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ASN Lookup Tool
AS239 UTORONTO-AS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS239
Organisation
University of Toronto
Name
UTORONTO-AS
Total IPv4 Addresses
331,264
Total IPv4 Prefixes
15
Total IPv6 Prefixes
26
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#791 out of 79,006
Registry
Arin
Registered Country
CA flag CA
Registered Country Name
Canada
Registered Date
1988-09-20
Registration Last Change
2009-07-31
Receiving From

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

ASN
Organisation
AS26677
CA flagORION
IPv4 Active Prefixes

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

Prefix128.100.0.0/16
Range From128.100.0.0
Range To128.100.255.255
Prefix138.51.0.0/17
Range From138.51.0.0
Range To138.51.127.255
Prefix138.51.128.0/18
Range From138.51.128.0
Range To138.51.191.255
Prefix138.51.192.0/19
Range From138.51.192.0
Range To138.51.223.255
Prefix138.51.224.0/20
Range From138.51.224.0
Range To138.51.239.255
Showing 5 of 15
IPv6 Active Prefixes
Prefix2606:fa00::/32
Range From2606:fa00::
Range To2606:fa00:ffff:ffff:ffff:ffff:ffff:ffff
Prefix2631:1000::/31
Range From2631:1000::
Range To2631:1001:ffff:ffff:ffff:ffff:ffff:ffff
Prefix2631:1002::/43
Range From2631:1002::
Range To2631:1002:1f:ffff:ffff:ffff:ffff:ffff
Prefix2631:1002:20::/47
Range From2631:1002:20::
Range To2631:1002:21:ffff:ffff:ffff:ffff:ffff
Prefix2631:1002:22::/48
Range From2631:1002:22::
Range To2631:1002:22:ffff:ffff:ffff:ffff:ffff
Showing 5 of 26