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ASN Lookup Tool
AS101 WASH-NSF-AS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS101
Organisation
University of Washington
Name
WASH-NSF-AS
Total IPv4 Addresses
12,800
Total IPv4 Prefixes
16
Total IPv6 Prefixes
5
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#8,173 out of 77,684
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1987-03-31
Registration Last Change
2021-10-02
Receiving From

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

ASN
Organisation
AS3356
US flagLevel 3 Parent, LLC
AS174
US flagCogent Communications
AS852
CA flagTELUS Communications Inc.
AS2497
JP flagInternet Initiative Japan Inc.
AS9299
PH flagPhilippine Long Distance Telephone Co.
Showing 5 of 32
Transit To

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

 

ASN
Organisation
AS151673
CN flagChen Xinyu
AS4216200021
WORLD flagPrivate Use AS
AS4216200001
WORLD flagPrivate Use AS
AS4204000820
WORLD flagPrivate Use AS
AS4200000007
WORLD flagPrivate Use AS
Showing 5 of 246
IPv4 Active Prefixes

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

Prefix83.142.136.0/21
Range From83.142.136.0
Range To83.142.143.255
Prefix193.218.148.0/22
Range From193.218.148.0
Range To193.218.151.255
Prefix194.54.16.0/22
Range From194.54.16.0
Range To194.54.19.255
Prefix195.206.112.0/22
Range From195.206.112.0
Range To195.206.115.255
Prefix207.231.240.0/24
Range From207.231.240.0
Range To207.231.240.255
Showing 5 of 16
IPv6 Active Prefixes
Prefix2001:504:b::/48
Range From2001:504:b::
Range To2001:504:b:ffff:ffff:ffff:ffff:ffff
Prefix2001:1860::/34
Range From2001:1860::
Range To2001:1860:3fff:ffff:ffff:ffff:ffff:ffff
Prefix2001:1860:4000::/34
Range From2001:1860:4000::
Range To2001:1860:7fff:ffff:ffff:ffff:ffff:ffff
Prefix2001:1860:8000::/34
Range From2001:1860:8000::
Range To2001:1860:bfff:ffff:ffff:ffff:ffff:ffff
Prefix2001:1860:c000::/34
Range From2001:1860:c000::
Range To2001:1860:ffff:ffff:ffff:ffff:ffff:ffff
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.