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ASN Lookup Tool
AS4221 DNIC-ASBLK-04214-04221

Powered By:
ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS4221
Organisation
DoD Network Information Center
Name
DNIC-ASBLK-04214-04221
Total IPv4 Addresses
0
Total IPv4 Prefixes
0
Total IPv6 Prefixes
2
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
NA
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1995-01-09
Registration Last Change
2009-05-13
Receiving From

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

ASN
Organisation
AS668
US flagDoD Network Information Center
IPv6 Active Prefixes
Prefix2001:480:52::/48
Range From2001:480:52::
Range To2001:480:52:ffff:ffff:ffff:ffff:ffff
Prefix2001:480:95::/48
Range From2001:480:95::
Range To2001:480:95: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.