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
18,432
Total IPv4 Prefixes
40
Total IPv6 Prefixes
327
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#6,625 out of 77,986
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
US flagComcast Cable Communications, LLC
US flagLevel 3 Parent, LLC
US flagCenturyLink Communications, LLC
Transit To

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

 

ASN
Organisation
US flagCogent Communications
US flagIPXO LLC
US flagYale University
US flagUniversity of Maryland Baltimore County (UMBC)
US flagJohns Hopkins University Applied Physics Laborat..
Showing 5 of 131
IPv4 Active Prefixes

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

Showing 5 of 40
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.