AS2511

Name: AS2511 — Nippon Telegraph and Telephone Corporation
Creator: ipdex

Nippon Telegraph and Telephone Corporation Unknown registered in Japan

5IPv4 prefixes

0IPv6 prefixes

100%RPKI-valid

#13,408AS Rank

327/327RIS visibility

#414Rank in Japan

2002-04-05Allocated

Nippon Telegraph and Telephone Corporation (AS2511) — Unknown, registered in Japan. announces 5 IPv4 prefixes + 0 IPv6 prefixes. Rank in Japan: #414. Allocated: 2002-04-05.

IPv4 5IPv6 0

Announced prefixes · 5

v4 163.138.0.0/17 valid
v4 163.138.128.0/19 valid
v4 192.26.94.0/24 valid
v4 192.47.167.0/24 valid
v4 192.5.216.0/24 valid

RPKI: rpki.cloudflare.com · 2026-06-17

Routing: 5 IPv4 · 0 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	5
2026-06-13	5

AS topology · Customer cone 1

Providers · 1

AS173 Nippon Telegraph and Telephone Corporation

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