$ query “AS9999” --type=asn → 1 result(s)

AS9999 — ATTOKYO

AT TOKYO Corporation

AS9999 is a residential access provider run by AT TOKYO Corporation, registered in Japan. The network announces a respectable 20 224 IPv4 addresses. Supports IPv6.

Basic Information

Country
🇯🇵 Japan
Category
Internet Service Provider
Network Role
Access Provider
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)
10 / 10
IPv6 Prefixes (raw / aggregated)
1 / 1
IPv4 Addresses
20 224
Largest IPv4 Prefix
/20 (4 096 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇯🇵 JP (16 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Pristine — 0 flagged IPs out of 20 224 total (0.00%)

Connectivity Summary

Upstream Providers
1 upstream autonomous systems providing transit
Peers
0 autonomous systems exchanging traffic without transit fees
Downstream Customers
1 downstream autonomous systems buying transit
Degree
2 unique BGP neighbors (providers + customers + peers)
Reach
5 — customer cone size measuring network influence
Degree Rank
#30 139
Reach Rank
#4 272

Upstream Providers (1)

Prefix Lists

IPv4 Prefixes (10 total)

  • 165.100.192.0/20 (4 096 addresses)
  • 211.132.0.0/20 (4 096 addresses)
  • 219.99.128.0/20 (4 096 addresses)
  • 119.59.64.0/21 (2 048 addresses)
  • 203.223.24.0/21 (2 048 addresses)
  • 110.44.20.0/22 (1 024 addresses)
  • 202.13.124.0/22 (1 024 addresses)
  • 203.89.128.0/22 (1 024 addresses)
  • 203.80.6.0/23 (512 addresses)
  • 202.243.223.0/24 (256 addresses)

IPv6 Prefixes (1 total)

  • 2405:1800::/32