$ query “AS2511” --type=asn → 1 result(s)
AS2511 — CORE
Nippon Telegraph and Telephone Corporation
AS2511 is a stub network registered to Nippon Telegraph and Telephone Corporation, based in Japan. The network announces a respectable 41 728 IPv4 addresses. No IPv6 support — it's 2026, just saying.
Basic Information
- Country
- 🇯🇵 Japan
- Category
- Internet Service Provider
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 5 / 5
- IPv6 Prefixes (raw / aggregated)
- 0 / 0
- IPv4 Addresses
- 41 728
- Largest IPv4 Prefix
- /17 (32 768 addresses)
- Geolocated Countries
- 🇯🇵 JP (7 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 41 728 total (0.00%)
Connectivity Summary
- Upstream Providers
- 1 upstream autonomous systems providing transit
- Peers
- 0 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 0 downstream autonomous systems buying transit
- Degree
- 1 unique BGP neighbors (providers + customers + peers)
- Reach
- 0 — customer cone size measuring network influence
- Degree Rank
- #53 004
Upstream Providers (1)
- AS173 — NTTECL-AS
Prefix Lists
IPv4 Prefixes (5 total)
- 163.138.0.0/17 (32 768 addresses)
- 163.138.128.0/19 (8 192 addresses)
- 192.5.216.0/24 (256 addresses)
- 192.26.94.0/24 (256 addresses)
- 192.47.167.0/24 (256 addresses)