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
- Isp allocation +5
- Trust score 70 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 2 internet exchanges: JPNAP Tokyo: Peering, JPIX TOKYO
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 163.135.0.0/16 | 65.5K |
0.4%
|
NTT DATA CORPORATION | JP | Tokyo | Arakawa |
| 203.182.0.0/16 | 65.5K |
1.8%
|
NTT DATA CORPORATION | JP | — | — |
| 210.144.0.0/16 | 65.5K |
0.4%
|
NTT DATA CORPORATION | JP | — | — |
| 202.217.0.0/17 | 32.8K |
0.9%
|
NTT DATA CORPORATION | JP | — | — |
| 202.235.64.0/19 | 8.2K |
3.0%
|
NTT DATA CORPORATION | JP | — | — |
| 202.235.96.0/20 | 4.1K |
0.0%
|
NTT DATA CORPORATION | JP | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS4673 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 |
|---|---|---|
| 163.135.0.0/16 | 9,503 | 2026-09-11 17:19:29 |
| 202.235.96.0/20 | 9,404 | 2026-09-11 17:19:29 |
| 202.217.0.0/17 | 9,337 | 2026-09-11 17:19:29 |
| 203.182.0.0/16 | 9,245 | 2026-09-11 17:19:29 |
| 210.144.0.0/16 | 9,202 | 2026-09-11 17:19:29 |
| 202.235.64.0/19 | 9,192 | 2026-09-11 17:19:29 |
| 210.144.86.0/24 | 8,625 | 2026-09-11 17:19:38 |
| 210.144.87.0/24 | 8,591 | 2026-09-11 17:19:38 |
| 210.144.95.0/24 | 8,538 | 2026-09-11 17:19:38 |
| 210.144.84.0/24 | 8,533 | 2026-09-11 17:19:38 |
| 210.144.21.0/24 | 8,533 | 2026-09-11 17:19:38 |
| 210.144.11.0/24 | 8,527 | 2026-09-11 17:19:38 |
| 203.182.234.0/24 | 8,494 | 2026-09-11 17:19:38 |
| 210.144.109.0/24 | 8,490 | 2026-09-11 17:19:38 |
| 210.144.73.0/24 | 8,484 | 2026-09-11 17:19:38 |
| 210.144.93.0/24 | 8,463 | 2026-09-11 17:19:38 |
| 203.182.224.0/20 | 6,671 | 2026-09-11 17:19:42 |
| 203.182.247.0/24 | 6,668 | 2026-09-11 17:19:42 |
| 210.144.64.0/24 | 6,581 | 2026-09-11 17:19:41 |
| 202.235.70.0/23 | 6,544 | 2026-09-11 17:19:28 |
| 202.235.72.0/23 | 6,509 | 2026-09-11 17:19:28 |
| 202.217.75.0/24 | 6,473 | 2026-09-11 17:19:41 |
| 203.182.17.0/24 | 6,450 | 2026-09-11 17:19:28 |
| 202.217.72.0/24 | 6,450 | 2026-09-11 17:19:41 |
| 202.217.73.0/24 | 6,435 | 2026-09-11 17:19:41 |
| 202.217.74.0/24 | 4,843 | 2026-07-27 02:04:12 |
Frequently Asked Questions
What is AS4673?
AS4673 is an Autonomous System Number assigned to NTT DATA CORPORATION. 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 AS4673 announce?
AS4673 announces 241.7K IPv4 addresses distributed across 6 routed CIDR prefixes. The network is registered in Japan.
Who operates AS4673?
AS4673 is operated by NTT DATA CORPORATION. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.
What country is AS4673 registered in?
AS4673 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
