay Aquarium Research Institute
Showing 5 of 156
IPv4 Active Prefixes

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

Prefix23.30.32.0/20
Range From23.30.32.0
Range To23.30.47.255
Prefix24.2.32.0/19
Range From24.2.32.0
Range To24.2.63.255
Prefix24.7.128.0/18
Range From24.7.128.0
Range To24.7.191.255
Prefix24.10.0.0/17
Range From24.10.0.0
Range To24.10.127.255
Prefix24.23.0.0/18
Range From24.23.0.0
Range To24.23.63.255
Showing 5 of 200
IPv6 Active Prefixes
Prefix2001:558:1a0::/44
Range From2001:558:1a0::
Range To2001:558:1af:ffff:ffff:ffff:ffff:ffff
Prefix2001:558:210::/44
Range From2001:558:210::
Range To2001:558:21f:ffff:ffff:ffff:ffff:ffff
Prefix2001:558:5020::/48
Range From2001:558:5020::
Range To2001:558:5020:ffff:ffff:ffff:ffff:ffff
Prefix2001:558:6012::/48
Range From2001:558:6012::
Range To2001:558:6012:ffff:ffff:ffff:ffff:ffff
Prefix2001:558:6037::/48
Range From2001:558:6037::
Range To2001:558:6037:ffff:ffff:ffff:ffff:ffff
Showing 5 of 85
Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.