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ASN Lookup Tool
AS257 DNIC-AS-00257

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS257
Organisation
Navy Network Information Center (NNIC)
Name
DNIC-AS-00257
Total IPv4 Addresses
1,004
Total IPv4 Prefixes
11
Total IPv6 Prefixes
5
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#43,465 out of 79,094
Registry
Arin
Registered Country
US flagUS
Registered Country Name
United States of America (the)
Registered Date
1988-12-22
Registration Last Change
2011-07-05
Receiving From

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

ASN
Organisation
AS2152
US flagCENIC
AS2153
US flagCENIC
IPv4 Active Prefixes

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

PrefixRange FromRange To
137.164.24.188/31137.164.24.188137.164.24.189
137.164.50.148/30137.164.50.148137.164.50.151
137.164.50.252/30137.164.50.252137.164.50.255
204.102.228.0/25204.102.228.0204.102.228.127
204.102.228.128/25204.102.228.128204.102.228.255
Showing 5 of 11
IPv6 Active Prefixes
PrefixRange FromRange To
2607:f380:1::108:9a41:8bc0/1232607:f380:1::108:9a41:8bc02607:f380:1::108:9a41:8bdf
2607:f380:1::118:9a43:2940/1222607:f380:1::118:9a43:29402607:f380:1::118:9a43:297f
2607:f380:1::118:9a43:2fc0/1222607:f380:1::118:9a43:2fc02607:f380:1::118:9a43:2fff
2607:f380:1::11c:c66e:6700/1232607:f380:1::11c:c66e:67002607:f380:1::11c:c66e:671f
2607:f380:804::/482607:f380:804::2607:f380:804:ffff:ffff:ffff:ffff:ffff