AS257

Name: AS257 — Navy Network Information Center (NNIC)
Creator: ipdex

Navy Network Information Center (NNIC) Unknown registered in United States

5IPv4 prefixes

1IPv6 prefixes

#12,794AS Rank

327/327RIS visibility

#4,646Rank in United States

1988-12-22Allocated

Navy Network Information Center (NNIC) (AS257) — Unknown, registered in United States. announces 5 IPv4 prefixes + 1 IPv6 prefixes. Rank in United States: #4646. Allocated: 1988-12-22.

IPv4 5IPv6 1

Announced prefixes · 6

v4 204.102.228.0/25 unknown
v4 204.102.228.128/25 unknown
v4 204.102.229.0/24 unknown
v4 205.155.65.0/24 unknown
v4 209.129.248.0/25 unknown
v6 2607:f380:804::/48 unknown

Routing: 2 IPv4 · 1 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	6
2026-06-13	6

AS topology · Customer cone 1

Providers · 2

AS2152 CENIC
AS2153 CENIC

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