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 →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 163.137.128.0/19 | 8.2K |
0.0%
|
NTT COMWARE CORPORATION | JP | — | — |
| 163.137.200.0/21 | 2.0K |
1.7%
|
NTT COMWARE CORPORATION | JP | — | — |
| 163.137.232.0/21 | 2.0K |
0.7%
|
NTT COMWARE CORPORATION | JP | — | — |
| 163.137.212.0/22 | 1.0K |
1.0%
|
NTT COMWARE CORPORATION | JP | — | — |
| 163.137.216.0/22 | 1.0K |
0.5%
|
NTT COMWARE CORPORATION | JP | — | — |
| 163.137.224.0/22 | 1.0K |
0.8%
|
NTT COMWARE CORPORATION | JP | — | — |
| 132.222.192.0/23 | 512 |
1.6%
|
NTT COMWARE CORPORATION | JP | — | — |
| 163.137.194.0/23 | 512 |
10.0%
|
NTT COMWARE CORPORATION | JP | — | — |
| 163.137.196.0/23 | 512 |
7.2%
|
NTT COMWARE CORPORATION | JP | — | — |
| 163.137.208.0/23 | 512 |
0.0%
|
NTT COMWARE CORPORATION | JP | — | — |
| 163.137.220.0/23 | 512 |
0.4%
|
NTT COMWARE CORPORATION | JP | — | — |
| 163.137.230.0/23 | 512 |
0.0%
|
NTT COMWARE CORPORATION | JP | — | — |
| 132.222.121.0/24 | 256 |
0.4%
|
NTT COMWARE CORPORATION | JP | — | — |
| 132.222.160.0/24 | 256 |
0.0%
|
NTT COMWARE CORPORATION | JP | — | — |
| 132.222.224.0/24 | 256 |
0.0%
|
NTT COMWARE CORPORATION | JP | — | — |
| 163.137.188.0/24 | 256 |
0.0%
|
NTT COMWARE CORPORATION | JP | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS17516 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 |
|---|---|---|
| 163.137.220.0/23 | 4,820 | 2026-07-30 01:05:49 |
| 163.137.218.0/23 | 4,783 | 2026-07-30 01:05:49 |
| 163.137.226.0/23 | 4,763 | 2026-07-30 01:05:49 |
| 163.137.224.0/23 | 4,694 | 2026-07-30 01:05:49 |
| 163.137.188.0/24 | 4,687 | 2026-07-30 01:05:49 |
| 163.137.212.0/23 | 4,647 | 2026-07-30 01:05:49 |
| 132.222.193.0/24 | 4,636 | 2026-07-30 01:05:49 |
| 132.222.121.0/24 | 4,621 | 2026-07-30 01:05:49 |
| 163.137.216.0/23 | 4,614 | 2026-07-30 01:05:49 |
| 132.222.224.0/24 | 4,611 | 2026-07-30 01:05:49 |
| 163.137.204.0/22 | 4,609 | 2026-07-30 01:05:49 |
| 163.137.214.0/23 | 4,605 | 2026-07-30 01:05:49 |
| 163.137.202.0/23 | 4,601 | 2026-07-30 01:05:49 |
| 163.137.230.0/23 | 4,597 | 2026-07-30 01:05:49 |
| 132.222.192.0/24 | 4,594 | 2026-07-30 01:05:49 |
| 132.222.160.0/24 | 4,591 | 2026-07-30 01:05:49 |
| 163.137.194.0/23 | 4,588 | 2026-07-30 01:05:49 |
| 163.137.208.0/23 | 4,582 | 2026-07-30 01:05:49 |
| 163.137.196.0/23 | 4,580 | 2026-07-30 01:05:49 |
| 163.137.200.0/23 | 4,580 | 2026-07-30 01:05:49 |
| 163.137.128.0/19 | 4,575 | 2026-07-30 01:05:49 |
| 163.137.232.0/21 | 4,563 | 2026-07-30 01:05:49 |
Frequently Asked Questions
What is AS17516?
AS17516 is an Autonomous System Number assigned to NTT COMWARE 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 AS17516 announce?
AS17516 announces 19.5K IPv4 addresses distributed across 16 routed CIDR prefixes. The network is registered in Japan.
Who operates AS17516?
AS17516 is operated by NTT COMWARE CORPORATION. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.
What country is AS17516 registered in?
AS17516 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
