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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
29,128,704
Total IPv4 Prefixes
5,372
Total IPv6 Prefixes
40
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#12 out of 78,220
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
AS3356
US flagLevel 3 Parent, LLC
AS27064
US flagDoD Network Information Center
AS27066
US flagDoD Network Information Center
Transit To

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

 

ASN
Organisation
AS668
US flagDoD Network Information Center
AS65000
WORLD flagPrivate Use AS
AS27064
US flagDoD Network Information Center
AS64515
WORLD flagPrivate Use AS
AS65530
WORLD flagPrivate Use AS
Showing 5 of 23
IPv4 Active Prefixes

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

Prefix6.16.172.0/23
Range From6.16.172.0
Range To6.16.173.255
Prefix6.16.174.0/24
Range From6.16.174.0
Range To6.16.174.255
Prefix6.64.181.0/24
Range From6.64.181.0
Range To6.64.181.255
Prefix55.0.0.0/16
Range From55.0.0.0
Range To55.0.255.255
Prefix55.4.0.0/15
Range From55.4.0.0
Range To55.5.255.255
Showing 5 of 5,372
IPv6 Active Prefixes
Prefix2608:120::/47
Range From2608:120::
Range To2608:120:1:ffff:ffff:ffff:ffff:ffff
Prefix2608:120:3::/48
Range From2608:120:3::
Range To2608:120:3:ffff:ffff:ffff:ffff:ffff
Prefix2608:120:5::/48
Range From2608:120:5::
Range To2608:120:5:ffff:ffff:ffff:ffff:ffff
Prefix2608:120:6::/47
Range From2608:120:6::
Range To2608:120:7:ffff:ffff:ffff:ffff:ffff
Prefix2608:120:8::/46
Range From2608:120:8::
Range To2608:120:b:ffff:ffff:ffff:ffff:ffff
Showing 5 of 40
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.