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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
United States Department of Defense (DoD)
Name
DNIC-ASBLK-00721-00726
Total IPv4 Addresses
28,956,672
Total IPv4 Prefixes
5,386
Total IPv6 Prefixes
40
Total IPv4 Bogon Prefixes
1
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#12 out of 78,892
Registry
Arin
Registered Country
US flagUS
Registered Country Name
United States of America (the)
Registered Date
1970-01-01
Registration Last Change
2025-09-12
Receiving From
ASN
Organisation
AS3356
US flagLevel 3 Parent, LLC
AS27064
US flagUnited States Department of Defense (DoD)
AS27066
US flagUnited States Department of Defense (DoD)
Transit To
ASN
Organisation
AS65000
WORLD flagPrivate Use AS
AS27064
US flagUnited States Department of Defense (DoD)
AS64530
WORLD flagPrivate Use AS
AS65530
WORLD flagPrivate Use AS
AS64515
WORLD flagPrivate Use AS
Showing 5 of 24
IPv4 Active Prefixes
PrefixRange FromRange To
6.16.172.0/236.16.172.06.16.173.255
6.16.174.0/246.16.174.06.16.174.255
6.64.181.0/246.64.181.06.64.181.255
55.0.0.0/1655.0.0.055.0.255.255
55.5.0.0/2055.5.0.055.5.15.255
Showing 5 of 5,383
IPv6 Active Prefixes
PrefixRange FromRange To
2608:120::/472608:120::2608:120:1:ffff:ffff:ffff:ffff:ffff
2608:120:3::/482608:120:3::2608:120:3:ffff:ffff:ffff:ffff:ffff
2608:120:5::/482608:120:5::2608:120:5:ffff:ffff:ffff:ffff:ffff
2608:120:6::/472608:120:6::2608:120:7:ffff:ffff:ffff:ffff:ffff
2608:120:8::/462608:120:8::2608:120:b:ffff:ffff:ffff:ffff:ffff
Showing 5 of 40