Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Enterprise allocation +4
- Trust score 69 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Web3 footprint
AS4721 hosts 1 observed decentralized-network node across 1 network. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.
AS4721 — global IP footprint
Cities where AS4721 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS4721 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 182.50.232.0/21 | 4,753 | 2026-07-18 15:25:20 |
| 219.124.224.0/20 | 4,746 | 2026-07-18 15:25:20 |
| 219.124.240.0/20 | 4,708 | 2026-07-18 15:25:20 |
| 180.92.48.0/20 | 4,705 | 2026-07-18 15:25:20 |
| 182.50.208.0/20 | 4,705 | 2026-07-18 15:25:20 |
| 220.208.64.0/19 | 4,702 | 2026-07-18 15:25:20 |
| 223.165.20.0/23 | 4,701 | 2026-07-18 15:25:20 |
| 220.208.96.0/19 | 4,699 | 2026-07-18 15:25:20 |
| 182.50.224.0/21 | 4,695 | 2026-07-18 15:25:20 |
| 218.219.88.0/21 | 4,694 | 2026-07-18 15:25:20 |
| 123.98.224.0/20 | 4,694 | 2026-07-18 15:25:20 |
| 114.198.192.0/20 | 4,691 | 2026-07-18 15:25:20 |
| 202.72.72.0/21 | 4,688 | 2026-07-18 15:25:20 |
| 219.113.96.0/21 | 4,686 | 2026-07-18 15:25:20 |
| 219.112.208.0/20 | 4,686 | 2026-07-18 15:25:20 |
| 219.117.176.0/20 | 4,685 | 2026-07-18 15:25:20 |
| 110.4.56.0/21 | 4,685 | 2026-07-18 15:24:50 |
| 218.219.80.0/21 | 4,684 | 2026-07-18 15:25:20 |
| 175.103.12.0/23 | 4,684 | 2026-07-18 15:25:20 |
| 219.117.8.0/21 | 4,681 | 2026-07-18 15:25:20 |
| 123.98.240.0/20 | 4,681 | 2026-07-18 15:25:20 |
| 203.124.64.0/20 | 4,680 | 2026-07-18 15:25:20 |
| 182.50.192.0/20 | 4,678 | 2026-07-18 15:25:20 |
| 202.72.64.0/21 | 4,678 | 2026-07-18 15:25:20 |
| 180.149.176.0/20 | 4,676 | 2026-07-18 15:25:20 |
| 223.223.212.0/22 | 4,675 | 2026-07-18 15:25:20 |
| 114.134.192.0/19 | 4,675 | 2026-07-18 15:25:20 |
| 203.89.32.0/20 | 4,674 | 2026-07-18 15:25:20 |
| 219.112.192.0/20 | 4,672 | 2026-07-18 15:25:20 |
| 110.232.132.0/22 | 4,672 | 2026-07-18 15:24:50 |
| 110.4.48.0/21 | 4,671 | 2026-07-18 15:24:50 |
| 219.113.104.0/21 | 4,670 | 2026-07-18 15:25:20 |
| 219.117.160.0/20 | 4,669 | 2026-07-18 15:25:20 |
| 175.41.64.0/19 | 4,668 | 2026-07-18 15:25:20 |
| 203.124.80.0/20 | 4,667 | 2026-07-18 15:25:20 |
| 221.132.160.0/19 | 4,666 | 2026-07-18 15:25:20 |
| 223.165.22.0/23 | 4,664 | 2026-07-18 15:25:20 |
| 110.93.4.0/22 | 4,664 | 2026-07-18 15:24:50 |
| 223.223.208.0/22 | 4,662 | 2026-07-18 15:25:20 |
| 219.117.0.0/21 | 4,662 | 2026-07-18 15:25:20 |
| 114.134.224.0/19 | 4,660 | 2026-07-18 15:25:20 |
| 211.19.216.0/21 | 4,659 | 2026-07-18 15:25:20 |
| 114.198.208.0/20 | 4,657 | 2026-07-18 15:25:20 |
| 116.70.160.0/19 | 4,656 | 2026-07-18 15:25:20 |
| 180.92.32.0/20 | 4,654 | 2026-07-18 15:25:20 |
| 203.89.48.0/20 | 4,654 | 2026-07-18 15:25:20 |
| 221.132.128.0/19 | 4,652 | 2026-07-18 15:25:20 |
| 116.70.128.0/19 | 4,650 | 2026-07-18 15:25:20 |
| 175.41.96.0/19 | 4,647 | 2026-07-18 15:25:20 |
| 210.172.248.0/21 | 4,647 | 2026-07-18 15:25:20 |
Showing top 50 of 162 announced prefixes by sample volume.
Frequently Asked Questions
What is AS4721?
AS4721 is an Autonomous System Number assigned to JCOM Co., Ltd.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS4721 announce?
AS4721 announces 631.8K IPv4 addresses distributed across 54 routed CIDR prefixes. The network is registered in Japan.
Who operates AS4721?
AS4721 is operated by JCOM Co., Ltd.. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.
What country is AS4721 registered in?
AS4721 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
