Summary

Country
US United States
Organization Navy Network Information Center (nnic)
Domain mail.mil
Number of IPv4 960
Number of IPv6 1.2089× 1024
AS Type Government
Registry ARIN
Allocated December 22, 1988 (about 36 years ago)
Updated July 05, 2011 (about 13 years ago)

IP Ranges

AS257 announces 6 IPv4 ranges and 1 IPv6 range.

That's a total of 960 IPv4 addresses and 1.2089× 1024 IPv6 addresses.

Prefix Organization Size Registry Status
204.102.228.0/25
US Naval Postgraduate School
128 ARIN REASSIGNMENT
204.102.228.128/25
US Naval Postgraduate School
128 ARIN REASSIGNMENT
204.102.229.0/24
US Naval Postgraduate School
256 ARIN REASSIGNMENT
205.155.65.0/24
US CENIC
256 ARIN ALLOCATION
209.129.248.0/25
US CENIC
128 ARIN ALLOCATION
209.129.248.192/26
US CENIC
64 ARIN ALLOCATION
Prefix Organization Size Registry Status
2607:f380:804::/48
US CENIC
1.2089× 1024 ARIN ALLOCATION

Peers

There is no peer for AS257.

Upstreams

There are 2 upstreams for AS257:

Downstreams

There is no downstream for AS257.

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