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ASN Lookup Tool
AS9 CMU-ROUTER

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS9
Organisation
Carnegie Mellon University
Name
CMU-ROUTER
Total IPv4 Addresses
133,888
Total IPv4 Prefixes
9
Total IPv6 Prefixes
16
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#1,480 out of 77,693
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1984-04-17
Registration Last Change
2012-04-02
Receiving From

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

ASN
Organisation
AS2152
US flagCENIC
AS9498
IN flagBharti Airtel Limited
AS4755
IN flagTata Communications Limited
AS6461
US flagZayo Bandwidth
AS46887
US flagCrown Castle Fiber LLC
Showing 5 of 8
IPv4 Active Prefixes

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

Prefix103.187.179.0/24
Range From103.187.179.0
Range To103.187.179.255
Prefix128.2.0.0/16
Range From128.2.0.0
Range To128.2.255.255
Prefix128.237.0.0/16
Range From128.237.0.0
Range To128.237.255.255
Prefix192.5.146.0/24
Range From192.5.146.0
Range To192.5.146.255
Prefix192.12.32.0/24
Range From192.12.32.0
Range To192.12.32.255
Showing 5 of 9
IPv6 Active Prefixes
Prefix2607:fb28::/44
Range From2607:fb28::
Range To2607:fb28:f:ffff:ffff:ffff:ffff:ffff
Prefix2607:fb28:11::/48
Range From2607:fb28:11::
Range To2607:fb28:11:ffff:ffff:ffff:ffff:ffff
Prefix2607:fb28:12::/47
Range From2607:fb28:12::
Range To2607:fb28:13:ffff:ffff:ffff:ffff:ffff
Prefix2607:fb28:14::/46
Range From2607:fb28:14::
Range To2607:fb28:17:ffff:ffff:ffff:ffff:ffff
Prefix2607:fb28:18::/45
Range From2607:fb28:18::
Range To2607:fb28:1f:ffff:ffff:ffff:ffff:ffff
Showing 5 of 16
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.