$ query “AS17511” --type=asn → 1 result(s)

AS17511 — OPTAGE

OPTAGE Inc.

AS17511 is a mid-size transit provider operated by OPTAGE Inc., registered in Japan. The network announces an impressive 3.0 million IPv4 addresses, including a /13. Supports IPv6.

  • Top 5% — Top 5% of all autonomous systems by reach and degree

Basic Information

Country
🇯🇵 Japan
Category
Internet Service Provider
Network Role
Mid-size Transit
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)
66 / 58
IPv6 Prefixes (raw / aggregated)
1 / 1
IPv4 Addresses
2 994 688
Largest IPv4 Prefix
/13 (524 288 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇯🇵 JP (88 IPs), 🇦🇺 AU (1 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Good — 8 flagged IPs out of 2 994 688 total (0.00%)

Connectivity Summary

Upstream Providers
4 upstream autonomous systems providing transit
Peers
38 autonomous systems exchanging traffic without transit fees
Downstream Customers
10 downstream autonomous systems buying transit
Degree
53 unique BGP neighbors (providers + customers + peers)
Reach
10 — customer cone size measuring network influence
Degree Rank
#2 829
Reach Rank
#3 140

Upstream Providers (4)

Prefix Lists

IPv4 Prefixes (66 total)

  • 121.80.0.0/13 (524 288 addresses)
  • 58.188.0.0/14 (262 144 addresses)
  • 101.140.0.0/14 (262 144 addresses)
  • 112.68.0.0/14 (262 144 addresses)
  • 119.228.0.0/14 (262 144 addresses)
  • 180.144.0.0/14 (262 144 addresses)
  • 182.164.0.0/14 (262 144 addresses)
  • 60.56.0.0/15 (131 072 addresses)
  • 58.70.0.0/16 (65 536 addresses)
  • 59.190.0.0/16 (65 536 addresses)
  • 128.22.0.0/16 (65 536 addresses)
  • 128.27.0.0/16 (65 536 addresses)
  • 150.57.0.0/16 (65 536 addresses)
  • 150.66.0.0/16 (65 536 addresses)
  • 158.198.0.0/16 (65 536 addresses)
  • 160.233.0.0/16 (65 536 addresses)
  • 218.228.128.0/17 (32 768 addresses)
  • 218.251.0.0/17 (32 768 addresses)
  • 219.75.128.0/17 (32 768 addresses)
  • 219.122.128.0/17 (32 768 addresses)
  • 218.42.192.0/18 (16 384 addresses)
  • 61.195.96.0/19 (8 192 addresses)
  • 61.205.96.0/19 (8 192 addresses)
  • 203.140.64.0/19 (8 192 addresses)
  • 219.122.32.0/19 (8 192 addresses)
  • 61.122.240.0/20 (4 096 addresses)
  • 61.205.0.0/20 (4 096 addresses)
  • 61.205.80.0/20 (4 096 addresses)
  • 61.213.128.0/20 (4 096 addresses)
  • 202.8.48.0/20 (4 096 addresses)
  • 202.60.32.0/20 (4 096 addresses)
  • 202.216.48.0/20 (4 096 addresses)
  • 203.175.80.0/20 (4 096 addresses)
  • 210.199.80.0/20 (4 096 addresses)
  • 218.45.96.0/20 (4 096 addresses)
  • 103.97.232.0/21 (2 048 addresses)
  • 122.100.24.0/21 (2 048 addresses)
  • 192.51.144.0/21 (2 048 addresses)
  • 103.65.208.0/22 (1 024 addresses)
  • 103.84.124.0/22 (1 024 addresses)
  • 103.99.124.0/22 (1 024 addresses)
  • 103.112.180.0/22 (1 024 addresses)
  • 103.116.152.0/22 (1 024 addresses)
  • 103.124.200.0/22 (1 024 addresses)
  • 103.199.132.0/22 (1 024 addresses)
  • 138.248.64.0/22 (1 024 addresses)
  • 202.26.228.0/22 (1 024 addresses)
  • 202.223.48.0/22 (1 024 addresses)
  • 219.100.52.0/22 (1 024 addresses)
  • 103.142.132.0/23 (512 addresses)

IPv6 Prefixes (1 total)

  • 2001:ce8::/32