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
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Countries served by 21Vianet.Co.,Ltd
Every country where this organization has IPv4 allocations, ranked by IPs held.
Largest CIDR ranges
| CIDR | IPs | PTR Density | ASN | Country | State | City |
|---|---|---|---|---|---|---|
| 120.133.240.0/20 | 4.1K |
0.0%
|
AS17428 | CN | — | — |
| 120.132.224.0/21 | 2.0K |
0.0%
|
AS17428 | CN | — | — |
| 103.253.204.0/22 | 1.0K |
0.1%
|
AS17428 | CN | — | — |
| 211.148.20.0/22 | 1.0K |
0.0%
|
AS17428 | CN | — | — |
| 211.148.18.0/23 | 512 |
0.6%
|
AS17428 | CN | — | — |
| 211.148.24.0/23 | 512 |
0.4%
|
AS17428 | CN | — | — |
| 211.148.30.0/23 | 512 |
0.0%
|
AS17428 | CN | — | — |
| 182.175.127.0/24 | 256 |
0.0%
|
AS17428 | CN | — | — |
| 211.148.17.0/24 | 256 |
0.0%
|
AS17428 | CN | — | — |
| 211.148.27.0/24 | 256 |
0.0%
|
AS17428 | CN | — | — |
Frequently Asked Questions
How many IP addresses does 21Vianet.Co.,Ltd own?
21Vianet.Co.,Ltd controls 10.5K IPv4 addresses distributed across 10 CIDR ranges. The organization is registered in China.
What ASNs does 21Vianet.Co.,Ltd operate?
21Vianet.Co.,Ltd operates 1 Autonomous System. Each ASN represents an independently routed network that 21Vianet.Co.,Ltd manages for internet traffic delivery.
What type of organization is 21Vianet.Co.,Ltd?
21Vianet.Co.,Ltd is categorized as unknown. This classification is based on the organization's primary use of its IP address allocations.
