ASN Lookup Tool
AS21508 Comcast Cable Communications LLC
An 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.
ASN Lookup for:
AS21508
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ASN
AS21508
Organisation
Comcast Cable Communications LLC
AS Name
COMCAST-21508
IPv4 Addresses Announced
1,183,232
IPv4 Prefixes Announced
161
Bogon Prefixes Announced
0
IPv4 Space Rank
#328 out of 74,594
Registry
ARIN
Registered Country

Registration Date
2001-05-16
Registration Change
2021-01-25
Receiving From
ASN
Organisation