ASN Lookup Tool
AS721 DNIC-ASBLK-00721-00726

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS721
Organisation
DoD Network Information Center
Name
DNIC-ASBLK-00721-00726
Total IPv4 Addresses
30830592
Total IPv4 Prefixes
5634
Total IPv6 Prefixes
18
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#11 out of 77,343
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1970-01-01
Registration Last Change
2009-05-15
Receiving From

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

ASN
Organisation
US flagCenturyLink Communications, LLC
US flagDoD Network Information Center
US flagCenturyLink Communications, LLC
US flagCenturyLink Communications, LLC
Transit To

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

 

ASN
Organisation
US flagDoD Network Information Center
WORLD flagPrivate Use AS
US flagDoD Network Information Center
WORLD flagPrivate Use AS
WORLD flagPrivate Use AS
Showing 5 of 17
IPv4 Active Prefixes

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

Range From6.16.172.0
Range To6.16.173.255
Range From6.16.174.0
Range To6.16.174.255
Range From6.42.236.0
Range To6.42.239.255
Range From6.42.240.0
Range To6.42.241.255
Range From6.42.242.0
Range To6.42.242.255
Showing 5 of 5634
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.