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ASN Lookup Tool
AS5723 JHU

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS5723
Organisation
Johns Hopkins University
Name
JHU
Total IPv4 Addresses
135,680
Total IPv4 Prefixes
11
Total IPv6 Prefixes
1
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#1,458 out of 77,684
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1995-09-06
Registration Last Change
2020-09-08
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
AS6939
US flagHurricane Electric LLC
AS10886
US flagUniversity of Maryland
Transit To

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

 

ASN
Organisation
AS77
US flagJohns Hopkins University Applied Physics Laborat..
IPv4 Active Prefixes

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

Prefix128.220.0.0/16
Range From128.220.0.0
Range To128.220.255.255
Prefix162.129.0.0/16
Range From162.129.0.0
Range To162.129.255.255
Prefix192.12.13.0/24
Range From192.12.13.0
Range To192.12.13.255
Prefix192.12.14.0/24
Range From192.12.14.0
Range To192.12.14.255
Prefix198.57.32.0/22
Range From198.57.32.0
Range To198.57.35.255
Showing 5 of 11
IPv6 Active Prefixes
Prefix2606:2b00::/32
Range From2606:2b00::
Range To2606:2b00: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.