AS2506
NTT business Solutions corporation
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 →AS2506 — global IP footprint
Cities where AS2506 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 133.41.0.0/16 | 65.5K |
56.4%
|
NTT business Solutions corporation | JP | Hiroshima | Hiroshima |
| 150.19.0.0/16 | 65.5K |
32.0%
|
NTT business Solutions corporation | JP | Hiroshima | Hiroshima |
| 165.242.0.0/16 | 65.5K |
0.6%
|
NTT business Solutions corporation | JP | Hiroshima | Nishihara |
| 202.249.192.0/18 | 16.4K |
10.1%
|
NTT business Solutions corporation | JP | — | — |
| 202.15.112.0/22 | 1.0K |
1.0%
|
NTT business Solutions corporation | JP | — | — |
| 202.245.144.0/24 | 256 |
2.7%
|
NTT business Solutions corporation | JP | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS2506 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 |
|---|---|---|
| 133.41.0.0/16 | 3,986 | 2026-07-24 20:28:23 |
| 150.19.0.0/16 | 3,964 | 2026-07-24 20:28:23 |
| 202.249.236.0/24 | 3,946 | 2026-07-24 20:28:23 |
| 202.245.144.0/24 | 3,940 | 2026-07-24 20:28:23 |
| 165.242.0.0/16 | 3,937 | 2026-07-24 20:28:23 |
| 202.249.224.0/19 | 3,928 | 2026-07-24 20:28:23 |
| 202.249.192.0/19 | 3,927 | 2026-07-24 20:28:23 |
| 202.249.214.0/24 | 3,926 | 2026-07-24 20:28:23 |
| 202.249.204.0/24 | 3,924 | 2026-07-24 20:28:23 |
| 202.249.208.0/24 | 3,919 | 2026-07-24 20:28:23 |
| 202.249.207.0/24 | 3,906 | 2026-07-24 20:28:23 |
| 202.249.206.0/24 | 3,903 | 2026-07-24 20:28:23 |
| 202.15.112.0/22 | 3,787 | 2026-07-24 20:28:05 |
| 202.249.200.0/22 | 3,774 | 2026-07-24 20:28:05 |
| 202.249.237.0/24 | 3,770 | 2026-07-24 20:28:05 |
Frequently Asked Questions
What is AS2506?
AS2506 is an Autonomous System Number assigned to NTT business Solutions 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 AS2506 announce?
AS2506 announces 214.3K IPv4 addresses distributed across 6 routed CIDR prefixes. The network is registered in Japan.
Who operates AS2506?
AS2506 is operated by NTT business Solutions corporation. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.
What country is AS2506 registered in?
AS2506 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
