$ query “AS4713” --type=asn → 1 result(s)

AS4713 · OCN

NTT DOCOMO BUSINESS Inc.

AS4713 is operated by NTT DOCOMO BUSINESS Inc. and serves as a major transit provider, registered in Japan. The system announces a whopping 28.6 million IPv4 addresses (0.77% of routable IPv4 space), including a /10, and supports IPv6. The bulk of its IP address space is in Japan, with additional presence in the United States. This AS has recently updated its prefix announcements.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • Space Overlord — Over 10 million IPv4 addresses
  • #6 in Japan — Top 10 by reach within country

Basic Information

Country
🇯🇵 Japan
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
March 04, 2026
Last Seen
October 21, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
183 / 143
IPv6 Prefixes (raw / aggregated)
5 / 4
IPv4 Addresses
28 624 640
Largest IPv4 Prefix
/10 (4 194 304 addresses)
Largest IPv6 Prefix
/22
Geolocated Countries
🇯🇵 Japan (28 624 384 IPs), 🇺🇸 United States (256 IPs)
Prefix Changed
October 16, 2026

Reputation

Reputation
Good — 32 flagged IPs out of 28 624 640 total (0.00%)
Open Proxies
1 known open proxies in this network

Connectivity Summary

Upstream Providers
2 upstreams providing transit
Peers
20 networks exchanging traffic without transit
Downstream Customers
100 downstreams buying transit
Unclassified
5 unclassified BGP neighbors
Degree
127 unique BGP neighbors
Reach
136 networks in customer cone

Upstream Providers (2)

Prefix Lists

IPv4 Prefixes (183 total)

  • 153.128.0.0/10 (4 194 304 addresses (/10 prefix))
  • 180.0.0.0/10 (4 194 304 addresses (/10 prefix))
  • 114.160.0.0/11 (2 097 152 addresses (/11 prefix))
  • 153.192.0.0/11 (2 097 152 addresses (/11 prefix))
  • 60.32.0.0/12 (1 048 576 addresses (/12 prefix))
  • 114.144.0.0/12 (1 048 576 addresses (/12 prefix))
  • 118.0.0.0/12 (1 048 576 addresses (/12 prefix))
  • 122.16.0.0/12 (1 048 576 addresses (/12 prefix))
  • 153.224.0.0/12 (1 048 576 addresses (/12 prefix))
  • 58.88.0.0/13 (524 288 addresses (/13 prefix))
  • 118.16.0.0/13 (524 288 addresses (/13 prefix))
  • 121.112.0.0/13 (524 288 addresses (/13 prefix))
  • 123.216.0.0/13 (524 288 addresses (/13 prefix))
  • 124.96.0.0/13 (524 288 addresses (/13 prefix))
  • 125.200.0.0/13 (524 288 addresses (/13 prefix))
  • 153.240.0.0/13 (524 288 addresses (/13 prefix))
  • 219.160.0.0/13 (524 288 addresses (/13 prefix))
  • 220.104.0.0/13 (524 288 addresses (/13 prefix))
  • 221.184.0.0/13 (524 288 addresses (/13 prefix))
  • 222.144.0.0/13 (524 288 addresses (/13 prefix))
  • 123.224.0.0/14 (262 144 addresses (/14 prefix))
  • 124.84.0.0/14 (262 144 addresses (/14 prefix))
  • 125.172.0.0/14 (262 144 addresses (/14 prefix))
  • 153.248.0.0/14 (262 144 addresses (/14 prefix))
  • 210.160.0.0/14 (262 144 addresses (/14 prefix))
  • 220.96.0.0/14 (262 144 addresses (/14 prefix))
  • 223.216.0.0/14 (262 144 addresses (/14 prefix))
  • 61.112.0.0/15 (131 072 addresses (/15 prefix))
  • 61.118.0.0/15 (131 072 addresses (/15 prefix))
  • 61.126.0.0/15 (131 072 addresses (/15 prefix))
  • 153.252.0.0/15 (131 072 addresses (/15 prefix))
  • 210.226.0.0/15 (131 072 addresses (/15 prefix))
  • 211.16.0.0/15 (131 072 addresses (/15 prefix))
  • 211.122.0.0/15 (131 072 addresses (/15 prefix))
  • 220.220.0.0/15 (131 072 addresses (/15 prefix))
  • 61.199.0.0/16 (65 536 addresses (/16 prefix))
  • 61.207.0.0/16 (65 536 addresses (/16 prefix))
  • 61.208.0.0/16 (65 536 addresses (/16 prefix))
  • 61.214.0.0/16 (65 536 addresses (/16 prefix))
  • 122.1.0.0/16 (65 536 addresses (/16 prefix))
  • 125.170.0.0/16 (65 536 addresses (/16 prefix))
  • 133.153.0.0/16 (65 536 addresses (/16 prefix))
  • 150.35.0.0/16 (65 536 addresses (/16 prefix))
  • 157.64.0.0/16 (65 536 addresses (/16 prefix))
  • 165.108.0.0/16 (65 536 addresses (/16 prefix))
  • 165.241.0.0/16 (65 536 addresses (/16 prefix))
  • 210.145.0.0/16 (65 536 addresses (/16 prefix))
  • 210.154.0.0/16 (65 536 addresses (/16 prefix))
  • 210.164.0.0/16 (65 536 addresses (/16 prefix))
  • 210.190.0.0/16 (65 536 addresses (/16 prefix))

IPv6 Prefixes (5 total)

  • 2400:4000::/22
  • 2001:380::/32
  • 2400:7800::/32
  • 2407:a800:3e12::/48